WAEC - Mathematics (2019 - No. 17)
If (0.25)\(^y\) = 32, find the value of y.
y = - \(\frac{5}{2}\)
y = -\(\frac{3}{2}\)
y = \(\frac{3}{2}\)
y = \(\frac{5}{2}\)
Explanation
(0.25)\(^y\) = 32
2\(^{-2y}\) = 3\(^{2}\)
2 - 2y = 5
y = - \(\frac{5}{2}\)
(0.25)\(^y\) = 32
2\(^{-2y}\) = 3\(^{2}\)
2 - 2y = 5
y = - \(\frac{5}{2}\)