The color of paint used to paint a race car includes a mixture of yellow and green paint. scotty wants to lighten the color by increasing the amount of yellow paint 30%. if a new mixture contains 3.9 liters of yellow paint, how many liters of yellow paint did he use in the previous mixture?

Solve the system of equations. y= 2x y= x^2 - 15

Atheater wants to build movable steps that they can use to go on and off the stage. they want the steps to have enough space inside so they can also be used to store props. how much space is inside the steps?

(c) the diagram shows the first three shapes of a matchsticks arrangement.first shape = 3second shape = 5third shape = 7given m represents the number of matchstick used to arrange the n'th shape.(i) write a formula to represent the relation between m and n. express m as the subjectof the formula.(ii) 19 matchsticks are used to make the p'th shape. find the value of p.