The equation of a circle whose center is at (1,2) and radius is 5 is

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

Is a square always, sometimes, or never a parallelogram

Astudent must have an average on five test that is greater than it equal to 80% but less than 90% to receive a final grade of b. devon's greades on the first four test were 78% 62% 91% and 80% what range if grades on the fifth test would give him a b in the course? ( assuming the highest grade is 100%)