Does anyone know the answer and how I should do this?

Danny draws a transversal, t, on two parallel lines ab and cd, as shown below: he makes the following table to prove that the alternate interior angles are equal: which is the missing justification? (6 points) corresponding angles formed by a transversal on parallel lines are supplementary. corresponding angles formed by a transversal on parallel lines are congruent. co-interior angles formed by a transversal on parallel lines are congruent. co-exterior angles formed by a transversal on parallel lines are congruent.

Twice the sum of a number and 4 is equal to three times the difference of the number and 7. find the number.

Divide. reduce the answer to lowest terms.5 2/3 ÷ 3 1/9