Arectangle initially has dimensions 6 cm by 7 cm. all sides begin increasing in length at a rate of 4 cm/s. at what rate is the area of the rectangle increasing after 22 s?

The physical fitness of an athlete is often measured by how much oxygen the athlete takes in (which is recorded in milliliters per kilogram, ml/kg). the mean maximum oxygen uptake for elite athletes has been found to be 60 with a standard deviation of 7.2. assume that the distribution is approximately normal.

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10

What is negative 3/9 times negative 2/8 ?