Difference 3832

Determine the difference AP if a1 = -7.5 and a1 + a2 = 4.8.

Correct answer:

d =  19.8

Step-by-step explanation:

a1=7.5 a1+a2=4.8 a2=4.8a1=4.8(7.5)=10123=12103=12.3 d=a2a1=12.3(7.5)=19.8

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