Question

The first term of a geometric sequence is 4 and the multiplier, or ratio, is 2. what is the sum of the first 5 terms of the sequence?

a. 44
b. 64
c. 44
d. 64

Answer 1

Hi,
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"Hello,Answer
=1244+8+16+32+64=124 6 minutes ago"
The first term of a geometric sequence is 4 and the multiplier, or ratio, is 2. what is the sum of the first 5 terms of the sequence?


`a_1=4\\ a_2=2*a_1=8\\ a_3=2*a_2=2^2*a_1=4*4=16\\ a_4=2^3*a_1=8*4=32\\ a_5=2^4*a_1=16*4=64\\ 4+8+16+32+64=124`