The hypotenuse of a right triangular yard is 113 feet. One of the shorter sides of the yard is 15 feet. What is the length of the other side of the yard?

If the slope of one line equals the slope of another line then ? a) the two lines are intersecting lines b) the two lines are perpendicular lines c) the two lines are parallel lines d) the two lines always have very steep slopes

Which describes the difference between the graph of f(x)=x^2 and g(x)=-(x^2-2)

How do i simply this expression (quadratic formula basis) on a ti-84 or normal calculator?