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Post New Question
All Questions
+0
232802 Questions
-1
468
3
CPHIL PLEASE HELP FAST
If $3x+7 \equiv$ (mod $16$), then $2x+11$ is congruent (mod $16$) to what integer between $0$ and $15$, inclusive?
P.S The answer is NOT $11$, I already tried that.
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Guest
Jun 17, 2021
0
333
1
Quadratic Roots
Find the sum of all integral values of c with c <= 25 for which the equation y = x^2 - 17x - c has two rational roots.
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Guest
Jun 17, 2021
0
351
1
Need help with percent
Liam had 75% more magnets than John at first. Liam gave away 200% as many magnets as John. John was left with 25% of the magnets he had at first. What fraction of Liam's magnets did he have in the end?
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Guest
Jun 17, 2021
0
326
1
Congruent Triangles
Select the two triangles that must be congruent.
catmg
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Guest
Jun 17, 2021
0
431
1
+37
Can I get some help with terminating decimals?
Theres 2 questions,
1. What is when expressed in base 10?
read more ..
catmg
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Skripple
Jun 17, 2021
0
345
1
Congruent Triangles
Select the two triangles that must be congruent.
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Guest
Jun 17, 2021
0
349
1
Help quadratic
What is the minimum value of 5x^2 - 20x + 1357 - 80x + 415?
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Guest
Jun 17, 2021
0
357
2
HALP!!
what is $\dfrac{\dbinom {n}{k-1}}{\dbinom{n}{k-2}}$????
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Guest
Jun 17, 2021
0
333
1
Coordinates
Given that M(1,-6) is the midpoint of AB and A(-2,-1) is one endpoint, what is the sum of the coordinates of point B?
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Guest
Jun 17, 2021
0
364
1
Logarithms
Find a/b when 2*log(a - b) = log(a) + log(b).
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Guest
Jun 17, 2021
0
330
1
Please help fast
If $3x+7 \equiv 2$ (mod $16$), then $2x+11$ is congruent (mod $16$) to what integer between $0$ and $15$, inclusive?
P.S Please add an explanation.
catmg
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Guest
Jun 17, 2021
0
401
1
Algebra
If f(x) is a monic quartic polynomial such that f(-1)=-1, f(2)=-4, f(-3)=9, and f(4)=-16, find f(1).
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Guest
Jun 17, 2021
0
371
2
Help geo prob
Find AC such that AB= 5sqrt2 and angle b= 45 and angle a=15.
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Guest
Jun 17, 2021
0
374
1
what is 100000000009999985 divided by 66764746767647434
what is 100000000009999985 divided by 66764746767647434
bc it equals 3000006700
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Guest
Jun 17, 2021
0
320
1
help pls
Bryan and Harold had 108 marbles altogether. Kaden gave away 1/2 as many marbles as what John gave away. The number of marbles John had left was the same as the number of marbles he had given away. If John had 1/2 as many marbles left as Kaden, how many
read more ..
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Guest
Jun 17, 2021
0
371
2
Geometry problem
In triangle ABC, AB = AC. Point P lies on line AB such that CP = BC. If angle APC = 116 degrees, what is angle ACP(in degrees)?
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Guest
Jun 17, 2021
0
504
3
help! don't rly understand the restrictions
My three-digit code is 023. Reckha can't choose a code that is the same as mine in two or more of the three digit-positions, nor that is the same as mine except for switching the positions of two digits (so 320 and 203, for example, are forbidden, but 302
read more ..
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Guest
Jun 17, 2021
0
345
2
Hey all, another repost
https://web2.0calc.com/questions/hey-guys-really-need-help-hints-would-even-help-really-stuck
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Guest
Jun 17, 2021
0
375
2
Ratios
The ratio of the number of apples Nicole and Hannah had was 1:3. When Nicole bought 4 more apple and Hannah bought 3 more apples, the ratios became 1:2. Find the number of applles Hannah had in the end.
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Guest
Jun 17, 2021
0
556
1
Number Theory question
What is the smallest positive integer n such that 2n is a perfect square and 3n is a perfect cube and 5n is a perfect fifth power?
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Guest
Jun 17, 2021
0
333
1
Help with algebra
Prove that if the roots of x^3 - 9x^2 + 11x + c form an arithmetic sequence, then c = 21.
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Guest
Jun 17, 2021
0
345
1
Polynomial question
Find a monic quartic polynomial f(x) with rational coefficients whose roots include x = 1 - sqrt(2) and x = 2 + sqrt(7).
catmg
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Guest
Jun 17, 2021
0
345
1
Question
This problem was posted before, but was only answered by a troll guest.
https://web2.0calc.com/questions/paper-hmm-yes
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Guest
Jun 17, 2021
0
352
1
help counting
Andrew chooses a number from 1 to 100, and Mary also chooses a number from 1 to 100. (They may choose the same number.) It turns out that the product of their numbers is a multiple of 10. In how many ways could Andrew and Mary have chosen their numbers?
read more ..
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Guest
Jun 17, 2021
0
231
0
anyone help?
Describe using terms and concepts that we learned in this course how you would measure the height of a tree in your friend's backyard. You need to include all the steps that you would take. Hint* Use the word clinometer in your explanation.
<
read more ..
Guest
Jun 17, 2021
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