Find the cosine for angle A

For what value of jn is mn parallel to kl

Students are given 3 minutes for each multiple-choice question and 5 minutes for each free-response question on a test. there are 15 questions on the test, and students are given 51 minutes to take it. how many multiple-choice questions are on the test?

1mile equals approximately 1.6 kilometers. which best approximates the number of miles in 6 kilometers?