A school building is perpendicular to its shadow which measures 9 meters. The distance from the tip of the shadow to the tip of the building is 41 meters. How high is the school building?

What is the value of the expression below? 148+(-6)| + |– 35= 7|

What is the absolute value of the complex number -4-sqrt2i

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?