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LenKa [72]
2 years ago
14

How to do solve this: what is 63% of 82?

Mathematics
2 answers:
Drupady [299]2 years ago
8 0

To get the solution, we are looking for, we need to point out what we know.  

1. We assume, that the number 81 is 100% - because it's the output value of the task.  

2. We assume, that x is the value we are looking for.  

3. If 81 is 100%, so we can write it down as 81=100%.  

4. We know, that x is 63% of the output value, so we can write it down as x=63%.  

5. Now we have two simple equations:

1) 81=100%

2) x=63%

where left sides of both of them have the same units, and both right sides have the same units, so we can do something like that:

81/x=100%/63%

6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for what is 63% of 81

81/x=100/63

(81/x)*x=(100/63)*x       - we multiply both sides of the equation by x

81=1.5873015873*x       - we divide both sides of the equation by (1.5873015873) to get x

81/1.5873015873=x  

51.03=x  

x=51.03

now we have:  

63% of 81=51.03

ioda2 years ago
3 0

In a calculator you would take 82 * 0.63 which equals 51.66

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Adding m∠R to both sides of the inequality...

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m∠R > 90°

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Start with m∠R > m∠S + m∠T.

Adding (m∠S + m∠T) to both sides of the inequality...

m∠R + (m∠S + m∠T) >  m∠S + m∠T + (m∠S + m∠T)

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Example 2:  m∠S = 15°, and m∠T = 10°;  By the triangle sum Theorem, m∠R = 155°, and the angles still satisfy the original inequality.

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By the transitive property of inequalities, m∠R > m∠S.

So, option 5 must be true.

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