Answer:
1st one
Step-by-step explanation:

Answer:
1/5
Step-by-step explanation:
4/8-3/10=1/5
15, median is the number in the middle, (i.e. median of 3, 4, 8, 9, 10, is 8.)
Answer:
When two lines are cut by a transversal, the pairs of angles on either side of the transversal and inside the two lines are called the alternate interior angles . If two parallel lines are cut by a transversal, then the alternate interior angles formed are congruent