Neville says that ALL equilateral are isosceles triangles, but that NOT all isosceles triangles are also equilateral. Is Neville correct? Explain why or why not. Use models to represent your thinking.

X+ y = 5 ; x - y =3 solve using linear combination

Compare the following pair of numbers a and b in three ways. a. find the ratio of a to b. b. find the ratio of b to a. c. complete the sentence: a is percent of b. a=120 and b=340 a. the ratio of a to b is . b. the ratio of b to a is . c. a is nothing percent of b.

Find the solution on the interval [0, 2pi)