Question

Find the 9 term of AP -15, -11, -7...... 49.

Answer 1

Answer:

17

Step-by-step explanation:

nth term of any AP is defined as:-

nth term = a + ( n - 1 )d, where a is the first term and d is the common difference.

Here,

a = first term = -15

d = common difference = -15 - (-11) = 4

Thus,  

9th term = a + ( n - 1 )d

              = -15 + ( 9 - 1 )4

              = -15 + ( 4 x 8)

              = -15 + 32

              = 17

Hoe it helps

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Answer 2

Step-by-step explanation:

gave any further information AB289