What quadrant is -3+8i located in?

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.

Suppose i flip two identical coins. what is the probability that i get one head and one tail?

Prove that the value of the expression 7^8–7^7+7^6 is divisible by 43.