Question

Find the nth term of an AP -0.1,-0.2,0.3,.......... . Also find its 10th term.

Answer 1

Answer:

nth term = -0.1n

10th term = -1

Step-by-step explanation:

a1 = -0.1

a2 = -0.2

a3 = -0.3

d = a2 - a1 = a3 - a2

-0.2 - (-0.1) = -0.3 -(-0.2)

-0.2 + 0.1 = -0.3 + 0.2

-0.1 = -0.1

nth term = a + (n-1)d

= -0.1 + (n-1) -0.1

= -0.1 + (-0.1n + 0.1)

= -0.1 - 0.1n + 0.1

= -0.1n

10th term = a + 9d

= -0.1 + 9(-0.1)

= -0.1 - 0.9

= -1

or 10th term = -0.1n

= -0.1(10)

= -1

hope you get your answer