What is the greatest possible value of a in the system of equations 5a + 2b = 0 and ab = -10? please don't answer unless you have the correct answer

Acircle has a circumference of 28.36 units what is the diameter of the circle

Heather is writing a quadratic function that represents a parabola that touches but does not cross the x-axis at x = -6. which function could heather be writing? fx) = x2 + 36x + 12 = x2 - 36x - 12 f(x) = -x + 12x + 36 f(x) = -x? - 12x - 36

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