Which of the following are true about a compound? 1.It is made of only one element.

2.It is made of two or more elements represented by a chemical formula.

3.It contains elements that are chemically combined.

4.It contains elements that when combined form a new substance.

2 and 3

2, 3 and 4

1 and 3

1, 2, 3, and 4

The only way to identify an intercept is as an ordered pair. true false

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 linear inequality is represented by the graph?