As r varies the equation (r − a.· (r − b.= 0 defines a sphere. determine the center of this sphere when a = h 3, 5, 3 i, b = h 5, 9, 7 i.

Use the distance formula to find the distance between (-3,5) and (3,1)

Abag contains pieces of paper numbered from 5 to 9. a piece of paper is drawn at random. what is the theoretical probability of drawing a number less than 8?

A)a square brown tarp has a square green patch green in the corner the side length of the tarp is (x + 8) and the side length of the patch is x what is the area of the brown part of the tarpb)a square red placemat has a gold square in the corner the side length of the gold square is (x - 2) inches with the width of the red region is 4 in what is the area of the red part of the placemat