Use substitution to solve the system of equations below. input your answer for x.

x + 3y = 16
2x - y = 4

Find dy/dx using implicit differentiation ln(20+e^xy)=y

How do you write a paragraph proof to prove that the corresponding angles shown are congruent

Which statement is true about the extreme value of the given quadratic equation? a. the equation has a maximum value with a y-coordinate of -21. b. the equation has a maximum value with a y-coordinate of -27. c. the equation has a minimum value with a y-coordinate of -21. d. the equation has a minimum value with a y-coordinate of -27.