Question

Find the 15th term , whose 5th term is 29 and 15th term is 79 . and also find the 55th term. give me in detailed pls

Answer 1

Answer:

value of 15th term is 79 and value of 55th term is 279.

Answer 2

Step-by-step explanation:

They have given that 5th term is 29 and 15th term is 79.

therefore a5=29

a+4d=29................(1)

and

a15=79

a+14d=79...............(2)

subtract equation (1) and (2)

a+4d=29

a+14d=79

- - -

_________

0 -10d=-50

d= -50/-10

d=5

therefore put d=5 in equation (1)

a+4d=29

a+4×5=29

a+20=29

a=29-20

a=9

therefore a15=?

a15=a+14d

a15=9+14×5

a15=9+70

a15=79

therefore a15=79

and a55=?

a55=a+54d

a55=9+54×5

a55=9+270

a55=279

This is the answer