Fifth member

Determine the fifth member of the arithmetic progression if the sum of the second and fifth members equals 73 and the difference d = 7.

Correct answer:

a5 =  47

Step-by-step explanation:

a2+a5=73 d=7 a1+d+a1+4d = 73 a1=(735 d)/2=(735 7)/2=19 a5=a1+4 d=19+4 7=47



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