Answer:
1/6 or one sixth
Step-by-step explanation:
Let

where we assume |r| < 1. Multiplying on both sides by r gives

and subtracting this from
gives

As n → ∞, the exponential term will converge to 0, and the partial sums
will converge to

Now, we're given


We must have |r| < 1 since both sums converge, so


Solving for r by substitution, we have


Recalling the difference of squares identity, we have

We've already confirmed r ≠ 1, so we can simplify this to

It follows that

and so the sum we want is

which doesn't appear to be either of the given answer choices. Are you sure there isn't a typo somewhere?
Answer:
kk
Step-by-step explanation:
9/15 becomes 90/15 but now u have a point on ur answer so it would be .6 as 15 times 6 equals 90
Answer:
8,16,24,32
Step-by-step explanation: