Question

1. Find out a and d for each of the following
APs :
(1)-12, -7, -2, 3,.....
(2) 2.5, 1.5, 0.5, -0.5, ...
(3) 2³, 3³,46,...
(4) 3/4 , 1 ,5/4 , 3/2........​

Answer 1

Answer:

In (1), a = -12 and d = -7 - (-12) = 5.

In (2), a = 2.5 and d = 2.5 - 1.5 = 1

In (3), a = 8 and d = 27 - 8 = 18

In (4), a = 0.75 and d = 1 - 0.75 = 0.25 or 1/4.

Step-by-step explanation:

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Answer 2

Step-by-step explanation:

1) a=-12

d= -7-(-12)

= -7+12

= 5

2)a=2.5

d=1.5-2.5

=-1

3)a=2³=8

d= 3³-2³=27-8=19

4) a=3/4

d=1-3/4

= 1/4

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