The basic probability formula is p(a)=number of succesful outcomes/number of possible outcomes. what does p(a) mean?

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

Arace is 10 kilometers long. markers will be placed at the beginning and end of the race course and at each 500 meter mark. how many markers are needed to mark the course for the race?

The first triangle is dilated to form the second triangle. select true or false for each statement. statement true false the scale factor is 0.625. the scale factor is 1.6. a right triangle with a side length of .5. an arrow points to a larger right triangle with a side length of .8