Which set of ordered pairs has point symmetry with respect to the orgin (0,0)
a. (9, 2), (-9,2)
b. (9,2), (-9,-2)
c. (9,2), (9,-2)
d. (9,2), (2,9)

The area of a 25-inch tv screen is 300 square inches. the area of a 40-inch tv screen is 768 square inches. the are of the smaller screen is what percent of the area of the larger screen?

Anna is constructing a line segment that is congruent to another segment ab. for the construction, which tool should be used to mesure segment ab

Evaluate the discriminant of each equation. tell how many solutions each equation has and whether the solutions are real or imaginary. x^2 - 4x - 5 = 0