4) From the selection below, circle all the expressions that are differences of squares. Fact
9x2 - 4
x2 – 16
4x
- 6
6x2 – 24
25x2 -8
16x² - 1
please help

the correct answer is the second option

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 answer is a.

step-by-step explanation:

in three games of golf, alex shot two under par four times.

step-by-step explanation: