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Afina-wow [57]
3 years ago
7

The two triangles are similar, What is the length of DE?

Mathematics
1 answer:
horsena [70]3 years ago
7 0
<h2>Answer:</h2>

This is easy. All you need to do is set up a <u><em>proportional relationship</em></u>.

A proportional relationship uses variables to show similarities, in this case, in triangles.

\frac{2}{3} = \frac{x}{6.3}\\\\3x = 12.6\\\\x = 4.2

<u><em>x</em></u> represents the missing side.

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3 years ago
5/8 + -3/4 i don’t know this
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Step-by-step explanation:

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Perform the indicated operation 5 1/6 - 2 2/3
goldenfox [79]

Answer:

2½

Step-by-step explanation:

First find the Least Common Denominator [LCD], which is 6, then convert 5⅙:

5⅙ → 4 7⁄6

5 \frac{1}{6}  - 2 \frac{2}{3}  = 4 \frac{7}{6}  -  2 \frac{4}{6}  = 2 \frac{3}{6}  = 2 \frac{1}{2}

You see, we regrouped 1 from 5⅙ to make sure that the top mixed number had a higher value than the bottom mixed number, so it is much easier to work with.

I am joyous to assist you anytime.

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