Use the drop-down menus to complete each equation so the statement about its solution is true. 7 + 2x = 2(x - 1) + 4

Combine like terms to make a simpler expression 3z+z

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?

How can you find the mean absolute deviation (mad) for this set of data?