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# Output of well-known algorithms for the Subset sum problem
According to Wikipedia:
In computer science, the subset sum problem is an important problem in complexity theory and cryptography. The problem is this: given a set (or multiset) of integers, is there a non-empty subset whose sum is zero? For example, given ... | HuggingFaceTB/finemath | |
# Infinitely differentiable vs. continuously differentiable vs. analytic?
Hello. I am confused about a point in complex analysis. In my book Complex Analysis by Gamelin, the definition for an analytic function is given as :
a function f(z) is analytic on the open set U if f(z) is (complex) differentiable at each poin... | HuggingFaceTB/finemath | |
Home » Posts tagged 'average'
# Tag Archives: average
## Why Do We Learn Average?
We learn different Mathematics concepts in Primary school. For Primary students, do you expect them to understand why they are learning average? Or percentage? Yes, they do not understand the reasons behind and when they face difficult... | HuggingFaceTB/finemath | |
# How can you determine the power function’s degree? ## How can you determine the power function’s degree?
To find the degree of the power functions in the table, you will need to determine the difference between the y-values. (Values of ) until the diferences are constant.
## What are examples of power functions?
H... | HuggingFaceTB/finemath | |
display | more...
AFAIK there is no real official name for these types of recurrence relations which are similar to the recursive definition of the Fibonacci numbers.
That is:
F(n) = F(n-1) + F(n-2)
where F(0) = 0 F(1) = 1
These are a particularly difficult class of recurrence relations to solve. By solving, I mean w... | HuggingFaceTB/finemath | |
## 11.2 Decoherence and interference
Suppose the qubit undergoes the usual interference experiment, but, in between the two Hadamard gates, it is affected by decoherence (denoted by \times), which acts as described above (i.e. |0\rangle|e\rangle\mapsto|0\rangle|e_{00}\rangle and |1\rangle|e\rangle\mapsto|1\rangle|e_{1... | open-web-math/open-web-math | |
## Non-Common Core
### Strategies for Addition & Subtraction Unit
#### Strategies for Addition & Subtraction Unit
The Strategies for Addition and Subtraction Unit involves understanding the processes of addition and subtraction in order to solve problems and answer questions such as—
• If we know all of the parts, ... | HuggingFaceTB/finemath | |
# How to calculate the complex Fourier coefficients and its partial sum?
Using complex exponentials (without FourierTrigSeries):
\begin{align*} f(x) &= \sum\limits_{ - \infty}^{ + \infty} {{c_n}{e^{2 \cdot \pi \cdot i \cdot n \cdot t/T}} = } \sum\limits_{ - \infty}^{ + \infty} {{c_n}{e^{i \cdot n \cdot w \cdot t}}} \... | HuggingFaceTB/finemath | |
Consider the continuous piece-wise linear function $f:\mathbb{R}\rightarrow\mathbb{R}$, with slope $f'(x)=-1$ or $f'(x)=+1$ according whether $\lfloor x/\sqrt 2\rfloor=0\ \mathrm{ mod} 3$, or not (like this). So $f(x)=x/3+O(1)$ as $|x|\to\infty$ and it is therefore surjective; precisely, any of its fiber has three poin... | HuggingFaceTB/finemath | |
# Difference between revisions of "1998 AIME Problems/Problem 14"
## Problem
An $m\times n\times p$ rectangular box has half the volume of an $(m + 2)\times(n + 2)\times(p + 2)$ rectangular box, where $m, n,$ and $p$ are integers, and $m\le n\le p.$ What is the largest possible value of $p$?
## Solution
$2mnp = (m+... | HuggingFaceTB/finemath | |
# Women
In an company of 1050 employees are 2/3 women. How many women work in the company?
Correct result:
n = 700
#### Solution:
We would be pleased if you find an error in the word problem, spelling mistakes, or inaccuracies and send it to us. Thank you!
Tips to related online calculators
Need help calculate s... | HuggingFaceTB/finemath | |
Hands On Fraction Activities
January 4, 2017
Fractions in the first grade classroom can be a CHALLENGE for sure, but I like to use a lot of hands on manipulatives and real life situations for students to see the parts and the whole of each fraction.
While CCSS only requires first graders to identify 1/2 and 1/4 of sh... | HuggingFaceTB/finemath | |
# Two digit number, when added together the answer is one half of the answer you get when digits are multiplied together?
0 votes
165 views
Find a two-digit number so that when the digits are added together the answer is one half of the answer you get when the 2 digits are multiplied together.
posted Jul 6, 2018
Sha... | HuggingFaceTB/finemath | |
Examples of OO thinking and not OO thinking
Not OO thinking is not necessarily bad. However, an example below does serve a useful purpose - as an example from the real world.
Example (McKillip)
A variety of concrete materials are used to help children understand numbers larger than 10. The pictures of ones, tens, an... | HuggingFaceTB/finemath | |
Geometry/algebra 1
posted by .
Use the given area A of the rectangle to find the value of x. Then give the dimensions of the rectangle.
A=91m^2
A=L•W
L=(2x+3)m
W=(x+2)m
91m^2=(2x+3)m•(x+2)m
91=(x+2)(2x+3)
Now what?
• Geometry/algebra 1 -
Set the equation equal to 0:
2x^2 + 4x + 3x + 6 - 91 = 0
2x^2 + 7x - 85 = 0
... | HuggingFaceTB/finemath | |
# Questions And Answers
## 4 Responses
1. Smw says:
A value is increased by 342% to 331.5.
What is the original value?
As you told me the value increased by 342% to 331.5.
342%= 331.5
We must find 100% and it is = X
100% = X
The formula for this calculation is:
X=(100×331.5)/342
X=96.9
So the original value is 96.... | HuggingFaceTB/finemath | |
Question Video: Finding a Root of a Quadratic Equation given the Other Root | Nagwa Question Video: Finding a Root of a Quadratic Equation given the Other Root | Nagwa
# Question Video: Finding a Root of a Quadratic Equation given the Other Root Mathematics • First Year of Secondary School
## Join Nagwa Classes
Give... | HuggingFaceTB/finemath | |
# Simple Harmonic Motion, $\omega ^2$ constant
I recently came across the formula, $$F=-kx$$; where $$F$$ represents the net force vector acting on a particle undergoing SHM at an instant when the displacement vector of the particle from the mean position is x. It further stated that $$k=m \omega^2$$, where $$m$$ repr... | HuggingFaceTB/finemath | |
# Set of Cauchy sequences is closed (Proof verification)
If $M$ is a metric space then the set of Cauchy sequences is closed in $\mathcal{B}(\mathbb{N},M)$ (set of bounded functions $x : \mathbb{N} \rightarrow M$).
My attempt:
Let $A= \lbrace x \in \mathcal{B}(\mathbb{N},M) | \space x_n \space \text{is Cauchy} \rbra... | HuggingFaceTB/finemath | |
# 4X4 Matrix determinant
If a 4X4 matrix A with rows v1, v2, v3, and v4 has determinant det A = -8
then det
|(4v1+3v4)|
|___v2___|
|___v3___| =?
|(8v1+9v4)|
- I put the underscores for spacing.
## The Attempt at a Solution
- I haven't attempting anything on this problem. There are no examples even remotely like th... | HuggingFaceTB/finemath | |
# A generalization of the quotient group: an exhaustive analysis of all possible cases
We know that if $G$ is a group and $N$ is a normal subgroup of $G$, then $G/N$ is a quotient group.
Today, we shall try and explore some fundamental questions that have plagued my understanding of Algebra for a long long time.
Wha... | HuggingFaceTB/finemath | |
## Conversion formula
The conversion factor from days to hours is 24, which means that 1 day is equal to 24 hours:
1 d = 24 hr
To convert 2678 days into hours we have to multiply 2678 by the conversion factor in order to get the time amount from days to hours. We can also form a simple proportion to calculate the re... | HuggingFaceTB/finemath | |
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# Solving Mathematical Equations Involving Theory of Structures (Coursework Samp... | HuggingFaceTB/finemath | |
# Inference for AR(p) Time Series
Consider a (stationary) autoregressive process, say of order 2,
$Y_t =\varphi_1 Y_{t-1}+\varphi_2 Y_{t-2}+\varepsilon_t$
for some white noise with variance . Here is a code to generate such a process,
> phi1=.25
> phi2=.7
> n=1000
> set.seed(1)
> e=rnorm(n)
> Z=rep(0,n)
> for(t in ... | HuggingFaceTB/finemath | |
# How do you calculate the total number of protons and electrons in a polyatomic Ion. Do you have to memorize it?
Jan 6, 2014
You need to figure out how many protons and electrons come from each atom in the polyatomic ion. Then you need to add or subtract the appropriate number of electrons to give the charge of the ... | HuggingFaceTB/finemath | |
# What is the 1st law of motion
## What are Newton’s 1st 2nd and 3rd laws of motion?
In the first law, an object will not change its motion unless a force acts on it. In the second law, the force on an object is equal to its mass times its acceleration. In the third law, when two objects interact, they apply forces t... | HuggingFaceTB/finemath | |
# Trying to model mutual inductance with losses
## Main Question or Discussion Point
So as a learning project I am trying to solve a transformer with losses but I am stuck.
1 coil L1 with N1 turns is excited by a sinusoidal voltage V1 with a resistor R1 in series. Wound around a common core with a second coil L2 with... | HuggingFaceTB/finemath | |
# Dictionary Definition
asymptote n : a straight line that is the limiting value of a curve; can be considered as tangent at infinity; "the asymptote of the curve"
# User Contributed Dictionary
## English
### Noun
1. A straight line which a curve approaches arbitrarily closely, but never reaches, as they go to inf... | HuggingFaceTB/finemath | |
# How many moles are in 15 grams of iron?
Contents
## How many moles are in a gram of iron?
We simply divide the five grams by the molar mass of iron. Molar mass is defined as the number of grams in one mole of a given element. Iron has a molar mass of 55.84 grams/mole.
## How many moles are in 14 grams?
grams is ... | HuggingFaceTB/finemath | |
# Measuring your space
### Thinking about installing a new deck (or replacing an old one)? Great! We can definitely help with that.
We know that getting your square footage can be an overwhelming task, so we wanted to provide some guidance for the best way to get accurate measurements.
Did you know that square foota... | HuggingFaceTB/finemath | |
# maths
posted by on .
each of the students in a class writes a dirrerent 2 digit number on the whiteboard. the teacher claims that no matter what the students write, there will be at least three numbers on the whiteboard whose digits have the same sum. what is the smallest number of students in the class for the tea... | HuggingFaceTB/finemath | |
Conversion of FA to Regular Expression
If there is a transition with no input in the FA, when it is converted to a regular expression should it be accepted as ɛ transition? As an example picture shown below, should regular expression showing possible transitions between 1 and 3 (1-2-3 , 1-3) be accepted (ab+ɛ) or just... | HuggingFaceTB/finemath | |
# What is the relation between RSA & Fermat's little theorem?
I came across this while refreshing my cryptography brain cells.
From the RSA algorithm I understand that it somehow depends on the fact that, given a large number (A) it is computationally impossible to derive at the two prime numbers (B & C) whose produc... | HuggingFaceTB/finemath | |
# Intercept Form Of A Line Formula Ten Common Misconceptions About Intercept Form Of A Line Formula
Intercept Form Of A Line Formula Ten Common Misconceptions About Intercept Form Of A Line Formula – intercept form of a line formula
| Welcome in order to my weblog, in this time period I’m going to teach you regarding ... | HuggingFaceTB/finemath | |
# A solid conducting sphere is given charge q and has a charge q inside the cavity
Q is on the outer surface of the sphere . Just as before (for the point charge), we start with Gauss's Law Just as for the point charge, we find and we know which means E = k Q / r 2. One can find by comparing with . b) Determine expres... | HuggingFaceTB/finemath | |
# What volume is occupied by 0.35 mol of helium gas at SATP?
Jul 18, 2017
$\text{7.84 L}$
#### Explanation:
I will assume that you mean $\text{STP (Standard Temperature and Pressure)}$.
Since we know that $\text{1 mole}$ of an ideal gas occupies $\text{22.4 L}$ at $\text{STP}$, then can establish the following rel... | HuggingFaceTB/finemath | |
Hi Guys, the second and the final post in the Time Scale series got a bit delayed, my sincere apologies. Let’s begin
#### Recap of our earlier post
In the earlier post we had seen how can we map the project period in a calendar and link that to our financial model. Do a quick review of the earlier post here – Time Sc... | HuggingFaceTB/finemath | |
# 14.2. Exam 1 for the AP CS A Exam (not timed)¶
The following problems are similar to what you might see on the AP CS A exam. Please answer each to the best of your ability.
14-2-1: Which of the following is equivalent to the statement below? Recall DeMorgan’s Law.
```!((a <= b) && (b < 0))
```
• (a >= b) && (b >= ... | HuggingFaceTB/finemath | |
# What is 71 to the 98th Power?
So you want to know what 71 to the 98th power is do you? In this article we'll explain exactly how to perform the mathematical operation called "the exponentiation of 71 to the power of 98". That might sound fancy, but we'll explain this with no jargon! Let's do it.
## What is an Expon... | HuggingFaceTB/finemath | |
Measures of Central Tendency
Mean The mean of a given set of values is equal to the sum of all the values divided by the total number of values. $\overline{)\text{x}}$ = $\frac{\sum _{\text{i = 1}}^{\text{n}}\text{xi}}{\text{n}}$ where, $\overline{)\text{x}}$ = Mean ∑ = Summation sign n = Numbe... | HuggingFaceTB/finemath | |
# Maximum and minimum word problems pdf grade
A rancher wants to build a rectangular pen, using one side of. Solving for maximum minimum word problems practice. If states have minimum standards or policies for lowvolume roads, they must be followed. In all maxima and minima problems you need to prove or derive a formu... | HuggingFaceTB/finemath | |
• Aug 13th 2008, 07:58 AM
Neenoon
sqrt(2x) = 10
Looking for x
I can't figure out how to do this (obviously I know the answer is 50, since 2x50 =100 and the sqrt(100) is 10) but I can't solve it.
• Aug 13th 2008, 08:09 AM
Chop Suey
$\displaystyle \sqrt{2x} = 10$
Let's remember some exponents rules:
$\displaystyle (... | HuggingFaceTB/finemath | |
# . A ball rolls off top of a stairway with a horizontal velocity u m/s. If the steps are h m high and b meters wide, the ball will just hit the edge of t
If the ball hits the n step, the horizontal and vertical distances transvered are nb and nh respectively. Let t be the time taken by the ball for these horizonatal ... | HuggingFaceTB/finemath | |
# How to calculate the efficiency from a $p$-$v$ diagram?
Question: Calculate the efficiency of the real and ideal cycles.
The process 1-2 is polytropic, 2-3 is isochoric, 3-4 is polytropic as well, and 4-1 completes the cycle with another isochoric process.
My attempt: I know that to calculate the efficiency of a c... | HuggingFaceTB/finemath | |
Mathematics 30 Online
OpenStudy (anonymous):
Integrate Square root of 3e^(2t) . The integral has a 5 at top and 1 at bottom
OpenStudy (anonymous):
First of all, you need to simplify the equation: \begin{align*} \sqrt{3e^{2t}} &= (3e^{2t})^{\frac{1}{2}} &= 3e^{2t*\frac{1}{2}} &= 3e^{t} \end{align*} You can then integ... | HuggingFaceTB/finemath | |
# Interactive video lesson plan for: Problems on Basic Proportionality Theorem | Triangle proportionality theorem | Thales Theorem
#### Activity overview:
Problems on Basic Proportionality Theorem | Applications of Triangle proportionality theorem | Thales Theorem
http://www.learncbse.in/ncert-solutions-class-10th-ma... | HuggingFaceTB/finemath | |
# ILP Part 58 – Kantoriiroodo
This is the fifty eighth part of the ILP series. For your convenience you can find other parts in the table of contents in Part 1 – Boolean algebra
Today we are going to solve kantoriiroodo riddle. Refer to the link to see how it works. Basically, we have a board of any size (like a ches... | HuggingFaceTB/finemath | |
# tangent lines to a circle¶
Given a fixed circle in the plane, compute the lines tangent to the circle and passing through the origin. In Fig. 8 we see a general line through the origin and two lines touching the circle.
Fig. 8 A general line through a circle and two lines touching a circle.
The tangent lines are s... | open-web-math/open-web-math | |
## Learning Machines
Taught by Patrick Hebron at ITP, Fall 2016
### Week 4:
#### Homework Review:
• Perceptron implementation
#### Linear Algebra Primer (Part 2):
##### Notation:
Scalar: x (lowercase, regular)
Vector: $$\mathbf{u}$$ (lowercase, bold)
Vector: $$\overrightarrow{u}$$ (lowercase, w/ arrow)
Matrix: $... | HuggingFaceTB/finemath | |
# Ram sold an article for Rs.1,476, after allowing a 20% discount on its marked price. If he had not allowed any discount, he would have earned a profit of 24%. What is the cost price (in Rs) of the article (correct to two decimal places)?
This question was previously asked in
Delhi Police Constable Previous Paper 18 ... | HuggingFaceTB/finemath | |
# Print
## A. Prior to the lesson:
1. Arrange students into groups. Each group needs at least ONE person who has a mobile device.
2. If their phone camera doesn't automatically detect and decode QR codes, ask students to
• Bring these devices into the lesson.
4. Cut them out and place them around your class / scho... | HuggingFaceTB/finemath | |
# How to Calculate Erosion Rate ••• jukree/iStock/Getty Images
The soil erosion rate is the loss of soil mass over time for a specific land area. Erosion is a natural process caused by wind, rain and moving water. Soil erosion affects farming, construction projects and homeowners living near rivers, oceans and on terr... | HuggingFaceTB/finemath | |
## University Calculus: Early Transcendentals (3rd Edition)
Prove that for every negative real number $-B$, there exists a corresponding $\delta\gt0$ such that for all $x$ $$0\lt|x-3|\lt\delta\Rightarrow f(x)\lt -B$$
*The formal definition of infinite limits: $\lim_{x\to c}f(x)=-\infty$ if for every negative real numb... | HuggingFaceTB/finemath | |
### bahrain vertical cylindrical tank fire volume
Tank Volume Calculator for Ten Various Tank ShapesApr 17, 2019 · Cylindrical tank volume formula. To calculate the total volume of a cylindrical tank, all we need to know is the cylinder diameter (or radius) and the cylinder height (which may be called length, if it's ... | open-web-math/open-web-math | |
## Intermediate Algebra (12th Edition)
Published by Pearson
# Chapter R - Section R.3 - Exponents, Roots, and Order of Operations - R.3 Exercises - Page 28: 3
True
#### Work Step by Step
We know that $\sqrt 25=5$, because $5^{2}=5\times5=25$. $5\gt0$, so $\sqrt 25$ is positive.
After you claim an answer you’ll ha... | HuggingFaceTB/finemath | |
# What is integral sin 2x /((sin x )^2-4)?
sciencesolve | Certified Educator
You should use the following substitution, such that:
`sin^2 x - 4 = t => 2 sin x*cos x dx = dt`
Using the double angle formula, yields:
`2 sin x*cos x dx = sin 2x => sin 2x dx = dt`
Replacing the variable to integrand, yields:
`int (si... | HuggingFaceTB/finemath | |
M06 #08 : Retired Discussions [Locked] - Page 2
Check GMAT Club Decision Tracker for the Latest School Decision Releases http://gmatclub.com/AppTrack
It is currently 22 Jan 2017, 17:44
### GMAT Club Daily Prep
#### Thank you for using the timer - this advanced tool can estimate your performance and suggest more pra... | HuggingFaceTB/finemath | |
## Essential University Physics: Volume 1 (3rd Edition)
We have to find the height of the 0 potential energy, which is in the middle of the brick. Thus, we find the middle of the brick's height originally: $h = \frac{.055}{2}=.0275 \ m$ For the next parts of the problem, we find how much the center of the brick is abo... | HuggingFaceTB/finemath | |
# Hard math equations to solve
Hard math equations to solve can help students to understand the material and improve their grades. We can solving math problem.
## The Best Hard math equations to solve
Here, we will show you how to work with Hard math equations to solve. There are a few steps you can take to become a... | HuggingFaceTB/finemath | |
# E number
The number e , Euler’s number or as it is also known, Napier’s constant is one of the irrational numbers that has the greatest relevance and importance in the area of mathematics and algebra . A basic number in exponential functions that cannot be expressed in natural numbers.
## What is the number e?
The... | HuggingFaceTB/finemath | |
# motion
acceleration final speed-initial speed ___________________time momentum massXvelocityp=m*v speed distance______time avg speed total distance___________total time what is velocity and how do you find it? the speed and direction of an objectfinal speed-initial speed what is the measure of inertia? the tendency... | HuggingFaceTB/finemath | |
Mathematics is a view to the logical structure of the world. The mathematical principles are a priori propositions whose truth-values are independent of empirical evidence, and hence the a priori.
Mathematics involves two types of things: Sets and Relations. Sets are the collections of objects, the collection being de... | HuggingFaceTB/finemath | |
# Chapter 19 Assignment 9: Auction
## 19.1 Simulate data
We simulate bid data from a second- and first-price sealed bid auctions.
First, we draw bid data from a second-price sealed bid auctions. Suppose that for each auction $$t = 1, \cdots, T$$, there are $$i = 2, \cdots, n_t$$ potential bidders. At each auction, a... | HuggingFaceTB/finemath | |
# Connexions
You are here: Home » Content » Physics for K-12 » Gravitational potential due to rigid body
• Why yet another course in physics?
• What is physics?
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Course by: Sunil Kumar Singh. E-mail the author
# Gravit... | HuggingFaceTB/finemath | |
# What is e worth?
E is the fifth letter of the English alphabet and has a numeric value of five. In mathematics, “e” is known as Euler’s number and is an important mathematical constant, approximately equal to 2. 718281828.
Euler’s number is the base of the natural logarithm, and is often simply referred to as “e” i... | HuggingFaceTB/finemath | |
# How to Convert Hexadecimal to Binary or Decimal
How do you change those funny numbers and letters to something you or your computer can understand? Converting hexadecimal to binary is very easy, which is why hexadecimal has been adopted in some programming languages. Converting to decimal is a little more involved, ... | HuggingFaceTB/finemath | |
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# Let f(x)=7tan8x+7tan6x−3tan4x−3tan2x for all x∈(−π2,π2). Then the correct expression(s) is(are)
A
π40xf(x)dx=112
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
B
π40f(x)dx=0
Right on! Give the BNAT exam to get a ... | HuggingFaceTB/finemath | |
# Superposition Theorem
Published
Even with KCL and KVL, as circuits get more complicated, sometimes the setup and the math can become quite complicated. However, using the superposition theorem, in certain situations, you can simplify the circuit by turning off or “suppressing” all the independent power sources exce... | HuggingFaceTB/finemath | |
29
Q:
# 9 men and 12 boys finish a job in 12 days, 12 men and 12 boys finish it in 10 days. 10 men and 10 boys shall finish it in how many days ?
A) 15 days B) 11 days C) 14 days D) 12 days
Answer: D) 12 days
Explanation:
9M + 12B ----- 12 days ...........(1)
12M + 12B ------- 10 days........(2)
10M + 10B -----... | HuggingFaceTB/finemath | |
# What kind of solutions does 5x^2 + 8x + 7 = 0 have?
Jun 15, 2018
#### Explanation:
The key realization is that our quadratic is of the form
$a {x}^{2} + b x + c = 0$, where the value ${b}^{2} - 4 a c$ is the discriminant, which tells us
$I . {b}^{2} - 4 a c > 0 \implies 2$ real roots
$I I . {b}^{2} - 4 a c < 0 ... | HuggingFaceTB/finemath | |
# Calculate Percentage
0
223 Calculating loss abstract concept vector illustration. Profit loss formula, accountancy service, calculating material losses, tax payment, calculate expenses, microeconomics abstract metaphor.
In mathematics, any number or ratio that can be represented as a fraction of the whole part that... | HuggingFaceTB/finemath | |
$${calculate}\:\int_{\mathrm{0}} ^{\infty} \:\:\frac{{sin}\left(\mathrm{3}{x}^{\mathrm{2}} \right)}{{x}^{\mathrm{2}} }{dx}\: \\$$
$${let}\:{A}\:=\int_{\mathrm{0}} ^{\infty} \:\:\frac{{sin}\left(\mathrm{3}{x}^{\mathrm{2}} \right)}{{x}^{\mathrm{2}} }{dx}\:\Rightarrow{A}\:=_{\sqrt{\mathrm{3}}{x}\:={t}} \:\:\:\mathrm{3}\in... | HuggingFaceTB/finemath | |
# Algebra 1
ISBN: 9780133706185
Author: Prentice Hall
Published: 2011
## Chapters: 12345678
### Chapter 1
Foundations For Algebra
1-1 Variables and Expressions Exercises p.7 1-2 Order of Operations and Evaluating Expressions Exercises p.13 1-3 Real Number and the Number Line Exercises p.20 1-4 Properties of Real ... | HuggingFaceTB/finemath | |
2
Q:
# A and B together finish a wor in 20 days.They worked together for 15 days and then B left. Afer another 10 days,A finished the remaining work. In how many days A alone can finish the job?
A) 30 B) 40 C) 50 D) 60
Explanation:
(A+B)'s 15 days work = $120×15=34$
Remaining work = 1/4
Now, 1/4 work is done b... | HuggingFaceTB/finemath | |
# What is 5 times 100?
Here we answer one simple question: What is 5 times 100? (or what is 5 multiplied by 100) Here is the answer:
### 5 x 100 = 500
Learning the multiplication of 5 times 100 is an essential skill for problems based upon fractions, decimals, and percentages. It helps in solving real-life problems ... | HuggingFaceTB/finemath | |
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Chapter 21F
# Chapter 21F - CHAPTER 21 Thermal Properties and Processes 1...
This preview shows pages 1–3. Sign up to view the full content.
CHAPTER 21 Thermal Properties and Processes 1* · Why does the mercury level first decrease slightly when a thermometer is... | HuggingFaceTB/finemath | |
# Answers
Solutions by everydaycalculation.com
## Compare 30/6 and 3/63
1st number: 5 0/6, 2nd number: 3/63
30/6 is greater than 3/63
#### Steps for comparing fractions
1. Find the least common denominator or LCM of the two denominators:
LCM of 6 and 63 is 126
Next, find the equivalent fraction of both fractiona... | HuggingFaceTB/finemath | |
Hometemplate example ➟ 0 Proportion Word Question
# Proportion Word Question
Proportion Word Question. 3) one cantaloupe costs \$2. Answers 1 5 hours 2 375 3 135 minutes 4 100 boxes 5 70 ounces 6 180 yards.
For a proportion a:b = c:d, product of means = product of extremes → b*c = a*d. What is the new width if it wa... | HuggingFaceTB/finemath | |
Browse ORBi by ORBi project The Open Access movement
ORBi is a project of
References of "Vreux, Jean-Marie" in Complete repository Arts & humanities Archaeology Art & art history Classical & oriental studies History Languages & linguistics Literature Performing arts Philosophy & ethics Religion... | open-web-math/open-web-math | |
# Difference Between ANOVA and MANOVA (With Table)
ANOVA and MANOVA are basically two different statistical methods that are used to calculate the mean for a given data. The word ANOVA stands for analysis of variant, while the word MANOVA stands for multivariate analysis of variant.
The ANOVA method used for calculat... | HuggingFaceTB/finemath | |
## Fast Perfect Square Test in Python
I was reading this stack overflow post on fast ways to check if a number is a perfect square in Python. It seems that my own version from here based on binary search might be faster than the proposed solutions. (It passes this test in 0.007768 seconds on my laptop.) I just wanted ... | HuggingFaceTB/finemath | |
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# Which rectangle A, B, C or D fits into the big square without turning?
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Hint: We all have played Puzzle games, and that is the base for this question, as you ca... | HuggingFaceTB/finemath | |
91017 (number)
91,017 (ninety-one thousand seventeen) is an odd five-digits composite number following 91016 and preceding 91018. In scientific notation, it is written as 9.1017 × 104. The sum of its digits is 18. It has a total of 4 prime factors and 8 positive divisors. There are 60,660 positive integers (up to 9101... | HuggingFaceTB/finemath | |
1. ## Related rates problem
Hey, I have this problem that I am halfway done, but I do not know how to solve the second portion.
Question
Ship S is 41 Km due North of ship T. Ship S sails south at a rate of 9 km/h. Ship T sails west at 10 km/h.
a) At what rate are they approaching or separating one hour later?
b) When... | HuggingFaceTB/finemath | |
# What is a phase class 11?
Phase of a wave describes the state of motion as the wave sweeps through an element at a particular position. In-phase– Two points are said to be in-phase with each other when these two points are at the same position and they both are doing the same thing i.e. both the two points are exhib... | HuggingFaceTB/finemath | |
# Scilab programming – FOR loops
• simple FOR loops in Scilab
• nested FOR loops in Scilab
• vectorization in Scilab
Building complex algorithms often requires repetitive actions. For example we need to evaluate the function f(x) defined below, for different values of x:
$\begin{equation*} \begin{split} f(x) = x^2 +... | HuggingFaceTB/finemath | |
# How do you solve for x in ""^3sqrt(-2-5x)+3=0?
Mar 22, 2018
I tried this:
#### Explanation:
I would try to rearrange and apply the power of $3$ to both sides:
$\sqrt[3]{- 2 - 5 x} = - 3$
raise to power $3$:
${\left(\sqrt[3]{- 2 - 5 x}\right)}^{3} = {\left(- 3\right)}^{3}$
$- 2 - 5 x = - 27$
$- 5 x = 2 - 27$
$5 x ... | HuggingFaceTB/finemath | |
Cody
# Problem 48. Making change
Solution 34247
Submitted on 8 Feb 2012 by Mike
This solution is locked. To view this solution, you need to provide a solution of the same size or smaller.
### Test Suite
Test Status Code Input and Output
1 Pass
%% a = [257.68]; b = [2 1 0 0 1 1 0 1 0 1 1 3]; out = makingChange(a)... | HuggingFaceTB/finemath | |
# Determine the values of ρ which allow the possibility of constructing a zero-risk portfolio
107 views
Consider a mean-variance portfolio model with two securities, S(A) and S(B) , where the expected return and the variance of return for S(B) are twice the corresponding values for S(A) . Suppose the correlation bet... | HuggingFaceTB/finemath | |
# Tag Archives: Zeta
$$\tag{1}1+2+3+4+\cdots =^?-\frac{1}{12}$$ There are many problems with that equality. Can a summation of positive integers lead to a negative quantity ? The equality implies that $$\sum_{k=1}^\infty k = -\frac{1}{12}$$ But we already know that $$S_N = \sum_{k=1}^Nk = \frac{N(N+1)}{2} \to … Contin... | HuggingFaceTB/finemath | |
# What is the maximum number of moves in a Giant Jenga?
You may not even know it by name, but you have certainly seen a set of little pieces of wood piled up in which people remove them from the base and put them on top until someone drops the tower. Pleasure, this game is called Jenga. The version with pieces that do... | HuggingFaceTB/finemath | |
## How to Convert Fractions Into Percents? Remember the way your mother divides a cake equally among you and your siblings? That’s one of the many real-world examples of fractions. As simple as it may sound, fractions can become a nightmare for students when solving by themselves.
Worry no more. Here, at CueMaths, we ... | HuggingFaceTB/finemath | |
This site is supported by donations to The OEIS Foundation.
Please make a donation to keep the OEIS running. We are now in our 55th year. In the past year we added 12000 new sequences and reached 8000 citations (which often say "discovered thanks to the OEIS"). We need to raise money to hire someone to manage submiss... | HuggingFaceTB/finemath | |
# Fall 2002 CSCI 333 Homework 2
This homework is not graded. It is practice for the 25 September quiz.
## Problem 1
Give the simplest big-Θ for the following functions:
1. 15 n3 + 2 n2 + 2002
2. 3n + n2002 + 2002
3. 1030 n
4. 15 n log n + 20 n
5. 17 log n
6. 17 log2 n
7. 17 log2 (n5)
## Problem 2
Give the simples... | HuggingFaceTB/finemath | |
# Chi-squared test
By Levi Clancy for Student Reader on
updated
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###### The Chi-squared test (or goodness of fit) is a test to determine if the observed results deviate too far from a theoretical expectation.
Fit means how closely the observed results agree with the expected results. To ... | HuggingFaceTB/finemath | |
# Toronto Math Forum
## APM346-2012 => APM346 Math => Home Assignment 4 => Topic started by: Calvin Arnott on October 18, 2012, 04:39:28 PM
Title: Problem 1
Post by: Calvin Arnott on October 18, 2012, 04:39:28 PM
It seems to me that question 1 part c) doesn't ask any question and instead makes a statement. Is there a... | open-web-math/open-web-math | |
# Algebra (Need help desperately)
posted by .
I really don't understand these.. can someone show me the correct way of doing them? (if it helps I will pay over paypal for detailed help or will pay in my services (I am a graphic designer, video editor, and web designer)
************************************
1. Your co... | HuggingFaceTB/finemath | |
## Thursday, February 14, 2013
### Mandarin is just a series of maths formulae
I have successfully found a series of formulae that works out a word's meaning by looking at the characters which make up that word!!!!
An earlier post of mine entitled Permit Access (permit+permit+exist+take) got me thinking (and it's al... | HuggingFaceTB/finemath | |
# If A=1+ra+r2a+ to ∞andB=1+rb+r2b+∞ , prove that r=(A−1A)1/a=(B−1B)1/b
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Text Solution
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## A=1+ra+r2a+...∞ It is a G.P. with first term 1 and common ratio ra. ∴A=11−ra ⇒1−ra=1A ⇒ra=1−1A=A−1A ⇒r=(A−1A)1a Now, B=1+rb+r2b+...∞ It is a G.P. with first term 1 and common ratio rb. ∴B=11−rb ... | HuggingFaceTB/finemath | |
# Infinity-Borel set
In set theory, a subset of a Polish space $X$ is ∞-Borel if it can be obtained by starting with the open subsets of $X$, and transfinitely iterating the operations of complementation and wellordered union. Note that the set of ∞-Borel sets may not actually be closed under wellordered union; see be... | open-web-math/open-web-math |
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