It is possible to add a 2 X 2 matrix and a 2 X 2 matrix.

True
False

The sum of the speeds of two trains is 720.2 mph. if the speed of the first train is 7.8 mph faster than the second train, find the speeds of each.

Which of the following circles have their centers on the x-axis? check all that apply.

Solve the system of equations using the substitution method. {y=−3x+7x=−2y−16 enter your answers in the boxes.