Find a basis for the row space of aa, a basis for the column space of aa, a basis for the null space of aa, the rank of aa, and the nullity of aa. (note that the reduced row echelon form of aa is ⎡⎣⎢⎢⎢1000−40000100−4−4000−300⎤⎦⎥⎥⎥[ 1−40−40001−4−30000000000].)

The two square pyramids are similar. find the total volume of both pyramids if the ratio of their surface areas is 9/16

Plz ( true - false) all triangles have interior angles whose measure sum to 90.

Afootball quarterback has two more chances to throw a touchdown before his team is forced to punt the ball. he misses the receiver on the first throw 25% of the time. when his first throw is incomplete, he misses the receiver on the second throw 15% of the time. what is the probability of not throwing the ball to a receiver on either throw?