Compute the unit rate. choose all that are correct. 1 2 mile in each 1 4 hour is a rate of 1 8 miles per hour. 1 2 mile in each 1 8 hour is a rate of 4 miles per hour. 1 5 mile in each 1 10 hour is a rate of 2 miles per hour. 1 2 mile in each 1 6 hour is a rate of 1 12 miles per hour.

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?