I need help asap A triangle has the side lengths of 2y, 3y - 2, and 5y -4. The perimeter is 54. Write an equation and solve it for y. Use your answer to compute the value of the three sides. Select all the correct answers. Group of answer choices

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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

What number should be added to the expression x^2+3x+ in order to create a perfect square trinomial? 3/2 3 9/4 9

If square root x = -7, then x= -49 true or false