Do these side lengths make a right triangle? 3, 4, 5. Will try to give a brainliest!

Mathematics

1 answer:

Sever21 [200]3 years ago

3 0

Answer:

yes

Step-by-step explanation:

any triangle with a 3:4:5 ratio will be a right triangle

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The sum of the digits of a two-digit number is 5. When the digits are reversed, the number increases by 27. Find the original nu

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Answer:

Step-by-step explanation:

$a-\text{tens digit}\\b-\text{unity digit}\\10a+b-\text{number}\\10b+a-\text{number with reversed digits}\\a+b-\text{sum of digits}\\\\\bold{System\ of\ equations:}\\\\\left\{\begin{array}{ccc}a+b=5\\10b+a=10a+b+27&\text{subtract}\ 10a\ \text{and}\ b\ \text{from both sides}\end{array}\right\\\\\left\{\begin{array}{ccc}a+b=5\\9b-9a=27&\text{divide both sides by 9}\end{array}\right$

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Step-by-step explanation:

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Is (-4,4) the solution of the system. 4x+5y>-6 and -2x+7y>20

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Answer:

It is <em>a</em> solution, one of an infinite number of solutions.

Step-by-step explanation:

You can check to see if the given point is in the solution set:

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