10. what is the simplified form of v27 - v48?

What aspects of lines have to be diffrent

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?

The collection of beautiful oil paintings currently on display at an art gallery well defined; set not well defined; not a set