A bags contains ninety-nine balls numbered from 1 to 99. How many balls must be randomly selected without repetition to guarantee that the two numbers of some pair of balls will have a sum of 100?

Steve is scuba diving near his home in maui. at one point he is 100 feet below the surface. represent this number with a negative number. if he descends another 5 feet, what negative number will represents his.

Yvaries inversely as x. y =12 when x=5. find y when x=4

Rewrite the equation x = 65 - 60p by factoring the side that contains the variable p.