Which side lengths represent the sides of a right triangle? A)1, 1, 2 B)2, 3, 5 C)3, 4, 5 D)5, 11, 13 E)5, 12, 15

Brian, chris, and damien took a math test that had 20 questions. the number of questions brian got right is 14 more than the number of questions chris got right. damien correctly answered 2 less than the number of questions chris answered correctly. if brian and damien have the same score, which statement is true?

Asphere has a diameter of 10 in. what is the volume of the sphere?

Solve the given system of equations. 2y= -x+9 , 3x-6= -15