Is the number 39 a prime or composite

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?

What is 0.368,0.380,0.365,and 0.383 in order from least to greatest

Ebert used to make $22 an hour, but got a 10% raise. how much more will he make in a 40 hour work week with raise?