4. Find an equation for the nth term of the arithmetic sequence.
-20, -16, -12, -8, ... (2 points)
A an = -20 x 4(n - 1)
B an = -20 + 4(n - 1)
C an = -20 + 4(n + 2)
D an = -20 + 4(n + 1)

126.66 m²

step-by-step explanation:

the pertinent area formula is a = πr², where r is the radius.

here, a = π(6.35 m)² = 40.32π, or approximately 126.66 m²

if the probability is 1/12, 75 people will receive a $25 gift card

step-by-step explanation:

hello from mrbilldoesmath!

answer:

(7 x + 6 y) (49 x^2 - 42 x y + 36 y^2)

discussion:

the trick is to recognize that 343 = 7^3 and 216 = 6^3 and, in general,

a^3 + b^3 =   (a + b) (a^2 - a b + b^2).

in our case

343x^3+216y^3   =   (7x)^3 + (6y)^3

so take a = 7x and b = 6y in the above equation to get the answer.

you,

mrb