Which formula can be used to sum the first n terms of a geometric sequence ? Sn = a1(1-r/1-r^n)

Sn = a1(1-r^n/1-r)

S = a1/1-r

S = (a1/1-r)^n

what does muffins have to do with anything?

step-by-step explanation:

x = ± 6i

step-by-step explanation:

x^2 = -36

take the square root of each side

sqrt(x^2) = sqrt(-36)

we know sqrt(ab) = sqrt(a) sqrt(b)

x = ±sqrt(36) sqrt(-1)

we know that sqrt (-1) = i

x = ± 6i

he has now walked a total of what?

if i know what this is maybe i can

step-by-step explanation: