What is the average speed in kilometers per hour of a horse that gallops a distance of 15 km in a time of 30 min?

Aparallelogram has two side lengths of 5 units. three of its sides have equations y = 0, y = 2, y = 2x. find the equation of the fourth side.

Can someone answer it, and plot it, for 20 points and brainliest answer? p.s. they're the same ! : )

David must install fencing around a lot that is shaped like a right angle.the side of lot that runs east-west is 200 ft long.the side of the lot runs north-south is 125 ft long.calculate how many feet of fencing he will need to surround the entire lot.