Doug family buys 7 postcards while on vacation. Each postcard cost $0.25 including tax. How can Doug use what he knows whole number multiplication to check his answer

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

The volume of the sun is approximately 1 × 10^18 cu km, while the volume of jupiter is approximately 1 × 10^15 cu km. which of the following is true? a. the volume of jupiter is approximately one thousand times the volume of the sun. b. the volume of jupiter is approximately one hundred times the volume of the sun. c. the volume of the sun is approximately one thousand times the volume of jupiter. d. the volume of the sun is approximately one hundred times the volume of jupiter.

What is the value of the discrimination for the quadratic equation 0=×2+2+×2