Which statement is always true?
a. linear pairs of angles are congruent
b. vertical angles are supplementary
c. adjacent angles are complementary
d. adjacent linear pairs of angles are supplementary never mind xd i figured it

Given the system of equations presented here: 2x + 4y = 14 4x + y = 20 which of the following actions creates an equivalent system such that, when combined with the other equation, one of the variables is eliminated? multiply the second equation by â’4 to get â’16x â’ 4y = â’80 multiply the second equation by â’1 to get â’4x â’ y = â’20 multiply the first equation by 2 to get 4x + 8y = 28 multiply the first equation by â’1 to get â’2x â’ 4y = â’14

Which of the following is the maximum value of the equation y=-x^2+2x+5 a. 5 b. 6 c. 2. d. 1

What is the value of the discrimination for the quadratic equation 0=×2+2+×2