<span>x^2 – 8x + 16 = 0
(x - 4)^2 = 0
x - 4 = 0
x = 4
hope it helps</span>
Answer:
Step-by-step explanation:
symmmmmmmmmmm
It will take jen 20 weeks till she can get a new camping tent
Hello from MrBillDoesMath!
Answer:
Take you pick below! (either x 8 or x = 7.01, approx, depending how the question is interpreted)
Discussion:
Interpretation 1
If the question is
2^(x -1) = 128, then as 2^7 = 128,
x-1 = 7 so x = 8
Interpretation 2
If the question is (2^x -1) = 128, then..
2^x = 128 + 1 = 129 =>
log(2^x) = log(129) =>
xlog(2) = log(129) =>
x = log (129) / log2 = 7.01
Regards,
MrB
