The table shows numbers with the ratio x : y? find the missing number?
x 1 15 225
y 4 ? 900

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.

Amass weighing 16 pounds stretches a spring 8/3 feet. the mass is initially released from rest from a point 2 feet below the equilibrium position, and the subsequent motion takes place in a medium that offers a damping force that is numerically equal to 1/2 the instantaneous velocity. find the equation of motion if the mass is driven by an external force equal to f(t)=cos(2t).

Two less than the quotient of a number and four is less than six. i need the inequality. a. x< 32 b. x< -32 c. x> 16 d. x> -16