Need answers can you please help

What is the value of x in the following equation. -x ^3/2 = -27

Describe a situation that you could represent with the inequality x< 17

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?