Which pair of fractions shows 2/5 and 3/10 converted with their least common denominator (lcd)? a)4/10 and 6/20 b)4/10 and 3/10 c)6/15 and 8/15 d)20/50 and 15/50

Which undefined geometric term is described as a location on a coordinate plane that is designed by an ordered pair (x,y) ?

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?

20.ju inces. which ordered pair is a viable solution if x represents the number of books he orders and y represents the total weight of the books, in ounces? (-3,-18) (-0.5, -3) (0,0) (0.5, 3)