Math, asked by phoenixgaming1905, 5 months ago

Find the sum of the first 22 terms of the AP : 8, 3, -2, . . .

Answers

Answered by Anonymous

1

Answer:

-979

Step-by-step explanation:

Sn= n/2 (2a+(n-1)d)

n=22, a=8, d= -5

Sn= 22/2 (2 (8)+(22-1)(-5))

Sn=11 (16+21 (-5))

Sn=11 (16-105)

Sn= 11 (-89)

Sn= -979

Previous Question

Next Question

Similar questions

Environmental Sciences, 2 months ago

define law of diminishing marginal utility...

Geography, 2 months ago

ty of the country.) The diverse population of Nepal is a valuable resource of the country. Can you explain how?

Math, 2 months ago

On what sum of money does the S. I. for 10 years at 5% become Rs. 1600. Rs. 3200 Rs. 320 Rs. 800 5.

Science, 5 months ago

when we place a magnetic compass near a current carrying wire than what kind of phenomenon would be observed ...

Math, 5 months ago

A box contains 11 cards numbered 1 to 11. What is the number of ways of choosing 5 cards from the box such that two of them are odd – numbered and remaining three are even – numbered.

Math, 9 months ago

If the roots of the equation x2 - 10x + k = 0 with variable 'x' are in the ratio 2 : 3, what is the value of 'k' ?

Science, 9 months ago

when two elements are brought together they are...

Math, 9 months ago

vaibhav can write 184 words on a page. How many words he can write on 138 such a pages...