Consider the series 1/8 + 1/16 + 1/32 + 1/64 + 1/128 + . . .

Which expression defines Sn?

yes because there is exactly one y value for every x value

for function there can't be more than one value for every x value

h/o/e/s mad

step-by-step explanation:

si si si

answer:   28.56 feet (approx)

step-by-step explanation:

since, triangle abc has measure of angle c equal to 55 degrees, measure of angle abc equal to 90 degrees, and length of bc equal to 20 feet.

we have to find out the measurement of segment ab.

therefore, tan 55° =

but bc = 20 feet.

⇒ tan 55 ° =  

⇒ ab = 20 × tan 55 °

⇒ ab = 20 × 1.42814800674

⇒ ab = 28.5629601348   ≈ 28.56 feet

the first one is x^2+2x+2

the second one is x^2+4

the last one is x^2-4x+8