Question

S=rl-a/r-1

Answer 1

what is the question ?

Answer 2

Is this a sum of a geometric series?

Answer 3

S=rl-a/r-1 solve a

Answer 4

as in a literal equation? Rearrange so that the answer looks like a= ??

Answer 5

the sum of Geometric series is ;
S = a(r^n-1)/(r-1)

Answer 6

S = (rL -a) / (r-1)

S(r-1) = (rL -a)

rS - S = rL - a

rS -rL =S - a

a= S-r( S-L)

Answer 7

it is a manipulating literal equation

Answer 8

are you sure

Answer 9

that is the answer

Answer 10

ya

Answer 11

ok thank you

Answer 12

My Pleasure

Answer 13

how anout this equation this is also a manipulating equation

Answer 14

l=a+(n-1)d solve for n

Answer 15

please help

i am just reviewing my self to fresh my mind

Answer 16

please

Answer 17

l=a+nd -ld => n=(l(1+d)-a)/d