What is the length of the diagonal?​

Let w=23 . what is the value of w + 45 ?

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 is the solution to the equation below? 3/x-2+6=square root x-2 +8