20. Complete the paragraph proof. (5 points)
Given: 21 and 22 are supplementary, and 22 and 23 are supplementary.
Prove: 21 - 23
By definition of supplementary angles, mZ1 + m2 2 = (a) and m2 + m23 = (b).
Then, mZ1 + m2 = m 22+ m23 by the
Property (c). Subtract mZ2 from each
side. You get mZ1 = (d), or 21 - (e).

Paint color preference children adults total 0.6 0.77 liked new paint color disliked new paint color 0.4 0.15 0.23 total 1.0 1.0 1.0 which value for x completes the conditional relative frequency table by column?

The rectangle on the right is the image of the rectangle on the left. what transformation would result in this image? reflection rotation translation dilation

Quick! a survey of 57 customers was taken at a bookstore regarding the types of books purchased. the survey found that 33 customers purchased mysteries, 25 purchased science fiction, 18 purchased romance novels, 12 purchased mysteries and science fiction, 9 purchased mysteries and romance novels, 6 purchased science fiction and romance novels, and 2 purchased all three types of books. a) how many of the customers surveyed purchased only mysteries? b) how many purchased mysteries and science fiction, but not romance novels? c) how many purchased mysteries or science fiction? d) how many purchased mysteries or science fiction, but not romance novels? e) how many purchased exactly two types of books?