Math, asked by prc91, 11 months ago

how many terms of the series 5 + 19/4 + 9/2 +..........will sum upto 51.

Answers

Answered by vishalbansal612

1

Answer:

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

51=n/2+2(5+(n-1)-1/4

102=n(5n-5)-1/4

Previous Question

Next Question

Similar questions

Math, 5 months ago

y=(xcocx)^x in chain rule...

Math, 5 months ago

Find 20% of Rs.500 ...

Physics, 5 months ago

A ship A is moving westwards with a speed of 10 km/h and a ship B, 100 km south of A is moving northwards with a speed of 10 km/h. the time after which the distance between then becomes the shortest in.

Computer Science, 11 months ago

computer language Fortran is used to solve scientific and mathematical problems true or false...

English, 11 months ago

Come back at seven o'clock change into complex sentence...

Math, 1 year ago

in an equilateral triagleABC , D is a point on BC such that BD =1/3BC .prove that 9AD²=7AB²...

Science, 1 year ago

distinguish between oxidation and reduction...

Math, 1 year ago

use the identities to evaluate:(97)2...