please answer this question
Attachments:
Answers
Answered by
0
Answer:
Step-by-step explanation:
SRry
Answered by
0
Answer:
(D) 5
Step-by-step explanation:
9ⁿ⁺¹ / 3ⁿ⁺³ = 81
=> (3²)ⁿ⁺¹ / 3ⁿ⁺³ = 81
=> 3²ⁿ⁺² / 3ⁿ⁺³ = 81
=> 3⁽²ⁿ⁺²⁾⁻⁽ⁿ⁺³⁾ = 3ⁿ⁻¹ = 81 = 3⁴
=> n-1 = 4
=> n = 5
Similar questions