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16-01-2019
Mathematics

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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.

Respuesta :

16-01-2019

Answer:

k = -2

Step-by-step explanation:

If [tex]\frac12^{1-k}=\frac18[/tex]

Then

[tex]\frac1{2^{1-k}}=\frac18=\frac1{2^3}[/tex]

So

[tex]1-k = 3[/tex]

From this follows k = -2

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