SOLUTION: If 2^r + 2^r + 2^r + 2^r = 26, what is the value of r?

Question 226059: If 2^r + 2^r + 2^r + 2^r = 26, what is the value of r?
Found 2 solutions by nerdybill, solver91311:
Answer by nerdybill(7384) (Show Source): You can put this solution on YOUR website!
2^r + 2^r + 2^r + 2^r = 26
4[2^r} = 26
2^r = 26/4
2^r = 6.5
r =
r = log(6.5)/log(2)
r = 2.7

Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!

But , so:

which is an exact answer. If you have a capable enough calculator or use Excel you can get the numeric approximation

John

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