A chemist needs a 20% solution of alcohol. How many liters of 15% solution should be added to 4 liters of 40% solution to get a 20% solution?

If the discriminant if a quadratic equation is 4 which statement describes the roots?

(10. in the figure, a aabc is drawn tocircumscribe a circle of radius 3 cm ,such thatthe segments bd and dc are respectively oflength 6 cm and 9 cm. find the length ofsides ab and ac.

Graph the system of equations. {6x−4y=−244x−8y=−32 use the line tool to graph the lines.