Question

from a sequence that has two arithmetic means between -13 and 89.

a. -18,33,43,89
b.-18,-36,-72,-144
c.-13,21,55,89
d.-18,-81,-144

Answer 1

is it form or from ?

Answer 2

form

Answer 3

k wait

Answer 4

C

Answer 5

You have to find the arithmetic means BETWEEN \(\Huge{-13 , 89}\)
that is only in the third option

Answer 6

do you know what the sum means?

Answer 7

Yes ... sum means addition of given terms

Answer 8

whats it means when it says find sum of the first 90 terms

Answer 9

it means that you have to add all the 90 terms :

1 , 2 , 3 ................................... 90 .

you have to add them
1+2+3+4+5+..............+90

Answer 10

i do that but i still dont get the right answer

Answer 11

ok so ask this as a new question i will ans. u there

Answer 12

tag me there

Answer 13

ok