There are 10 desks in a room. determine whether 10 is prime or composite. if it is composite list all of the ways the desks can be arranged if they are in even rows.

Tom had a total of $220 and he spent $35 on a basketball ticket . what percent of his money did he have left?

Solutions for 2x+7 less than or equal to 3x-5

He weights of 2-pound bags of best dog food are approximately normally distributed with a given mean  and standard deviation  according to the empirical rule, what percentage of the bags will have weights within 3 standard deviations of the mean? 47.5%68%95%99.7%