Question

HELP!!

Answer 1

@4everaddicted2anime

Answer 2

whats ur question?

Answer 3

\[f(x)=\frac{ x^2 }{ 16 }=2x\]

Answer 4

sry idk

Answer 5

Its okay thanks for trying

Answer 6

4ever im sorry i didnt reply a bit ago i had to go to lunch

Answer 7

Were you given an x value to plug in? It's okay

Answer 8

What do you have to do?

Answer 9

yeah sorry x=8

Answer 10

A.
–15
B.
20
C.
–12
D.
–24

Answer 11

Okay so first you need to plug in 8 for every x you see. You should get \[f(8)=\frac{ 8^2 }{ 16 }=2(8)\] Now you need to simplify whatever can be simplified. The first part would be 8^2 and 2(8). After doing this you should get\[f(8)=\frac{ 64 }{ 16 }=16\] Next you need to multiply by 16 on both sides to cancel out the denominator. You should get \[f(8)=64=256\] I'm confused. Is this all you were given to solve this?

Answer 12

yes

Answer 13

i have to find the value of f(x)

Answer 14

Ohh. Don't pay any attention to what I said in the last post. All you need to do is plug in the answers to see if they are true. First lets use -15.
\[f(-15)=\frac{ (-15)^2 }{ 16 }=2(-15)\] Simplify what can be to get\[f(-15)=\frac{ 225 }{ 16 }=-30\] Now multiply by 16 on both sides of the second = sign to get\[f(-15)=225\neq480\] Since 225 does not equal 480, this answer is not true

Answer 15

okay so we rule out -15

Answer 16

so its b c or d

Answer 17

I'll be back shortly

Answer 18

alrighty

Answer 19

Now lets try using b which is 20.
\[f(20)=\frac{ 20^2 }{ 16 }=2(20)\] Simplify the multiplication areas to get\[f(20)=\frac{ 400 }{ 16 }=40\] Multiply by 16 on both sides to get rid of the denominator. You should have got\[f(20)=400\neq640\] This means that option b is not true.

Answer 20

so a and b are out of the question

Answer 21

Now lets try using c which is -12\[f(-12)=\frac{ (-12)^2 }{ 16 }=2(-12)\] Simplify the multiplication areas to get\[f(-12)=\frac{ 144 }{ 16 }=-24\] Multiply by 16 on both sides to get rid of the denominator. You should have got\[f(-12)=144\neq-384\] This means that option c is not true.

Answer 22

So its D!

Answer 23

yes

Answer 24

you deserve 5 medals for spending 30 minutes on it lol

Answer 25

aww thanks

Answer 26

can you help with a few more so i can give more medals?

Answer 27

sure