Question

Please Help! I'm stuck!

Answer 1

C.
`5 ((x)/(z)) ^1^0`

Explanation:

Hey there!

Given

`(15 x^-^3 z^5)/(3 x^7 z ^-^5)`

Well to solve this we first need to do 15 ÷ 3

= 5

When dividing exponents we actually subtract.

-3 - 7 = -10

5 - -5 = 10

`5 x^-^1^0 z^1^0`

Hope this helps :)

Answer 2

D. 5 (z/x)^10.

Explanation:

15/3 = 5

x^-3 / x^7 = x^-10 = 1/x^10

z^5 / z^-5 = z ^10

So the answer is 5 * z^10 * 1/x^10

= 5 z^10 / x^10

= 5 (z/x)^10.