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olasank [31]
3 years ago
12

What is 129.392 rounded to nearest Ten?​

Mathematics
2 answers:
vesna_86 [32]3 years ago
7 0
It’s 129.4 have a good day and get an a
Stels [109]3 years ago
6 0

\huge\bold\color{purple}{Answer:}

<h2><u>129</u><u>.</u><u>4</u></h2>

<u>=</u><u>=</u><u>=</u><u>=</u><u>=</u><u>=</u><u>=</u><u>=</u><u>=</u><u>=</u><u>=</u><u>=</u><u>=</u><u>=</u><u>=</u><u>=</u><u>=</u><u>=</u><u>=</u><u>=</u><u>=</u><u>=</u><u>=</u><u>=</u><u>=</u><u>=</u><u>=</u><u>=</u><u>=</u><u>=</u><u>=</u><u>=</u><u>=</u><u>=</u><u>=</u><u>=</u>

<u>Explanation</u><u>:</u>

  • To round 129.392 to the nearest tenth consider the hundredths’ value of 129.392, which is 9 and equal or more than 5. Therefore, the tenths value of 129.392 increases by 1 to 4.

129.392 rounded to the nearest tenth = 129.4

<u>=</u><u>=</u><u>=</u><u>=</u><u>=</u><u>=</u><u>=</u><u>=</u><u>=</u><u>=</u><u>=</u><u>=</u><u>=</u><u>=</u><u>=</u><u>=</u><u>=</u><u>=</u><u>=</u><u>=</u><u>=</u><u>=</u><u>=</u><u>=</u><u>=</u><u>=</u><u>=</u><u>=</u><u>=</u><u>=</u><u>=</u><u>=</u><u>=</u><u>=</u><u>=</u><u>=</u>

<u>\huge\bold\color{purple}{Hope \:  it  \: helps!}</u>

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Conjugate/Rational Number?
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Answer:

1)  \dfrac{2}{\sqrt{5} }  = \dfrac{2 \cdot \sqrt{5} }{5}

2)  -\dfrac{5}{\sqrt{3} } = -\dfrac{5 \cdot \sqrt{3} }{3}

3)  \dfrac{\sqrt{2} + \sqrt{5}  }{\sqrt{10} } =\dfrac{\sqrt{5}  }{5} + \dfrac{ \sqrt{2}  }{2}

4)  \dfrac{3 + \sqrt{2} }{\sqrt{3} } \times \dfrac{\sqrt{3} }{\sqrt{3} } = \sqrt{3} + \dfrac{\sqrt{6} }{3}

5)  \dfrac{\sqrt{3} }{\sqrt{5} + \sqrt{2}  }= \dfrac{\sqrt{15} - \sqrt{6} }{3}

Step-by-step explanation:

The rationalization of the denominator of the surds are found as follows;

1) \dfrac{2}{\sqrt{5} }

\dfrac{2}{\sqrt{5} } \times \dfrac{\sqrt{5} }{\sqrt{5} } = \dfrac{2 \cdot \sqrt{5} }{5}

\dfrac{2}{\sqrt{5} }  = \dfrac{2 \cdot \sqrt{5} }{5}

2) -\dfrac{5}{\sqrt{3} }

-\dfrac{5}{\sqrt{3} } \times \dfrac{\sqrt{3} }{\sqrt{3} } = -\dfrac{5 \cdot \sqrt{3} }{3}

-\dfrac{5}{\sqrt{3} } = -\dfrac{5 \cdot \sqrt{3} }{3}

3) \dfrac{\sqrt{2} + \sqrt{5}  }{\sqrt{10} }

\dfrac{\sqrt{2} + \sqrt{5}  }{\sqrt{10} } \times \dfrac{ \sqrt{10}  }{\sqrt{10} } = \dfrac{\sqrt{20} + \sqrt{50}  }{10 } = \dfrac{2\cdot \sqrt{5} + 5 \cdot \sqrt{2}  }{10} = \dfrac{\sqrt{5}  }{5} + \dfrac{ \sqrt{2}  }{2}

\dfrac{\sqrt{2} + \sqrt{5}  }{\sqrt{10} } =\dfrac{\sqrt{5}  }{5} + \dfrac{ \sqrt{2}  }{2}

4) \dfrac{3 + \sqrt{2} }{\sqrt{3} }

\dfrac{3 + \sqrt{2} }{\sqrt{3} } \times \dfrac{\sqrt{3} }{\sqrt{3} } = \dfrac{3 \cdot \sqrt{3}+\sqrt{6}  }{3 } = \sqrt{3} + \dfrac{\sqrt{6} }{3}

\dfrac{3 + \sqrt{2} }{\sqrt{3} } \times \dfrac{\sqrt{3} }{\sqrt{3} } = \sqrt{3} + \dfrac{\sqrt{6} }{3}

5) \dfrac{\sqrt{3} }{\sqrt{5} + \sqrt{2}  }

\dfrac{\sqrt{3} }{\sqrt{5} + \sqrt{2}  } = \dfrac{\sqrt{5} - \sqrt{2} }{\sqrt{5} - \sqrt{2} }  = \dfrac{\sqrt{15} -\sqrt{6} }{5 - 2} = \dfrac{\sqrt{15} - \sqrt{6} }{3}

\dfrac{\sqrt{3} }{\sqrt{5} + \sqrt{2}  }= \dfrac{\sqrt{15} - \sqrt{6} }{3}

6) \dfrac{\sqrt{7} }{\sqrt{3} - \sqrt{5}  }

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\dfrac{\sqrt{7} }{\sqrt{3} - \sqrt{5}  } \times \dfrac{\sqrt{3} + \sqrt{5}}{\sqrt{3} + \sqrt{5}}  =\dfrac{\sqrt{21} + \sqrt{35}}{8}

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Read 2 more answers
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