The width of a rectangle measures (3s+t)(3s+t) centimeters, and its length measures (3s-9t)(3s−9t) centimeters. Which expression represents the perimeter, in centimeters, of the rectangle?

In the figure shown below, m < 40 and ab =8. which equation could be used to find x?

What are the solutions of the system? solve by graphing. y = x^2 + 3x + 2 y = 2x + 2

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?