A bag contains 5 white 6 red 3 purple and 4 yellow marbles. What is the theorical probalitu that the marble draw is red?

I'm confused on this could anyone me and show me what i need to do to solve it.

Proving the parallelogram diagonal theoremgiven abcd is a parralelogam, diagnals ac and bd intersect at eprove ae is conruent to ce and be is congruent to de

What is the difference between –12 and –5? what is the distance between –12 and –7 on a number line? units