The coefficient of determination resulting from a particular regression analysis was 0.85. what was the correlation coefficient, assuming a positive linear relationship

Its due ! write an equation in which the quadratic expression 2x^2-2x 12 equals 0. show the expression in factored form and explain what your solutions mean for the equation. show your work.

Express the following as a function of a single angle. cos(60) cos(-20) - sin(60) sin(-20)

Which graph represents the equation y =4x