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Salsk061 [2.6K]
2 years ago
10

In a P.7 class, 20% of the boys were absent for the Mock Examinations, of the remainder of the boys were present Find the fracti

on of the girls in the class.​
Mathematics
1 answer:
vladimir1956 [14]2 years ago
7 0
Fine the fraction of the girls class absent examination
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<h3>Answer:  Approximately 23.0 cm</h3>

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Work Shown:

a = 20.3

b = unknown

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Apply the pythagorean theorem to find b

a^2 + b^2 = c^2

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b^2 = 942.49-412.09

b^2 = 530.4

b = sqrt(530.4)

b = 23.0304146727757  value is approximate

b = 23.0

I rounded to one decimal place because the other values (20.3 and 30.7) were to one decimal place.

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