Which equation could be used to calculate the sum of the geometric series? 4+1+14+116+164

Recall that Sn=a1(1−rn)(1−r)

Group of answer choices

S5=14(1−(4)5)(1−4)

S5=4(1−(14)5)(1−14)

S5=4(1−14)

S5=14(1−4)

addition

step-by-step explanation:

first, you divide the triangle in two, tô form a retangle triangle. after, using pythagoream theorem:

18^2 = 14^2 + (x/2)^2

(x^2/4) + 196 = 324

x^2/4 = 324 - 196

x^2/4 = 128

x^2 = 512

x = √512

x = √2^9

x = 16√2 cm

i hope i you.

b

step-by-step explanation:

this is because the profit is decreasing and turning into debt