3 years ago

Out of 80 students in class 20% were absent find out how many students were present

Mathematics

2 answers:

madreJ [45]3 years ago

8 0

Answer:

64 were present, or 16 were absent.

Ket [755]3 years ago

5 0

16 students were absent so that means 64 students were present

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castortr0y [4]

Answer:

<h2>x = 5√3 inches</h2>

Step-by-step explanation:

Since the triangle is a right angled triangle we can use Pythagoras theorem to find the missing side x

Using Pythagoras theorem we have

${a}^{2} = {b}^{2} + {c}^{2}$

where a is the hypotenuse

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${10}^{2} = {5}^{2} + {x}^{2}$

${x}^{2} = {10}^{2} - {5}^{2}$

${x}^{2} = 100 - 25$

${x}^{2} = 75$

We have the final answer as

<h3>x = 5√3 inches</h3>

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Help? Fraction? Triangle similarity.<img src="https://tex.z-dn.net/?f=%20%5Cfrac%7B62%7D%7B15.5%7D%20x%20%20%5Cfrac%7B92%7D%7Bx%

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to find x cross multiply:-

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3 years ago

Out of 80 students in class 20% were absent find out how many students were present​

Out of 80 students in class 20% were absent find out how many students were present