Atrain traveling 412.5 miles in 5 1/2 hours. what is the unit rate? and at that rate, how far will the train travel in 8 hours?

Two parallel lines are crossed by a transversal.what is value of x

Does the problem involve permutations or? combinations? do not solve. the matching section of an exam has 4 questions and 7 possible answers. in how many different ways can a student answer the 4 ? questions, if none of the answer choices can be? repeated?

Sum is 17 and their difference is 3