You spend $30.40 on 4 cds. each cd costs the same amount and is on sale for 80% of the original price. a. write and solve an equation to find how much you spend on each cd. let p represent the price you pay for each cd.

Let "p" be the price you pay for each CD's

Since 4 CDs cost 30.40, the price you pay for each CD (p) is calculated as = total price for all CDs/ number of CDs

So, the price you pay for each CD (p) = 30.40/4 = $7.60

Since you paid 80% of the original price of each CD = 7.60/0.8 = $9.50

The price you paid for each CD = $7.60 per CD

The original price for each CD = $9.50

just sum

10 + 10 = 20

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