We often hear "Practice makes perfect" or "Practice makes better". Give reasons why the relationship might not be stronger between hours of practice and points per game.

Find the solution of system of equation y= x-4 y=4x+2

The number of nails of a given length is normally distributed with a mean length of 5.00 in, and a standard deviation of 0.03 in. find the number of nails in a bag of 120 that are less than 4.94 in. long.

Is the product of two rational numbers irrational or rational? first, make a hypothesis by multiplying two rational numbers. then, use variables such as x=a/b and y=c/d and the closure property of integers to prove your hypothesis.