Question

k is a an integer for which 1/2^1-k, 1/8. What is the value of k? 1/2^1-k must be equal to 1/8 if i read the question right.

Answer 1

k = -2

Explanation:

If
`\frac12^(1-k)=\frac18`

Then

`\frac1{2^(1-k)}=\frac18=\frac1{2^3}`

So

`1-k = 3`

From this follows k = -2