Whats the quotient of 20 square root of z^6 ÷ square root of 16z^7 if z > 0

Which term best describes the association between variables a and b? no association a negative linear association a positive linear association a nonlinear association a scatterplot with an x axis labeled, variable a from zero to ten in increments of two and the y axis labeled, variable b from zero to one hundred forty in increments of twenty with fifteen points in a positive trend.

Factor the expression using gcf 9b+45

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