Which expression shows the ASSOCIATIVE PROPERTY? 3 + a + b = a + 3 + b
3(ab) = (3a)b
(3 + a) + b = 3 + (a + b)
3 - a = 3 - b

Which of the following system of equation is not equal to the system of equations is not equal to the system of equations shown below

Answer this question, only if you know the answer. 30 points and brainliest!

Suppose you want just guess at the answers in a 5 question multiple-choice test. each question has 3 responses and only one is correct. what is the probability of getting two questions right just guessing? 20 points 0.3275 0.2753 0.7532 none of the above