a car travels at a constant speed. the car travels 180 miles in 3 hours. jayesh writes the incorrect equation 60y=x to show the relationship between x the number of hours and y the distance this car travels in miles. explain why jayesh's equation is incorrect . ​

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?

Solve 3x-18=2y and 5x-6y=6 by elimination show work

Martha is training for a duathlon, which includes biking and running. she knows that yesterday she covered a total distance of over 55.5 miles in more than than 4.5 hours of training. martha runs at a speed of 6 mph and bikes at a rate of 15.5 mph.