A rectangle's length is seven times its width. The perimeter of the rectangle is one hundred sixty feet. What is the area of the rectangle?

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

You are making a battery for a science project. you have copper wire for your first electrode. you need to choose a conductor, a second electrode, and a device to plug into your battery. you have already chosen a lemon conductor. complete each statement below about the options that include a lemon conductor.

Consider the function represented by the equation 1/2 j + 1/4 k equals 3 which shows the equation written in function notation with j as the independent variable