Use your knowledge of Combining Like Terms to simplify the following expressions. 1) 2p + 5p =

2) 7 + 13m – 4 =

3) 9k – 10 + 11k – 6 =

4) 5x2 – 6x + 7x3 =

5) Are -42xy and 9xy Like Terms? Explain.

6) Are 3n5e2 and 8n2e5 Like Terms? Explain.

Reflect the point (7,0) across the y-axis

Given: lines a and b are parallel and line c is a transversal. prove: 2 is supplementary to 8 what is the missing reason in the proof? statement reason 1. a || b, is a transv 1. given 2. ∠6 ≅ ∠2 2. ? 3. m∠6 = m∠2 3. def. of congruent 4. ∠6 is supp. to ∠8 4. def. of linear pair 5. ∠2 is supp. to ∠8 5. congruent supplements theorem corresponding angles theorem alternate interior angles theorem vertical angles theorem alternate exterior angles theorem

Which two undefined geometric terms always describe figures with no beginning or end?