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Sladkaya [172]
3 years ago
14

On the first day of​ June, there were about 17.71 h of daylight in a city. Five months​ later, there were about 5.30 h of daylig

ht. What was the percent​ decrease?
Mathematics
1 answer:
Andru [333]3 years ago
7 0

Answer:

Percentage increases and decreases, are found by setting the problem up proportionally.

 

You are trying to find what percentage of 17.37 is 8.30 first.

 

so What %/100 = 8.30/17.37

 

Now define a variable:

 

Let x = What%  

 

x/100 = 8.30/17.37

17.37x = 830

x = 830/17.37

x ≈ 47.78

 

8.30 is approximately 47.78% of 17.37, so the percentage decrease is 100% - 47.78% = 52.22%

The percentage decrease is approximately 52.22%

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<h3>How to determine the height</h3>

From the information given, we have:

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To determine the height of the elevator, let's use the tangent identity

We have that;

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Learn more about angle of elevation here:

brainly.com/question/19594654

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