Evaluate if a=4&b= 7 10 + (b − a) • 5

Using the side-splitter theorem, daniel wrote a proportion for the segment formed by luke segment de. what is ec?

Aregular pentagon with a perimeter of 21 inches is dilated by a scale factor of 5/3 to create a new pentagon. what is the perimeter of the new pentagon?

Two cars which are 40 miles apart start moving simultaneously in the same direction with constant speeds. if the speed of the car which is behind is 56 mph and the speed of the other car is 48 mph, how many hours will it take for the car which is behind to catch up the car ahead of it?