David drove for 3 hours at a rate of 50 miles per hour. for 2 hours at 60 miles per hour and for 4 hours at a rate of 70 miles er hour. what was his constant-speed for the whole journey?

Arunning track in the shape of an oval is shown. the ends of the track form semicircles. a running track is shown. the left and right edges of the track are identical curves. the top and bottom edges of the track are straight lines. the track has width 56 m and length of one straight edge 130 m. what is the perimeter of the inside of the track? (π = 3.14) 260.00 m 347.92 m 372.00 m 435.84 m

Use the elimination method to solve the systems of equations.choose the correct ordered pair. 7x+4y=39

About 9% of th population is hopelessly romantic. if 2 people are randomly selected from the population, what is the probability that at least 1 person is hopelessly romantic?