Question 15 (5 points) 10 m
?
6 m
А
B. D
E
8 m
12 in.
Triangles ABC and DEF are similar triangles. What are the lengths of the unknown
sides?
A) EF = 12 in.; DF = 20 in.
B) EF = 18 in.; DF = 30 in.
C) EF = 9 in.; DF = 15 in.
OD) EF = 15 in.; DF = 9 in.

What is the sum of the geometric series in which a1 = 7, r = 3, and an = 1,701? hint: cap s sub n equals start fraction a sub one left parenthesis one minus r to the power of n end power right parenthesis over one minus r end fraction comma r ≠ 1, where a1 is the first term and r is the common ratio