Solve the system of equations 6x-3y=12 and 5x-5y=−15 by combining the equations. ? (6x -3y = 12)
? (5x -5y = -15)
6x -3y= 12
5x -5y=−15

?x + ?y = ?

fill in the "?'

Figure abcd is a parallelogram. if point c lies on the line x = 2, what is the y-value of point c

The table below shows the height of a ball  x  seconds after being kicked.  what values, rounded to the nearest whole number, complete the quadratic regression equation that models the data? f(x)  =  x2  +  x  +  0based on the regression equation and rounded to the nearest whole number, what is the estimated height after 0.25 seconds?   feet

The trigonometric ratios sine and secant are reciprocals of each other