Michael’s age is three more than twice Ashleigh‘s age. The sum of their age is 18. If M represents Michael‘s age and a represents Ashley‘s age, which system of equation represents the statements above?

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.

Given the expression (7 ? 4i) ? (2 + 6i), perform the indicated operation and write the answer in the form a + bi.

Simplify the following expression 48^1/2