If you were going to lay carpet in a rectangular room that had dimensions 10ft by 13ft, how much carpet would you need to buy?

The center of the circumscribed circle lies on line segment and the longest side of the triangle is equal to the of the circle.

Solve for x and y: 217x + 131y = 913; 131x + 217y = 827

The management of a supermarket wants to adopt a new promotional policy of giving a free gift to every customer who spends more than a certain amount per visit at this supermarket. the expectation of the management is that after this promotional policy is advertised, the expenditures for all customers at this supermarket will be normally distributed with a mean of $95 and a standard deviation of $20. if the management wants to give free gifts to at most 10% of the customers, what should the amount be above which a customer would receive a free gift?