Question

plz help....Which value of a solves the equation?

a–3 = 8

A.4


B.1/2


C.2


D.-2

Answer 1

I mean the equation is\[a ^{-3}=8\]

Answer 2

damn, I know the answer, but....

Answer 3

i'll tell you lol

Answer 4

i'll help you

Answer 5

ok

Answer 6

\[2^{3} = 8\]

Answer 7

it is b. not a, c, or d

Answer 8

RULE - \(\Huge\color{blue}{ \sf a^{-3}= \frac{1}{a^3} }\)

\(\Huge\color{blue}{ \sf 8= \frac{1}{a^3} }\) both sides times a^3,

\(\Huge\color{blue}{ \sf 8a^3= 1}\) divide both sides by 8,

\(\Huge\color{blue}{ \sf a^3= \frac{1}{8}}\)


can you do it from here?

Answer 9

thanks!!

Answer 10

im sure it is 1/2 not 1/8. And besides, 1/8 is not one of the choices right

Answer 11

nope

Answer 12

its not one of the choices

Answer 13

@linda3

Answer 14

so you still need help?

Answer 15

yup dont get what the other ppl are writing :(

Answer 16

oh ok , let me take a look at it! :)

Answer 17

do you think the answer is C?

Answer 18

hang on let me check

Answer 19

ok

Answer 20

Okay so this is where you got confused... when the guy told you that a too the power of 3 = 1/8 he did not finish solving the problem. Here you have to find what a is.

Answer 21

ok

Answer 22

i will show u in a drawing.

Answer 23

ok :)