A pair of slacks that sold for $17.75 is on sale for $14.91. What is the discount rate?

Which math sentence can be used to determine if the triangle is a right triangle?

1. find the area of the unshaded square 2. find the area of the large square 3. what is the area of the frame represented by the shaded region show

1) prove that 731^3−631^3 is divisible by 100 2) prove that 99^3−74^3 is divisible by 25