The difference between the square roots of a number is 30. what is the number? explain.

What is the slope of the line that contains the points (4,8) and (9,8)? what type of line is it?

If 20% of a number is 35, what is 50% of that number?

The rectangle shown has a perimeter of 108 cm and the given area. its length is 6 more than five times its width. write and solve a system of equations to find the dimensions of the rectangle.