The ratio of boys to girls is 5 to 7 there are 45 boys in the school play how many girls are in the play

In the diagram, gef and hef are congruent. what is the value of x

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?

What is the missing reason in the proof? segment addition congruent segments theorem transitive property of equality subtraction property of equality?