Answer: The speed is 105 miles/ hr and the direction of the train would be East if the girl is the frame of reference.
Step-by-step explanation:
Since we have given that
Speed of train = 100 miles per hour
Speed of girl = 5 miles per hour
Since the girl is moving towards the back of train.
So,it means train and girl are moving in opposite direction.
So, Relative speed would be

Hence, the speed is 105 miles/ hr and the direction of the train would be East if the girl is the frame of reference.
21
Turn 75%into a decimal 0.75 than multiply that by 28
W ÷ 9 = 9
w = 9 × 9
w = 81
YOU GET ALOT OF POINTS BY ANSWERING QUESTIONS, SELECTING BRAINLIEST, ETC.
To find the value of j, divide both sides of the equal sign of 7.2.
Answer: J= 12.95
5 because you have to divide -15 by -3 and yu get 5