How many different ways can four people: andy, betty, cindy, and doug, sit in a row at the opera if andy and betty must sit together?

1234567891011 match the reasons with the statements in the proof. given: j | | k m 1 = m 3 prove: l | | m 1. j||k, m∠3 = m∠1 if lines are ||, then corresponding angles are =. 2. m∠1 = m∠2 if alternate interior angles are =, then lines are ||. 3. m∠2 = m∠3 substitution 4. l||m given

The interior angles formed by the side of a hexagon have measures of them up to 720° what is the measure of angle a

There are 45 questions on your math exam. you answered 810 of them correctly. how many questions did you answer correctly?