Joan determined that the area of the circle below is 400 cm. Melinda says that Joan's solution is incorrect; she believes that the area is 100+ cm? Who is correct and why?
20 cm
59

Which matrix can be multiplied to the left of a vector matrix to get a new vector matrix ?

Evaluate the expression for the given value of the variable 7a - 4a for a =8

Agrid shows the positions of a subway stop and your house. the subway stop is located at (-5,2) and your house is located at (-9,9). what is the distance, to the nearest unit, between your house and the subway stop?