Subtract: (11a++12) your answer should be in simplest form.

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?

Sam claims that cos x =sin y if x and y are congruent angels. is sam correct ?

If you could answer these your a life saver