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Mama L [17]
3 years ago
9

A student is standing a distance of 4 m from the school bell. If the student moves to a distance 20 m away, what fraction of the

original intensity of the bell’s sound will the student hear?
Mathematics
1 answer:
Neporo4naja [7]3 years ago
6 0

Answer:

Fraction=1/5=0.2

Step-by-step explanation:

If the student is 4m away from the school bell and moves 20m away, it means that he is 5 times more distant from the school bell and therefore should listen 5 times less, that is, 1/5 of the original sound.

Note: this as long as the initial environment conditions of 4m are the same at 20m

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Which of the following sets of ordered pairs is a function?
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Answer:

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Jane works twice as fast as her daughter Anna. If it takes 15 minutes to clean the kitchen together, how long would it take Anna
Sonbull [250]
Here, Twice fast means, she takes half time in doing same amount of work.
Let, Anna takes = 2t & Jane takes = t

It would be: 1/t + 1/2t = 1/15
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Hope this helps!
7 0
3 years ago
Give a big-o estimate for the number of operations (where an operation is an addition or a multiplication) used in this segment
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Here we do not have a scale, nor n is defined.  The number of operations is constant and known at 24.   So a variable is required to find the big-O estimate.
6 0
3 years ago
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