Which pair of numbers are not opposites? Select one: a. 27 and |-27| b. 72 and -72 c. |7| and -7 d. 27 and -27

What number line represents the solution set for the inequality -1/2 greater than or equal to 4

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%)

Find the volume of the solid bounded by the plane z=0 and the paraboloid z=1-x^2 –y^2