Solve for x. use the completing the square method. x² + 8x = 7 x=−8±√23 x=−4±√23 x=−4±√7 x=−8±√7

How do you use the additive inverse to evaluate an expression that uses subtraction in a full sentence

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.

How to choose the sign of the radical in the denominator of the formula for the distance from a point to a line.