Use the recursive formula to find the first five terms in the arithmetic sequence: f(1)=8
f(n)=f(n-1)+10
a.) 8, 18, 28, 38, 48 b.) 8, 13, 18, 23, 28
c.) 10, 20, 30, 40, 50 d.) 18, 28, 38, 48, 58

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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.

answer: 1475

step-by-step explanation:

becuase you have to know what they are asking you