what is the counter example of "if a plane intersects a right cylinder, the cross-section is a circle" please help i really need it

Asequence {an} is defined recursively, with a1 = 1, a2 = 2 and, for n > 2, an = an-1 an-2 . find the term a241

Describe the relationship between the angles of similar triangles and the sides of similar triangles

Adj has a total of 1075 dance and rock songs on her system. the dance selection is 4 times the size of the rock selection. write a system of equations to represent the situation.