Jack and Li shared the driving during a trip across the country. For every 150 miles that Li drove, Jack drove 200 miles. If the total driving distance was 2800 miles, how far did each person drive?

Two planes leave an airport at the same time, one flying east, the other flying west. the eastbound plane travels 20 mph slower. they are 1600 mi apart after 2 hr. find the speed of each plane.

Complete the solution of the equation. find the value of y when x equals to 6 4x+y=20

Acentral angle measuring 160 degrees intercepts an arc in a circle whose radius is 4. what is the length of the arc the circle formed by this central angle? round the length of the arc to the nearest hundredth of a unit. a) 4.19 units b) 6.28 units c) 12.57 units d) 12.57 square units