Answer pls- i need help

What numbers are included in the set of integers? what numbers are not included?

Evaluate the expression. (9 + 5)(3 + 2)0

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?