Complete the square 6v^2-12v-18=0 showing work

Askateboard ramp is in the shape of a right triangle what is the height of the ramp

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

Evaluate each expression. determine if the final simplified form of the expression is positive or negative -42 (-4)2 42