Answer:
Step-by-step explanation:
0.61
Add 0.14 to both sides of this equation, obtaining r = 0.61.
(B). F(X)=2x^2+2x-4
-4 means it passes through -4 at the y axis
B and D have -4
graph passes thru x axis at -2 and 1
if you enter x = -2 or 1 in the formula
you get 0
it's not D because when you enter -2 or 1 for x
you don't get 0
you get 8 and -4
The series 1/5, 2/15, 4/45, 8/135... converges and sums up to 3/5
Consider the infinite geometric series
1/5, 2/15, 4/45, 8/135...
With first term, a=1/5
common ratio, r = ⅔
The series converge because the common ratio, |r|<1.
The sum to infinity of a geometric series, S= a/(1-r)
S= 1/5 ÷ (1-⅔) = 1/5 ÷ 1/3 = 3/5
Therefore, the geometric series 1/5, 2/15, 4/45, 8/135... sums up to 3/5.
15.6 feet
I have no time to explain
