Write the explicit formula for the geometric sequence.
2 answers:
I believe the answer is D
Answer:
Uₙ = 2(4)ⁿ⁻¹
Step-by-step explanation:
General Formula: Uₙ = a(r)ⁿ⁻¹
a = first term = 2
r = common ratio
r = (Uₙ₊₁)/Uₙ:
r = U₂/U₁
r = 8/2 = 4
∴ formula is: Uₙ = 2(4)ⁿ⁻¹
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I think its C im pretty sure sorry if im wrong!
The answer is (A) 5.5 centimeters. The height is found by 33/6, since the area of a parallelogram is base*height.
So... 2n>30 and 5n<100. So if you divide out 2 and 5, you get n>15 and n<20. Therefore 15<n<20
