In a class of 25 students, 5 have a brother and 11 have a sister. There are 2 students who have a brother and a sister. What is the probability that a
a
student chosen randomly from the class has a brother and a sister?
а

Which fraction below is equivalent to 10/12?

Polygons efgh and e′f′g′h′ are shown on the coordinate grid: what set of transformations is performed on efgh to form e′f′g′h′? a. a translation 1 unit to the left followed by a 90-degree counterclockwise rotation about the origin b. a translation 1 unit to the right followed by a 90-degree counterclockwise rotation about the origin c. a 90-degree clockwise rotation about the origin followed by a translation 2 units to the right d. a 90-degree clockwise rotation about the origin followed by a translation 2 units to the left

What can you determine about the solutions of this system