3 years ago

Algebraic expression for 5 times a number

Mathematics

1 answer:

Step2247 [10]3 years ago

3 0

It could be 5x, 5 being the digit, x being "a number"

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elixir [45]

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Vlada [557]

Answer:

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Nataly [62]

$\frac{(5 \: - \: 8x)}{( \sqrt{5 \: - \: 8x} )} \: = \: \sqrt{5 \: - \: 8x}$
For the result to be Real,
$5 \: - \: 8x \: \geqslant \: 0$
$8x \: \leqslant \: 5$
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$( \frac{(5 - 8x)}{( \sqrt{5 - 8x} )} ) \: \times \: (\frac{ \sqrt{5 - 8x} }{ \sqrt{5 - 8x} } ) \: = \: \frac{ {(5 \: - \: 8x)}^{ \frac{3}{2} } }{(5 \: - \: 8x)}$
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$\frac{{(5 \: - \: 8x)}^{ \frac{3}{2} } }{(5 \: - \: 8x)}$
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erik [133]

300/250 = 6/5

1/5 = 20%

You are correct, well done.

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