Question

2. A number to the 8th power divided by the same number to the 4th power is 16. What is the number?

f. 2
g. 4
h. 6
j. 8

Answer 1

The answer is f.2
x^8/x^4 =16
x^8-4=16
x^4=16
x^4=2^4
x=2

Answer 2

n8/n5 = 512

n(8-5) = 512

n3 = 512

n = 8

Explanation: