Can someone answer all the questions below and show ALL work?
https://www. lrhsd. org/site/handlers/filedownload. ashx?moduleinstanceid=4920&data id=7392&FileName=Algebra%202-Re view%20Packet. pdf

If your teacher tells you to do questions 6 through 19 in your math book for homework, how many questions is that

What is the next step in the given proof? choose the most logical approach. a. statement: m 1 + m 2 + 2(m 3) = 180° reason: angle addition b. statement: m 1 + m 3 = m 2 + m 3 reason: transitive property of equality c. statement: m 1 = m 2 reason: subtraction property of equality d. statement: m 1 + m 2 = m 2 + m 3 reason: substitution property of equality e. statement: 2(m 1) = m 2 + m 3 reason: substitution property of equality

Which situation is an example of an observational study?