If x^2 = a and a > 0. what is x?

Me, prove a quadrilateral with vertices g(1,-1), h(5,1), i(4,3) and j(0,1) is a rectangle using the parallelogram method and a rectangle method.

Arecipe calls for 3 ounces of flour for every 2 ounces of sugar. find the constant of proportionality.

If the circumference of the circle is below 72, what is the length of ab (the minor arc)