If a+b = 7, and a² + b²=25

then ab = ?

The sum of two consecutive even integers is less than or equal to 90. What is the greatest possible pair?

A weather balloon is at an altitude where the temperature is 3º C. The balloon ascends 900 ft with a decrease in temperature of 5º C. The balloon then ascends again with a decrease in temperature of 3º C. What is the final temperature?

After driving 70 miles, Mel used 3.8 gallons of gasoline. After he drove a total of 140 miles, he had used 6.3 gallons of gasoline.

How many combinations of players can a coach have if he needs to pick 2 out of a total of 4?

You put $500 in your bank account. With an interest rate of 5%, how long will it take the account to reach $600?

To cover a rectangular region of her yard penny needs at least 170.5 square feet of sod. the length of the region is 15.5 feet. what are the possible widths of the region

Cynthia said that when you multiply three negative numbers the answer will be positive. Use these numbers to answer the questions: - 8.5, - 9, - 1.7, - 6.

How do you write 70% as a fraction in simplest form?

Home Depot wants to buy a new line of fertilizers. Manufacturer A offers a 21/13 chain discount. Manufacturer B offers a 26/8 chain discount. Both manufacturers have the same list price. What manufacturer should Home Depot buy from, show why?

So 984 plus 8 - 9 equals?