There are 7800 workers in the three main buildings downtown three hundred fewer people work in the second largest building than the largest building and 900 fewer people work in the smallest building than the largest building how many workers are in each building?

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?

Match the one-to-one functions with their inverse functions.

Solve the system of equations. 2x-2y=-4 and x+y=8. show work