A hiker is climbing down a valley. He stops for a water break 4 times. Between each break, he descends 15 meters. How many meters did he descend?
Ju Chan answered the question by writing the following:
4(−15) meters = −60 meters.
Which word in the problem indicates that a negative number shoA hiker is climbing down a valley. He stops for a water break 4 times. Between each break, he descends 15 meters. How many meters did he descend?
Ju Chan answered the question by writing the following:
4(−15) meters = −60 meters.
Which word in the problem indicates that a negative number should be used?
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Answer:
descends
Step-by-step explanation:
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A hiker is climbing down a valley. He stops for a water break 4 times. Between each break, he descends 15 meters. How many meters did he descend?
Ju Chan answered the question by writing the following:
4(−15) meters = −60 meters.
The word in the problem indicates that a negative number should be used is "descends".
- When a hiker is climbing down a valley, he is being displaced from one position to another.
- According to the question, he descends between his breaks by 15 m. This means that he moves 15 meters down the valley between every break.
- Since he is moving down the valley and the displacement between the ground level and him is decreasing, a negative sign is used.
- As he stops for water breaks 4 times, the (-15) is multiplied by 4.
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