The integer -3 would best represent which of these events? i. you gain 3 pounds. ii. you set your clock 3 hours ahead. iii. you use 3 gallons of gas. i only i & iii iii only ii & iii

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?