Question

eter

Answer 1

Hey, what does the first sentence mean exactly?

Answer 2

Does it mean it is the square of x, or what? Sorry, I'm not good with the word part of math.

Answer 3

6. C.

Answer 4

Oh, I get it!

Answer 5

Okay look, the square root of 100 is ten

Answer 6

And half of 10 is five.

Answer 7

http://openstudy.com/study#/updates/50475dabe4b0c3bb098603bb
This link explains it all

Answer 8

Okay, so just do the opposite on 6, and double it, which makes 12. The square of 12 is 144! So C

Answer 9

y=kx
replace values of x and y to find k
then solve for x=6

Answer 10

i did these on the closed question earlier
http://openstudy.com/study#/updates/525416d6e4b0328cd503872d
i would have done it before it closed but i had class

Answer 11

i can copy them here if you prefer?

Answer 12

She's not here, so I think you should do that. :)

Answer 13

direct variation is y=kx but in this case since its the square of x
y=kx^2 substitute the variables in order to find k
100=k5^2
100=25k
k=4 now substitute k into the equation
y=4x^2 now we can find y with x
y=4(6^2)
y=4(36)
y=144 so again the answer is C

Answer 14

inverse variation is y=k/x or k=xysince its two x its
y=k/2x or k=2xy we will use the 2nd one since its easier, substitute x and y
k=2(2)*5
k=4*5
k=20
so the equation is y=20/2x so substitute x
y=20/(2*10)
y=20/20
y=1 so the answer is A

Answer 15

courage to type that stuff @insanitycat