Which shows the correct substitution of the values a, b, and c from the equation -2 = -x + x2 - 4 into the quadratic formula?

Which of the statements about the graph of the function y = 2x are true? check all of the boxes that apply. the domain is all real numbers x because the exponent of 2 can be any real number when the x-values increases by 1 unit, the y-value multiplies by 2. the y-intercept is (0, 1). the graph never goes below the x-axis because powers of 2 are never negative. the range is all real numbers.

The ratio of the measures of the three angles in a triangle is 2: 9: 4. find the measures of the angels

In a class, there are 12 girls. if the ratio of boys to girls is 5: 4 how many boys are there in the class