Question

Given 16 = −5 + z4 solve for z a. 59 b.-1 c.9 d. 69

Answer 1

The answer is 69.

the equation is setup like this

16 = -5 + z / 4

/ = divide

-5 + z are added together to then be divided by 4 and to complete the equation.

To get the answer you then follow the basic equation it gives you.

You put 69 where z is and you add -5 which turns 69 into 64.

You then divide 64 by 4 and you get 16. so 16 = 16

so this 16 = -5 + z / 4 turns into this 16 = 16

The answer to complete this equation is 69!

Z = 69

I hope this detailed answer is what your looking for. i got it right on my test btw.

Explanation:

Answer 2

In the question 16 = −5 + z∧4, z is the only unknown value. It can be solve as follows,

16 = −5 + z∧4
z∧4 = 16+5
z∧4 = 21

Find the 4th root on both side of the equation,
z = the 4th root of 21
= 2.140695143

To the nearest tenth, z = 2.1