8. In the diagram shown, line m is parallel to line n. They are crossed by transversals r and s. Finally, r and s are perpendicular to each other. It is known that mABE =126° as shown.

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?

Which term best describes the association between variables a and b

How do you find the circumfrance of a circle?