How many times does 255 go into 375

Emma will roll two number cubes labeled 1 through 6. she will record the sum of the two numbers after each roll. she will roll the two cubes 540 times. how many times should emma expect the sum to equal 5?

Sketch one cycle if the cosine function y=2cos2theta

Me complete this proof! prove that a quadrilateral is a square. me with the steps for this proof.