What is the value of –7.94 + 2.13 – 4.65?

5x + 2 = 12 solve the following equation. then place the correct number in the box provided.

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?

The two cones below are similar. what is the height of the smaller cone?