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Rita teaches environmental biology. She has 2 forms of a midterm exam, and she wonders if either form is

Mathematics

1 answer:

3241004551 [841]2 years ago

7 0

Answer:

A randomized block design where the 444 sections are the blocks

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The area of the pathway is square, and its area is 196 square cm. Find the length of the pathway.

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3 years ago

If √2 = 1.414 then the value of 5+√2 / 5-√2 is

Gala2k [10]

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1.787

Step-by-step explanation:

$\\ \sf \frac{5 + \sqrt{2} }{5 - \sqrt{2} } \times \frac{5 + \sqrt{2} }{5 + \sqrt{2} }$

$\\ \sf = \frac{(5 + \sqrt{2}) }{5 - \sqrt{2} } \times \frac{(5 + \sqrt{2}) }{5 + \sqrt{2} }$

$\\ \sf = \frac{25 + 5 \sqrt{2 } + 5 \sqrt{2} + 2 }{( {5})^{2} - ( \sqrt{ {2}})^{2} }$

$\\ \sf = \frac{27 + 10 \sqrt{2} }{25 - 2}$

$\\ \sf = \frac{27 - 10 \sqrt{2} }{23}$

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$\\ \sf = 1.787$

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3 years ago