Aquadrilateral has two consecutive angles that measure 90 degrees each

Draw a tape diagram to represent each situation.for some of the situations,you need to decide what to represent with a variable andre bakes 9 pans of brownies.he donates 7 pans to the school bake sale and keeps the rest to divide equally among his class of 30 students

The difference of three and the reciprocal of a number is equal to the quotient of 20 and the number. find the number.

The width of a rectangle is half as long as the length. the rectangle has an area of 18 square feet. what are the length and width of the rectangle?