A rectangular poster board has an area of A square inches. The length of the poster board is 30 inches. Which equation represents, w, the width of the poster board in inches? w=A30 w=A−15 w=A−2(30) w=30A

B w=A-30

Step-by-step explanation:

Area - w = your answer.

(It's hard to explain btw)

Hope this helps! :)

P.S. Pleasss choose me as brainliest, I'm only in 5th grade but doing 6th/7th grade math. Anyways have a wonderful day! ;)

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

246

step-by-step explanation: