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3 years ago

A tablecloth is 82 inches long. What is the length in feet and inches?

Mathematics

2 answers:

kolezko [41]3 years ago

7 0

Answer: 6 feet and 10 inches

Step-by-step explanation:

Each foot has 12 inches in it

You can either divide 82 by 12 or

1 foot: 12 inches

2 foot: 24 inches

3 foot: 36 inches

4 foot: 48 inches

5 foot: 60 inches

6 foot: 72 inches

7 foot: 84 inches

Since 7 foot is too much you can now take 6 feet (72 inches) and subtract it from 82

82-72=10

10 meaning 10 inches

6 feet and 10 inches

You may also divide but you will get a decimal like this:

6.83333333

 

GarryVolchara [31]3 years ago

4 0

6.8 feet or about 6ft 10

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Let $x$ be the unknown number. So, three times that number means $3x$ , and the square of the number is $x^2$

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Then, we have to subtract this number from $x^2$ , so we have

$x^2-(3x+528)$

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This is a quadratic equation, i.e. an equation like $ax^2+bx+c=0$ . These equation can be solved - assuming they have a solution - with the following formula