Aand b and n x n matrices such that ab = 0. prove that if a is invertible then b is not invertible.

Name each raycalculation tip: in ray "ab", a is the endpoint of the ray.

1jessica's home town is a mid-sized city experiencing a decline in population. the following graph models the estimated population if the decline continues at the same rate. select the most appropriate unit for the measure of time that the graph represents. a. years b. hours c. days d. weeks

Awasher and a dryer cost $701 combined. the washer costs $51 more than the dryer. what is the cost of the dryer?