Ben has a collection of quarters and nickels worth $5.35. if the number of nickels is 5 less than twice the number of quarters, find the number of each coin

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.

Find the constant of variation for the relation and use it to write an equation for the statement. then solve the equation.

Rhombus adef is inscribed into a triangle abc so that they share angle a and the vertex e lies on the side bc . what is the length of the side of the rhombus if ab=c, and ac=b.