if 5 a = 3125, then the value of 5(a-3) is :
if 5 a = 3125, then the value of 5(a-3) is :
Answer/Solution
25
Steps/Work
Solution
5 a = 3125 ⇔ 5 a = 5 a ⇔ a = 5.
∴ 5(a - 3) = 5(5 - 3) = 52 = 25.
Answer A
5 a = 3125 ⇔ 5 a = 5 a ⇔ a = 5.
∴ 5(a - 3) = 5(5 - 3) = 52 = 25.
Answer A