Question

I need some help with my homework

If 8p = -2X2 - 100, which of the following could X possibly be?

Answer 1

It's x squared btw and I will award medals

Answer 2

is it supposed to be 8p or80

Answer 3

8p

Answer 4

ok

Answer 5

idk then sorry

Answer 6

It's alright thanks for trying !!!

Answer 7

then medal???

Answer 8

The answer options aren't one number for x

Answer 9

they are like formulas

Answer 10

jk i didn't do anything

Answer 11

yes of course!!! you tried your best

Answer 12

how do I give a medal exactly btw LOL

Answer 13

that will count as answering a question

Answer 14

hit best response

Answer 15

Where is the list of choices?

Answer 16

I'll post them, hold on

Answer 17

you don't need to give the medal

Answer 18

X = square root of 8 times p plus 100 over 2

X = square root of negative 8 times p plus 100 over negative 2

X = square root of negative 8 times p minus 100 over 2

X = square root of 8 times p minus 100 over negative 2

Answer 19

Isolate X

Answer 20

well if @Hero can walk me through it, then I probably will but I really do appreciate the fact that you tried to help out

Answer 21

ok so I find the square root of x squared and get the square root of x correct?

Answer 22

that is the first step in getting x by itself I think

Answer 23

You have:

8p = -2X2 - 100

So first add 100 to both sides.

Answer 24

ok so you eliminate the 100 because it is the inverse property by adding a positive to a negative so then I will get 8p+100=-2x^2 correct or naw?

Answer 25

Correct, now divide both sides by -2

Answer 26

ok so I'll get -4p+50=x^2?

Answer 27

I meant -4p-50

Answer 28

Now square root both sides.

Answer 29

so I would get the square root of x = the square root of -4p-50? what next?

Answer 30

Are you sure the original question is correct as written?

Answer 31

I am ! it is 8 times p = negative 2 times x squared minus one hundred

Answer 32

sometimes it is better just to write it as a verbal expression so there are no misunderstandings

Answer 33

http://www.wolframalpha.com/input/?i=solve%288p+%3D+-2x%5E2+-+100%2Cx%29

Answer 34

There's no misunderstanding except for the incorrect answer choices.

Answer 35

haha no joke!!! thank you so much for your help and time I really really appreciate it !

Answer 36

yw