if the 1st term of the geometric sequence is 10 and the common ratio is ⅔ what is the 4th term?
a. 20
b. 22.5
c. 30
d. 33.75
a. 20
b. 22.5
c. 30
d. 33.75
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Answer:
The 4th term is 33.75
Step-by-step explanation:
a1 = 10
r = 3/2
a4 = ?
an = a1r^(n-1)
a4 = 10(3/2)^(4-1)
a4 = 10(3/2)³
a4 = 10(27/8)
a4 = 33.75
10, 15, 22.5, 33.75