Suppose the probability that a household owns a pet is 0.45. (We can assume one house owning a pet is independent of the others.) Suppose we looked at two houses on a street, the Smiths and the Millers. What is the probability that the Smiths and the Millers both have a pet

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?