Mathematics, 11.11.2020 19:00 zoieihazel
A train is traveling from City A to City B, a distance of 320 miles. The graph below shows the number of miles, y , the train travels as a function of the number of hours, x , that have passed on its journey. The train travels at a constant speed for the first four hours of its journey and then slows down to a constant speed of 48 miles per hour for the remainder of its journey.
a. How long will it take the train to reach its destination?
b. If the train had not slowed down after 4 hours, how long would it have taken to reach its destination?
c. Suppose after 4 hours, the train increased its constant speed. How fast would the train have to travel to complete the destination in 1.5 hours?
Answers: 1
Mathematics, 21.06.2019 20:30
Ming says that 0.24 > 1/4 because 0.24= 2/4. which best explains mings error
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Mathematics, 21.06.2019 21:40
The number of chocolate chips in a bag of chocolate chip cookies is approximately normally distributed with a mean of 12611261 chips and a standard deviation of 118118 chips. (a) determine the 2626th percentile for the number of chocolate chips in a bag. (b) determine the number of chocolate chips in a bag that make up the middle 9696% of bags. (c) what is the interquartile range of the number of chocolate chips in a bag of chocolate chip cookies?
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Mathematics, 21.06.2019 21:50
Desmond wants to sell his car that he paid $8,000 for 2 years ago. the car depreciated, or decreased in value, at a constant rate each month over a 2-year period. if x represents the monthly depreciation amount, which expression shows how much desmond can sell his car for today? \ 8,000 + 24x 8,000 - 24x 8,000 + 2x 8,000 - 2x
Answers: 3
A train is traveling from City A to City B, a distance of 320 miles. The graph below shows the numbe...
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