If a square matrix reduces to the identity matrix, what does that mean about the rows of the original matrix?

A. The rows are linearly dependent.
B. The rows are linearly independent.

If a baby uses 15 diapers in 2 days how many diapers will the baby use in a year

Pat listed all the numbers that have 15 as a multiple write the numbers in pats list

The sat and act tests use very different grading scales. the sat math scores follow a normal distribution with mean 518 and standard deviation of 118. the act math scores follow a normal distribution with mean 20.7 and standard deviation of 5. suppose regan scores a 754 on the math portion of the sat. how much would her sister veronica need to score on the math portion of the act to meet or beat regan's score?