What is the value of the discriminate of the quadratic equation -1=5x^2-2x

7. the area of the playing surface at the olympic stadium in beijing isof a hectare. what area will it occupy on a plan drawn to a scaleof 1: 500?

The value of the expression 16-^3/4 8 1/8 -6 6 1/40 1/64

Four quarts of a latex enamel paint will cover about 200 square feet of wall surface. how many quarts are needed to cover 98 square feet of kitchen wall and 52 square feet of bathroom wall