Prove that there exists a unique prime number of the form n2 - 1, where n is an integer that is greater than or equal to 2.

Convert 6,250 pounds to tons in mixed fraction form.

The ratio of men to women working for a company is 5 to 4. If there are 75 men working for the company, what is the total number of employees?

A data analyst wants to set up a hypothesis test to determine if the mean number of courses taken in a college semester is different for freshmen, versus sophomores, versus juniors, versus seniors.

How do you show 4/8!

The sum of two numbers is 55 and the difference is 21 . What are the numbers?

A rate in which the two quantities are equal but different units is called a what

Medicare enrollees pay very little for A. Part A-hospital care B. part B-outpatient care and physician services C. Part D-prescription drug coverage D. All of the above

What's is 7x90 it not hard it's not easy it medium

Martin charges $10 for every 5 bags of leaves he rakes. Last weekend, he rakes 24 bags of leaves. How much money did he earn?

A customer left a 66.00$ for a bill that is 9nly 55.00$. What is the tipped amount?