You have a bag of silver coins, each coin weighing 17 ounces of silver. A merchant has a bag of silver coins, each weighing 11 ounces. You wish to pay the merchant 542 ounces of silver. a. How many 17-ounce coins should you give the merchant, and how many 11-ounce coins should the merchant give to you? b. What is the smallest amount of coins that can be exchanged in this transaction?

step-by-step explanation:

compare

c

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