10x+8-2x+x(to the 3rd power)+5 x+x+2x(to the 3rd power)+3x

Don't know how to find x given these segment lengths

What is the correlation coefficient between the variables? round to three decimal places. enter your answer in the box

Look at the figure below: triangle abc is a right triangle with angle abc equal to 90 degrees. the length of ac is 5 units and the length of ab is 4 units. d is a point above c. triangle adc is a right triangle with angle dac equal to 90 degrees and dc parallel to ab. what is the length, in units, of segment cd?