What is the slope of a line perpendicular to the line whose equation is
4x−10y=20. Fully reduce your answer.

The equation x2 – 1x – 90 = 0 has solutions {a, b}. what is a + b?

The vertices of a triangle are a(7,5), b(4,2), c(9,2). what is m

Moira has a canvas that is 8 inches by 10 inches. she wants to paint a line diagonally from the top left corner to the bottom right corner. approximately how long will the diagonal line be?