Question

Which of the following best describes the equation below?

2(x + 10) + 8x = 10x - 20
A. infinite real solutions
B. no real solutions
C. exactly one real solution, x =
D. exactly one real solution, x = -1

Answer 1

I think that it is B or A

Answer 2

2x + 20 + 8x = 10x - 20
10x = 10x
0 = 0

when we substitute 2 for x:
2(2) + 20 + 8(2) = 10(2) - 20
4 + 20 + 16 = 20 - 20
40 = 0, which is obviously not true

so no real solutions

Answer 3

thank you

Answer 4

If r = 6 units and h = 9 units, what is the volume of the cylinder shown above? Use 3.14 for .
A. 1,526.04 cubic units
B. 452.16 cubic units
C. 339.12 cubic units
D. 1,017.36 cubic units

Answer 5

do you have a picture of the cylinder?

Answer 6

we don't really need the picture tho. we just need the info

Answer 7

\[v~=~\pi r ^{2}h\]

Answer 8

so v = 3.14(6^2)(9) do that and you'll have your answer

Answer 9

can you draw the equation because im pretty lost. thats how dumb i am.

Answer 10

Your not dumb just confused

Answer 11

the formula for the volume of a right cylinder is pi times radius squared times height