A quadratic equation has exactly one real number solution. Which is the value of its discriminant. A:-1 C:1
B:0. D:2

The measure of one angle of an octagon is two times smaller that of the other seven angles. what is the measure of each angle?

Acabinmaker buys 3.5 liters of oat varnish the varnish cost $4.95 per liter what is the total cost of 3.5 liters

If 30 lb of rice and 30 lb of potatoes cost ? $27.60? , and 20 lb of rice and 12 lb of potatoes cost ? $15.04? , how much will 10 lb of rice and 50 lb of potatoes? cost?