A contractor is building a small rectangular room for a new house. The length of the room is 4 meters more than three times its width.
The value of the area of the room (in square meters) is 7 more than the value of the perimeter of the
room (in meters).
How many meters is the width of the room?

1/3(x-10)=-4 solve for x with steps

Achemist has 200 ml of a 10% sucrose solution. she adds x ml of a 40% sucrose solution. the percent concentration, y, of the final mixture is given by the rational function: the chemist needs the concentration of the final mixture to be 30%. how many milliliters of the 40% solution should she add to the 10% solution to get this concentration?

Aline parallel to a triangle's side splits ab into lengths of x - 5 and x + 2. the other side, ac, is split into lengths of x and x + 12. what is the length of ac? a) 12 b) 24 c) 36 d)