How many terms are there in a geometric series if the first term is 7, the common ratio is 2, and the sum of the series is 105? hint: (image attached below)  r ≠ 1, where a1 is the first term and r is the common ratio. options a) n = 3 b) n = 4 c) n = 5 d) n = 6

a box 3 3/4 feet long or 4+ feet.

step-by-step explanation:

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