The area of a figure is 64 square centimeters. suppose the sides of the figure are doubled. what will be the new area of the similar figure?

What is the domain of the function f(x)=^9x

What is the value of x when x + 7 = 21?

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?