Two train cars collide as shown. After the collision, they lock together. What is the mass of train car "B"? HINT: You will have to first find the final mass of the train cars together and then determine the mass of car B.

The table shows the total distance that myra runs over different time periods. which describes myra’s distance as time increases? increasing decreasing zero constant

Find the value of x for which the lines are parallel.

Sanya noticed that the temperature was falling at a steady rate of 1.4 degrees every hour from the time that she first checked her outdoor thermometer. by 6 a.m., the temperature had fallen 21 degrees. which expression can you use to find how many hours earlier she had first checked the thermometer?