The slopes of the sides of a triangle are 3/4, -1/2, and 2. 1. Is the triangle a right triangle?

2. If so, explain how you know that it is a right triangle.

Which fraction below is equivalent to 10/12?

The sum of these consecutive integers is equal to 9 less than 4 times the least of the integer. find the three integers

I'm at a bookstore with $\$35$ in my pocket and a $20\%$-off coupon. what is the cost of the most expensive book i can buy with my money and the coupon? (assume that there are books of every possible price in the bookstore. it's a large bookstore! )