Use the quadratic formula. 2x^2-5x-9=0. enter the solutions, in simplified radical form, in the boxes x= or x=

The difference of 2 numbers is 21 and the quotient of the equation is 4 then what are the two numbers?

You paint a 1/2 of a wall in 1/4 hour. how long will it take you to paint one wall

The function a represents the cost of manufacturing product a, in hundreds of dollars, and the function b represents the cost of manufacturing product b, in hundreds of dollars. a(t) = 5t + 2 b(t) = 7t - 2t +4 find the expression that describes the total cost of manufacturing both products, a(t) + b(t). a. 7t^2 - 7t + 2 b. 7t^2 + 3 +6 c. 7t^2 + 7t - 6 d. 7t^2 - 3t + 6