Question 5 OT 25 What is the 7th term in the geometric sequence described by this explicit
formula?
a, = 400 - (0.5)(-1)
O A. 3.125
O B. 1200
C. 6.25
D. 6,250,000

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step-by-step explanation:

1+2+3+4+5+6+7+8+9+10 = 55

2*10 = 20

55-20 = 35

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step-by-step explanation:

b. 18

step-by-step explanation:

so the equation for this is:

ab^2=ac⋅ad

ab being the top length of 6 and ac being the length of 2 and ad being the length of x. let's plug into the equation:

6^2 = 2x

now lets just solve for x:

36 = 2x

18 = x

i hope that !