The sum of two numbers is 21. the first number is 2/5 of the second number. what are the numbers?

The manufacturer of a new product developed the following expression to predict the monthly profit, in thousands of dollars, from sales of the productwhen it is sold at a unit price of x dollars.-0.5x^2 + 22x - 224what is represented by the zero(s) of the expression? a. the profit when the unit price is equal to 0b. the unit price(s) when the profit is equal to 0c. the profit when the unit price is greatestd. the unit price(s) when profit is greatest

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10

Using only odd number for numerators write two different subtraction problems that have a difference of 3/4