Question 1
Indices and LogarithmsIf 1/5−y = 25(54 − 2y), find the value of y.
- A.4
- B.2
- C.−4
- D.−5
Show the answer and explanation
Answer: B (2)
Explanation
5^y = 5² × 5^(4 − 2y) = 5^(6 − 2y), so y = 6 − 2y and y = 2.
If 1/5−y = 25(54 − 2y), find the value of y.
Answer: B (2)
5^y = 5² × 5^(4 − 2y) = 5^(6 − 2y), so y = 6 − 2y and y = 2.