Acar uses 25l of petrol to travel 280km. what is the rate of petrol usage in kilometres per litre?

When a rectangle is dilated, how do the perimeter and area of the rectangle change?

Hiroaki wants to find 3 3/4 - 7/8 explain why he must rename 3 3/4 to do the subtraction.

To solve the system of equations below, grace isolated the variable y in the first equation and then substituted into the second equation. what was the resulting equation? 3y=12x x^2/4+y^2/9=1