More than 340 million people visit theme parks each year. Do you think it is because of the roller coasters? You can find 624 roller coasters at theme parks in the United States. The fastest coaster can reach 128 mph! If you want to learn about the roller-coaster riding habits of people, which is the best statistical question you could ask those leaving an amusement park?
Did you ride a roller coaster today?
How fast is the coaster you rode today?
How many times did you ride a coaster today?
How many roller coasters are there at this park?

point a is the center of this circle.

the ratio of the lengths of (ef/bc) and (ad/ih) is 2: 1.

step-by-step explanation:

what "following statement"?

step-by-step explanation:

a

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