Your brother pulls his sled up a hill. Each minute he moves forward 20 feet, but he also slides backward 3 feet. Describe how you can determine the time he needs to pull his sled 130 feet forward.
Seven forward followed by seven backward steps moves him 17 x 7 = 119 feet forward
The next forward step takes him 20 feet forward to 139 feet
i need help with math
First, if you have a question, it is much better to put it in as a separate post in <Post a New Question> rather than attaching it to a previous question, where it is more likely to be overlooked.
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I hope this helps. Thanks for asking.
To determine the time it takes for your brother to pull his sled 130 feet forward, we can calculate the net distance covered by subtracting the distance slid backward from the distance moved forward each minute.
In this case, your brother moves forward 20 feet every minute, but he also slides backward 3 feet every minute. Hence, his net distance covered per minute would be 20 feet - 3 feet = 17 feet.
Now, to find the total time it takes for him to cover a distance of 130 feet, we can divide the total distance by the net distance covered per minute:
Time = Total distance / Net distance covered per minute
Time = 130 feet / 17 feet
Time ≈ 7.65 minutes
Therefore, it would take your brother approximately 7.65 minutes to pull his sled 130 feet forward.