A small plane flew 517.5 miles in 2.5 hours with the wind. Then on the return trip, flying against the wind, it traveled only 287.5 miles in 2.5 hours. What were the wind velocity and the speed of the plane? (Note: The "speed of the plane" means how fast the plane would be flying with no wind.)

This is so harddd! solve. 1 + 1 = solve 4 + 4 = solve 3 x 3

Two angles are complementary. the larger angle is 36 more than the smaller angle. what is the measure of the larger angle?

Circle a has a diameter of 7 inches, a circumference of 21.98 inches, and an area of 38.465 square inches. the diameter of circle b is 6 inches, the circumference is 18.84 inches, and the area is 28.26 square inches. part a: using the formula for circumference, solve for the value of pi for each circle. (4 points) part b: use the formula for area and solve for the value of pi for each circle. (4 points)