Which expression is equivalent 3/8(6+2r)+3/4x

In stage 2 farmers used the land primarily to grow food for their families and their small communities.

The blue segment below is a diameter of oo. what is the length of the radius of the circle?

The first atomic explosion was detonated in the desert north of alamogordo, new mexico, on july 16, 1945. what percentage of the strontium-90 ( yr) originally produced by that explosion still remains as of july 16, 2016?