Question

If 102y = 25, then 10-y equals:

(a) -1/5, (b) 1/625, (c) 1/50, (d) 1/25, (e) 1/5

Answer 1

Step-by-step explanation:

102y = 25

(10y)2 = 52

10y = 5

1/10y = 1/5 

10-y = 1/5

Answer: (E)

Answer 2

Answer:

102 y = 25.

$Y = \frac{25}{102}$

$Y = 4.08$

$10 - Y = ?$

$10 - 4.08 = 5.92$