Question

Write first four terms If a = 10, d = 10

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Answer 1

Answer:

10, 20, 30, 40

Step-by-step explanation:

Given,

a = 10 and d=10

so,

1st 4 terms

a1 = a = 10

a2 = a+d = 10+10 = 20

a3 = a+2d = 10+20 = 30

a4 = a+3d = 10+30 = 40.

Answer 2

Answer:

b=10

Step-by-step explanation:

b²=a x d

putting values of a and d

b²=10x10

b²=100

√b²=√10²

b=10