Find the slope of the line through the points (-1,-3) and (-1,7). //< slope is 5// what is the slope of the line that is perpendicular to this line?

Which equation results from adding the equations in this system? x+6y=9 and -x+2y=-15

The diameter of the moon is about 3500 km. approximate the surface area of the moon using the formula for the surface area of a sphere, s = 4? r^2. write your answer in scientific notation.

Find the product. type your answer in the space provided. use / for a fraction bar (example: 1/2) and ^ for an exponent (example: x^5). do not put spaces in your answer. (x -1 y 5)^2 · (2xy -2)^5