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help-10
26c24ecb86744748b9db6992eae63bb7
329,749,386,315,956,200
Sneaky
02/13/2022 01:19:17
where F is that antiderivative of 2^(-x)
0
1
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null
null
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656
help-10
26c24ecb86744748b9db6992eae63bb7
329,749,386,315,956,200
Sneaky
02/13/2022 01:19:26
i gtg now sorry if you have anymore questions
0
1
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null
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help-10
26c24ecb86744748b9db6992eae63bb7
327,628,627,305,037,800
infrunami
02/13/2022 01:19:31
np, ty
1
0
null
null
null
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656
help-10
26c24ecb86744748b9db6992eae63bb7
327,628,627,305,037,800
infrunami
02/13/2022 01:33:43
When I compute this, I keep getting $b$ such that $a>b$. Any thoughts on why this would happen?
1
0
null
null
null
null
null
656
help-10
26c24ecb86744748b9db6992eae63bb7
510,789,298,321,096,700
TeXit
02/13/2022 01:33:45
**3rk**
https://cdn.discordapp.c…627305037835.png
327628627305037835.png
0
1
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null
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null
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656
help-10
26c24ecb86744748b9db6992eae63bb7
327,628,627,305,037,800
infrunami
02/13/2022 01:45:20
I'll close this as this is more of a computation problem ig.
1
0
null
null
null
null
null
656
help-10
26c24ecb86744748b9db6992eae63bb7
327,628,627,305,037,800
infrunami
02/13/2022 01:45:21
.close
1
0
510,789,298,321,096,700
TeXit
0796
TeXit
true
657
help-10
354906d9d90444ef8260e0f17c1fd8ca
742,415,866,922,139,800
πš‚π™°πšƒπš†π™°πšƒπ™ΎΒ©
11/07/2021 04:22:54
Two trains start at the same time from the same place and travel in opposite directions. If the rate of one is 6 miles per hour more than the rate of the other and they are 168 miles apart at the end of 4 hours, what is the rate of each?
1
0
null
null
null
null
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657
help-10
354906d9d90444ef8260e0f17c1fd8ca
742,415,866,922,139,800
πš‚π™°πšƒπš†π™°πšƒπ™ΎΒ©
11/07/2021 04:23:15
how is the answer 24 and 18?
1
0
null
null
null
null
null
657
help-10
354906d9d90444ef8260e0f17c1fd8ca
701,641,786,136,723,500
JJBigDub
11/07/2021 04:25:13
24 is the speed of the faster train and 18 is the speed of the slower one what's wrong with the answer?
0
1
null
null
null
null
null
657
help-10
354906d9d90444ef8260e0f17c1fd8ca
742,415,866,922,139,800
πš‚π™°πšƒπš†π™°πšƒπ™ΎΒ©
11/07/2021 04:27:02
no
1
0
null
null
null
null
null
657
help-10
354906d9d90444ef8260e0f17c1fd8ca
742,415,866,922,139,800
πš‚π™°πšƒπš†π™°πšƒπ™ΎΒ©
11/07/2021 04:27:05
no sir not that
1
0
null
null
null
null
null
657
help-10
354906d9d90444ef8260e0f17c1fd8ca
742,415,866,922,139,800
πš‚π™°πšƒπš†π™°πšƒπ™ΎΒ©
11/07/2021 04:27:19
i want to know, how to get those answers
1
0
null
null
null
null
null
657
help-10
354906d9d90444ef8260e0f17c1fd8ca
742,415,866,922,139,800
πš‚π™°πšƒπš†π™°πšƒπ™ΎΒ©
11/07/2021 04:27:28
how do i solve it?
1
0
null
null
null
null
null
657
help-10
354906d9d90444ef8260e0f17c1fd8ca
742,415,866,922,139,800
πš‚π™°πšƒπš†π™°πšƒπ™ΎΒ©
11/07/2021 04:27:39
@JJBigDub
1
0
null
null
null
null
null
657
help-10
354906d9d90444ef8260e0f17c1fd8ca
742,415,866,922,139,800
πš‚π™°πšƒπš†π™°πšƒπ™ΎΒ©
11/07/2021 04:27:42
u there?
1
0
null
null
null
null
null
657
help-10
354906d9d90444ef8260e0f17c1fd8ca
701,641,786,136,723,500
JJBigDub
11/07/2021 04:27:45
oh wait
0
1
null
null
null
null
null
657
help-10
354906d9d90444ef8260e0f17c1fd8ca
701,641,786,136,723,500
JJBigDub
11/07/2021 04:27:49
sorry i was afk
0
1
null
null
null
null
null
657
help-10
354906d9d90444ef8260e0f17c1fd8ca
742,415,866,922,139,800
πš‚π™°πšƒπš†π™°πšƒπ™ΎΒ©
11/07/2021 04:27:52
np
1
0
null
null
null
null
null
657
help-10
354906d9d90444ef8260e0f17c1fd8ca
701,641,786,136,723,500
JJBigDub
11/07/2021 04:28:32
assume the speed of one train to be x , so the speed of the other train will be x+6
0
1
null
null
null
null
null
657
help-10
354906d9d90444ef8260e0f17c1fd8ca
742,415,866,922,139,800
πš‚π™°πšƒπš†π™°πšƒπ™ΎΒ©
11/07/2021 04:28:38
yes
1
0
null
null
null
null
null
657
help-10
354906d9d90444ef8260e0f17c1fd8ca
742,415,866,922,139,800
πš‚π™°πšƒπš†π™°πšƒπ™ΎΒ©
11/07/2021 04:28:41
i did like that
1
0
null
null
null
null
null
657
help-10
354906d9d90444ef8260e0f17c1fd8ca
742,415,866,922,139,800
πš‚π™°πšƒπš†π™°πšƒπ™ΎΒ©
11/07/2021 04:28:48
but my answers didn't match
1
0
null
null
null
null
null
657
help-10
354906d9d90444ef8260e0f17c1fd8ca
742,415,866,922,139,800
πš‚π™°πšƒπš†π™°πšƒπ™ΎΒ©
11/07/2021 04:28:50
😦
1
0
null
null
null
null
null
657
help-10
354906d9d90444ef8260e0f17c1fd8ca
701,641,786,136,723,500
JJBigDub
11/07/2021 04:29:19
now that they are moving in the opposite direction and starting from the same place their relative velocity will be x+(x+6)=2x+6
0
1
null
null
null
null
null
657
help-10
354906d9d90444ef8260e0f17c1fd8ca
742,415,866,922,139,800
πš‚π™°πšƒπš†π™°πšƒπ™ΎΒ©
11/07/2021 04:29:42
oh
1
0
null
null
null
null
null
657
help-10
354906d9d90444ef8260e0f17c1fd8ca
701,641,786,136,723,500
JJBigDub
11/07/2021 04:30:05
now the relative distance travelled in 4 hours is 168 miles so, (2x+6)*4=168
0
1
701,641,786,136,723,500
JJBigDub
3479
JJBigDub
false
657
help-10
354906d9d90444ef8260e0f17c1fd8ca
742,415,866,922,139,800
πš‚π™°πšƒπš†π™°πšƒπ™ΎΒ©
11/07/2021 04:30:17
thanks sir πŸ™‚
1
0
null
null
null
null
null
657
help-10
354906d9d90444ef8260e0f17c1fd8ca
701,641,786,136,723,500
JJBigDub
11/07/2021 04:30:19
now find the value of x from this equation
0
1
null
null
null
null
null
657
help-10
354906d9d90444ef8260e0f17c1fd8ca
742,415,866,922,139,800
πš‚π™°πšƒπš†π™°πšƒπ™ΎΒ©
11/07/2021 04:30:20
got it
1
0
null
null
null
null
null
657
help-10
354906d9d90444ef8260e0f17c1fd8ca
742,415,866,922,139,800
πš‚π™°πšƒπš†π™°πšƒπ™ΎΒ©
11/07/2021 04:30:24
thanks a lot
1
0
null
null
null
null
null
657
help-10
354906d9d90444ef8260e0f17c1fd8ca
701,641,786,136,723,500
JJBigDub
11/07/2021 04:30:33
ok mate good luck to you :))
0
1
null
null
null
null
null
657
help-10
354906d9d90444ef8260e0f17c1fd8ca
742,415,866,922,139,800
πš‚π™°πšƒπš†π™°πšƒπ™ΎΒ©
11/07/2021 04:30:37
thanks
1
0
null
null
null
null
null
657
help-10
354906d9d90444ef8260e0f17c1fd8ca
742,415,866,922,139,800
πš‚π™°πšƒπš†π™°πšƒπ™ΎΒ©
11/07/2021 04:30:42
.close
1
0
null
null
null
null
null
657
help-10
354906d9d90444ef8260e0f17c1fd8ca
701,641,786,136,723,500
JJBigDub
11/07/2021 04:30:43
np :))
0
1
null
null
null
null
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658
help-10
2f3567637e404d9984648105d3cfa5ce
819,818,586,965,016,600
Junβ™Ύ
02/13/2022 02:04:39
https://cdn.discordapp.c…738/IMG_3220.png
IMG_3220.png
1
0
null
null
null
null
null
658
help-10
2f3567637e404d9984648105d3cfa5ce
497,503,368,374,386,700
bm
02/13/2022 02:05:47
do u know hwat a discriminant is
0
1
null
null
null
null
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658
help-10
2f3567637e404d9984648105d3cfa5ce
348,696,743,388,381,200
A Lonely Bean
02/13/2022 02:05:47
Have you tried anything so far?
0
1
null
null
null
null
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658
help-10
2f3567637e404d9984648105d3cfa5ce
819,818,586,965,016,600
Junβ™Ύ
02/13/2022 02:06:21
I know what a discriminant is but how would I use that here?
1
0
null
null
null
null
null
658
help-10
2f3567637e404d9984648105d3cfa5ce
348,696,743,388,381,200
A Lonely Bean
02/13/2022 02:06:44
When does a quadratic equation have at least 1 solution?
0
1
null
null
null
null
null
658
help-10
2f3567637e404d9984648105d3cfa5ce
497,503,368,374,386,700
bm
02/13/2022 02:06:46
do u know the quadratic formula
0
1
null
null
null
null
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658
help-10
2f3567637e404d9984648105d3cfa5ce
819,818,586,965,016,600
Junβ™Ύ
02/13/2022 02:06:55
Ye
1
0
null
null
null
null
null
658
help-10
2f3567637e404d9984648105d3cfa5ce
497,503,368,374,386,700
bm
02/13/2022 02:07:01
from the quadratic formula what does the discriminant tell u
0
1
null
null
null
null
null
658
help-10
2f3567637e404d9984648105d3cfa5ce
819,818,586,965,016,600
Junβ™Ύ
02/13/2022 02:07:08
When the discriminant is equal to zero
1
0
null
null
null
null
null
658
help-10
2f3567637e404d9984648105d3cfa5ce
348,696,743,388,381,200
A Lonely Bean
02/13/2022 02:07:18
I said *at least* 1
0
1
null
null
null
null
null
658
help-10
2f3567637e404d9984648105d3cfa5ce
497,503,368,374,386,700
bm
02/13/2022 02:07:19
not quite
0
1
null
null
null
null
null
658
help-10
2f3567637e404d9984648105d3cfa5ce
348,696,743,388,381,200
A Lonely Bean
02/13/2022 02:07:25
Not just 1
0
1
null
null
null
null
null
658
help-10
2f3567637e404d9984648105d3cfa5ce
819,818,586,965,016,600
Junβ™Ύ
02/13/2022 02:08:16
When the discriminant is greater than zero, it has 2 solutions
1
0
null
null
null
null
null
658
help-10
2f3567637e404d9984648105d3cfa5ce
348,696,743,388,381,200
A Lonely Bean
02/13/2022 02:08:44
Yeah, so it has *at least* 1 (1 or 2) solutions when the discriminant is great than 0 or equal to it
0
1
819,818,586,965,016,600
Junβ™Ύ
4094
Junβ™Ύ
false
658
help-10
2f3567637e404d9984648105d3cfa5ce
819,818,586,965,016,600
Junβ™Ύ
02/13/2022 02:08:55
Ok
1
0
null
null
null
null
null
658
help-10
2f3567637e404d9984648105d3cfa5ce
348,696,743,388,381,200
A Lonely Bean
02/13/2022 02:09:08
So you'd need the discriminant satisfy that inequality
0
1
null
null
null
null
null
658
help-10
2f3567637e404d9984648105d3cfa5ce
348,696,743,388,381,200
A Lonely Bean
02/13/2022 02:09:14
In this question
0
1
null
null
null
null
null
658
help-10
2f3567637e404d9984648105d3cfa5ce
819,818,586,965,016,600
Junβ™Ύ
02/13/2022 02:09:32
So I use the b^2 -4ac
1
0
null
null
null
null
null
658
help-10
2f3567637e404d9984648105d3cfa5ce
819,818,586,965,016,600
Junβ™Ύ
02/13/2022 02:10:11
What would I place in place of b?
1
0
null
null
null
null
null
658
help-10
2f3567637e404d9984648105d3cfa5ce
819,818,586,965,016,600
Junβ™Ύ
02/13/2022 02:10:24
(?K+1)
1
0
null
null
null
null
null
658
help-10
2f3567637e404d9984648105d3cfa5ce
348,696,743,388,381,200
A Lonely Bean
02/13/2022 02:11:17
Yes in this case b, the coefficient of x, is k + 1
0
1
348,696,743,388,381,200
A Lonely Bean
7998
A Lonely Bean
false
658
help-10
2f3567637e404d9984648105d3cfa5ce
819,818,586,965,016,600
Junβ™Ύ
02/13/2022 02:12:22
Ok
1
0
null
null
null
null
null
658
help-10
2f3567637e404d9984648105d3cfa5ce
819,818,586,965,016,600
Junβ™Ύ
02/13/2022 02:15:56
What about in this case?
https://cdn.discordapp.c…098/IMG_3222.png
IMG_3222.png
1
0
819,818,586,965,016,600
Junβ™Ύ
4094
Junβ™Ύ
false
658
help-10
2f3567637e404d9984648105d3cfa5ce
819,818,586,965,016,600
Junβ™Ύ
02/13/2022 02:17:40
I did this, is this correct?
https://cdn.discordapp.c…2FFE995BB1BA.jpg
2C5B8B4A-9C1E-4780-89E2-2FFE995BB1BA.jpg
1
0
null
null
null
null
null
658
help-10
2f3567637e404d9984648105d3cfa5ce
348,696,743,388,381,200
A Lonely Bean
02/13/2022 02:17:51
Well first of all here you'd need k to be positive, because if it was negative then the parabola would go downwards
0
1
null
null
null
null
null
658
help-10
2f3567637e404d9984648105d3cfa5ce
348,696,743,388,381,200
A Lonely Bean
02/13/2022 02:18:01
Meaning it'll be negative somewhere
0
1
null
null
null
null
null
658
help-10
2f3567637e404d9984648105d3cfa5ce
348,696,743,388,381,200
A Lonely Bean
02/13/2022 02:18:18
And secondly, if a quadratic is always positive, it means that it has no real roots
0
1
null
null
null
null
null
658
help-10
2f3567637e404d9984648105d3cfa5ce
348,696,743,388,381,200
A Lonely Bean
02/13/2022 02:18:26
Do you'd need its discriminant to be negative
0
1
null
null
null
null
null
658
help-10
2f3567637e404d9984648105d3cfa5ce
819,818,586,965,016,600
Junβ™Ύ
02/13/2022 02:18:51
Ok
1
0
null
null
null
null
null
658
help-10
2f3567637e404d9984648105d3cfa5ce
819,818,586,965,016,600
Junβ™Ύ
02/13/2022 02:19:02
So what should I do first then?
1
0
null
null
null
null
null
658
help-10
2f3567637e404d9984648105d3cfa5ce
348,696,743,388,381,200
A Lonely Bean
02/13/2022 02:20:07
What'd the discriminant of the quadratic be in this case?
0
1
null
null
null
null
null
658
help-10
2f3567637e404d9984648105d3cfa5ce
819,818,586,965,016,600
Junβ™Ύ
02/13/2022 02:20:51
(3k)^2 - 4(k)(9)
1
0
null
null
null
null
null
658
help-10
2f3567637e404d9984648105d3cfa5ce
819,818,586,965,016,600
Junβ™Ύ
02/13/2022 02:24:42
?
1
0
null
null
null
null
null
658
help-10
2f3567637e404d9984648105d3cfa5ce
819,818,586,965,016,600
Junβ™Ύ
02/13/2022 02:25:27
@A Lonely Bean
1
0
null
null
null
null
null
658
help-10
2f3567637e404d9984648105d3cfa5ce
348,696,743,388,381,200
A Lonely Bean
02/13/2022 02:25:58
Yeah, now you need 9k^2 - 36k < 0
0
1
null
null
null
null
null
658
help-10
2f3567637e404d9984648105d3cfa5ce
819,818,586,965,016,600
Junβ™Ύ
02/13/2022 02:26:04
Ok
1
0
null
null
null
null
null
658
help-10
2f3567637e404d9984648105d3cfa5ce
348,696,743,388,381,200
A Lonely Bean
02/13/2022 02:26:05
So k^2 - 4k < 0
0
1
null
null
null
null
null
658
help-10
2f3567637e404d9984648105d3cfa5ce
819,818,586,965,016,600
Junβ™Ύ
02/13/2022 02:26:15
Yep
1
0
null
null
null
null
null
658
help-10
2f3567637e404d9984648105d3cfa5ce
348,696,743,388,381,200
A Lonely Bean
02/13/2022 02:26:55
Oh yeah btw you'd also need to consider the case when k = 0, because the discriminant and quadratic formulas don't work in that case
0
1
null
null
null
null
null
658
help-10
2f3567637e404d9984648105d3cfa5ce
348,696,743,388,381,200
A Lonely Bean
02/13/2022 02:27:04
As you can see k = 0 works
0
1
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null
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null
658
help-10
2f3567637e404d9984648105d3cfa5ce
348,696,743,388,381,200
A Lonely Bean
02/13/2022 02:27:10
Because 9 > 0
0
1
null
null
null
null
null
658
help-10
2f3567637e404d9984648105d3cfa5ce
348,696,743,388,381,200
A Lonely Bean
02/13/2022 02:27:27
In this inequality you can divide both sides by k
0
1
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658
help-10
2f3567637e404d9984648105d3cfa5ce
348,696,743,388,381,200
A Lonely Bean
02/13/2022 02:27:33
The signs won't flip because k is positive
0
1
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658
help-10
2f3567637e404d9984648105d3cfa5ce
348,696,743,388,381,200
A Lonely Bean
02/13/2022 02:27:37
As I said earlier
0
1
null
null
null
null
null
658
help-10
2f3567637e404d9984648105d3cfa5ce
819,818,586,965,016,600
Junβ™Ύ
02/13/2022 02:27:51
But this is the answer
https://cdn.discordapp.c…078/IMG_3224.png
IMG_3224.png
1
0
null
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658
help-10
2f3567637e404d9984648105d3cfa5ce
348,696,743,388,381,200
A Lonely Bean
02/13/2022 02:28:42
Yes it is
0
1
348,696,743,388,381,200
A Lonely Bean
7998
A Lonely Bean
false
658
help-10
2f3567637e404d9984648105d3cfa5ce
348,696,743,388,381,200
A Lonely Bean
02/13/2022 02:28:51
You get k - 4 < 0 after dividing
0
1
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658
help-10
2f3567637e404d9984648105d3cfa5ce
348,696,743,388,381,200
A Lonely Bean
02/13/2022 02:28:53
So k < 4
0
1
null
null
null
null
null
658
help-10
2f3567637e404d9984648105d3cfa5ce
819,818,586,965,016,600
Junβ™Ύ
02/13/2022 02:29:00
I’m a little confused
1
0
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null
null
null
658
help-10
2f3567637e404d9984648105d3cfa5ce
819,818,586,965,016,600
Junβ™Ύ
02/13/2022 02:29:08
Can you check my working out
1
0
null
null
null
null
null
658
help-10
2f3567637e404d9984648105d3cfa5ce
348,696,743,388,381,200
A Lonely Bean
02/13/2022 02:29:56
In the photo you sent you made the discriminant positive
0
1
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658
help-10
2f3567637e404d9984648105d3cfa5ce
348,696,743,388,381,200
A Lonely Bean
02/13/2022 02:30:04
Meaning the quadratic does have roots
0
1
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658
help-10
2f3567637e404d9984648105d3cfa5ce
348,696,743,388,381,200
A Lonely Bean
02/13/2022 02:30:13
Which is opposite of what we needed
0
1
null
null
null
null
null
658
help-10
2f3567637e404d9984648105d3cfa5ce
819,818,586,965,016,600
Junβ™Ύ
02/13/2022 02:30:58
So you mean to say the signs are β€œless than?”
1
0
null
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null
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null
658
help-10
2f3567637e404d9984648105d3cfa5ce
819,818,586,965,016,600
Junβ™Ύ
02/13/2022 02:32:14
So I got this
https://cdn.discordapp.c…2AD127EA281D.jpg
1077584A-DA09-4B7C-85F8-2AD127EA281D.jpg
1
0
null
null
null
null
null
658
help-10
2f3567637e404d9984648105d3cfa5ce
819,818,586,965,016,600
Junβ™Ύ
02/13/2022 02:32:42
Thanks for your help
1
0
null
null
null
null
null
658
help-10
2f3567637e404d9984648105d3cfa5ce
819,818,586,965,016,600
Junβ™Ύ
02/13/2022 02:33:05
.close
1
0
null
null
null
null
null
659
help-10
12ea38f1f745492fbf078371c7736659
605,136,778,583,867,400
XΜ΅Ν’Μ…
02/13/2022 03:08:52
Any videos about this topic
https://cdn.discordapp.c…20213_120829.jpg
20220213_120829.jpg
1
0
null
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null
659
help-10
12ea38f1f745492fbf078371c7736659
605,136,778,583,867,400
XΜ΅Ν’Μ…
02/13/2022 03:08:56
Question 3
1
0
null
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null
null
659
help-10
12ea38f1f745492fbf078371c7736659
605,136,778,583,867,400
XΜ΅Ν’Μ…
02/13/2022 03:09:04
Or can someone explain
1
0
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null
659
help-10
12ea38f1f745492fbf078371c7736659
198,191,547,970,355,200
sills
02/13/2022 03:09:19
Use laws of indices
0
1
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659
help-10
12ea38f1f745492fbf078371c7736659
198,191,547,970,355,200
sills
02/13/2022 03:09:48
https://cdn.discordapp.c…2928/indices.png
indices.png
0
1
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null
659
help-10
12ea38f1f745492fbf078371c7736659
605,136,778,583,867,400
XΜ΅Ν’Μ…
02/13/2022 03:11:33
Thank you so much
1
0
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null
659
help-10
12ea38f1f745492fbf078371c7736659
198,191,547,970,355,200
sills
02/13/2022 03:11:58
@XΜ΅Ν’Μ… whats this? πŸ‘€
https://cdn.discordapp.c…0062/unknown.png
unknown.png
0
1
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659
help-10
12ea38f1f745492fbf078371c7736659
198,191,547,970,355,200
sills
02/13/2022 03:12:05
is this a Examination
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1
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