Andrea's rectangle measures 2 1/2 units by 2 1/2 units. What is its area?
1 answer:
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Answer (C) 50 degrees
Steps: please check the attached image for details
Answer:
C
Step-by-step explanation:
The n th term formula of a geometric sequence is
= a
where a is the first term and r the common ratio
Using the second and fourth term, then
ar = 6 → (1)
ar³ = 54 → (2)
Divide (2) by (1)
=
= 9
r² = 9 ⇒ r = = 3 → C