Parallelogram ABCD is a rectangle. Which statements are true? Select each correct answer. m∠ABX=m∠CBX 2AX=BD BC=CX AD⎯⎯⎯⎯⎯⊥CD⎯⎯⎯⎯⎯⎯ A) m∠ABX=m∠CBX    B) 2AX=BD    C) BC=CX     D) AD⎯⎯⎯⎯⎯⊥CD⎯⎯⎯⎯⎯⎯

The equation respenting the left table is

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

Using the returns shown above, calculate the arithmetic average returns, the variances, and the standard deviations for x and y. g