What is the size of the matrix resulting from [4 -1 0]*[2 1 0 -3 -7 2 1 -5 2]

What is the distance between (–2 1/2,-3) and (1, –3)?

Asphere has a diameter of 10 in. what is the volume of the sphere?

Astore sells two types of radios. one type sells $87 and the other for $119. if 25 were sold and the sales were $2495, how many of the $87 radios were sold a) 5 b) 20 c) 15 d)10