Question 25
IndicesIf 5(x + 2y) = 5 and 4(x + 3y) = 16, find 3(x + y)
- A.0
- B.1
- C.3
- D.27
Show the answer and explanation
Answer: B (1)
Explanation
x + 2y = 1 and x + 3y = 2, so y = 1 and x = −1. Then 3^(x + y) = 3⁰ = 1.
If 5(x + 2y) = 5 and 4(x + 3y) = 16, find 3(x + y)
Answer: B (1)
x + 2y = 1 and x + 3y = 2, so y = 1 and x = −1. Then 3^(x + y) = 3⁰ = 1.