Calculate 5514

Calculate a3 GP if you know that q = 4 and a1 + a2 + a3 = 89.25 and a4 = 272.

Correct answer:

a3 =  68

Step-by-step explanation:

q=4 a4=272 a3=a4/q=272/4=68 a2=a3/q=68/4=17 a1=a2/q=17/4=417=441=4.25 s=a1+a2+a3=4.25+17+68=4357=8941=89.25 a3=a4/q=272/4=68



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