Find the quotient: 15x^4y^2-30x^2y^3+45xy/5xy is when this quotient is divided by result is x^3y-2xy^2+3

The measure of one angle of an octagon is two times smaller that of the other seven angles. what is the measure of each angle?

The area of square garden is 300m squared. how long is the diagonal?

Janice determined there were 10 possible outcomes when tossing two coins and spinning a spinner numbered 1 through 6. what is the correct number? what might have been janice's error?