What is the sum of 4.2 × 10^5 and 5.3 × 10^5? a 95 × 10^5 b 95 × 10^10 c 9.5 × 10^5 d 9.5 × 10^10

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.

The square pyramid has a volume of 441 cubic inches. what is the value of x? 1/7x is the height x is the base

Solve the equation using the zero-product property. -3n(7n - 5) = 0 a. 0, -5/7 b. -1/3, -5/7 c. -1/3, 5/7 d. 0, 5/7