The temperature in Minnesota was -8 F one day. On the same day, the temperature was 12 F higher in Indiana. What was the temperature in Indiana that day?

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?