She got 49 problems right and 21 problems wrong what percentage did gina get right

Which formula finds the probability that a point on the grid below will be in the blue area? p(blue) = total number of squares number of blue squares number of blue squares p(blue) = total number of squares number of blue squares p(blue) = number of white squares

Use set buikder notation to represent the following set: {, -2, -1, 0}

Solve each quadratic equation by factoring and using the zero product property. 10x + 6 = -2x^2 -2