8. A boat leaves port and sails in still water at 5.6 mph for 3.5 hours. The boat then turns at a 57 degree angle and sails at 4.9 mph for 4.25 hours.
a. If the boat turns and heads directly for port at 6 mph, how long will it take it to reach port?
b. At what angle will the boat have to turn to head directly back to port in part a?

d 25 pi/6

step-by-step explanation:

the diameter is 10 inches

the radius is 1/2 of the diameter or 5 inches

the area of the circle is

a = pi r^2

  = pi 5^2

  = 25 pi

the slice is 60 degrees of the entire circle.

60 degrees out of 360   60/360 = 1/6

the area of the slice is 1/6 of the circle

a slice = 1/6 a circle

a slice = 1/6 * 25 pi

there are 70 more legs than eyes at the dog show (196 – 126 = 70). dogs have two more legs than eyes, and humans have the same number of legs as eyes. thus 70 is twice the number of dogs at the show, so the number of dogs is half of 70, which is 35. to get the number of humans, subtract 35 from 63: 63 – 35 = 28.

step-by-step explanation:

7

step-by-step explanation: