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SVEN [57.7K]
3 years ago
5

If BC = 8.3, CD = 6.7, and AD = 11.6, find AB to the nearest tenth.

Mathematics
1 answer:
sladkih [1.3K]3 years ago
8 0
|BC|=8.3;\ |CD|=6.7;\ |AD|=11.6\\\\|AC|^2+|CD|^2=|AD|^2\\\\|AC|^2+6.7^2=11.6^2\\\\|AC|^2=134.56-44.89\\\\|AC|^2=89.67\\---------------\\|AB|^2=|BC|^2+|AC|^2\\\\|AB|^2=8.3^2+89.67\\\\|AB|^2=68.89+89.67\\\\|AB|^2=158.56\\\\|AB|=\sqrt{158.56}\\\\|AB|\approx12.6
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Answer: 6.6 miles

Step-by-step explanation:

Since he finished 22% of his skiing in the morning, that means he still has 78% (100% - 22%) of his skiing left.

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Step-by-step explanation:

<u>Statements    </u>                                   <u>  Reasons</u>

1) QS =42                                               Given

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3) (x + 3) + 2x = 42                            Substitution Property

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Explanation:

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divide both sides by 3.

3x/3 =39/3

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As usual, the diagram is not drawn to scale.

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<em>Comment on this geometry</em>

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