Difference 3923

Determine the ninth term and the difference AP if a3 = 4.8 and a2 + a3 = 8.

Correct answer:

d =  1.6
a9 =  14.4

Step-by-step explanation:

a3=4.8 a2+a3=8 a2=8a3=84.8=516=351=3.2 d=a3a2=4.83.2=1.6
a1=a2d=3.21.6=58=153=1.6 a9=a1+8 d=1.6+8 1.6=14.4

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