An isosceles triangle has base angles that each measure 42*. which equation can be used to find z, the measure of the third angle of this isosceles triangle in degrees?

a) 84 + 2z = 180
b) 84 + z = 180
c) 42 + 2z = 180
d) 42 + z = 180

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

()1. how do you find range? 2.the following set of data is to be organized into a histogram. if there are to be five intervals on the graph, what should the length of each interval be? 30, 34, 23, 21, 27, 25, 29, 29, 25, 23, 32, 31

Me. i can't figure out this question. give an explanation too. .