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3 years ago

14

Can you find the y variable?

1 answer:

ELEN [110]3 years ago

3 0

Answer:

$\large\boxed{y=27}$

Step-by-step explanation:

Look at the picture.

ΔADC and ΔCDB are similar (AA). Therefore the sides are in proportion:

$\dfrac{AD}{DC}=\dfrac{DC}{DB}$

We have:

$AD=12,\ DC=18,\ DB=y$

Substitute:

$\dfrac{12}{18}=\dfrac{18}{y}$ <em>cross multiply</em>

$12y=(18)(18)$

$12y=324$ <em>divide both sides by 12</em>

$y=27$

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3 years ago

Read 2 more answers

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Step-by-step explanation:

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2 years ago

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Answer:

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Step-by-step explanation:

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where

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substitute in the equation

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3 years ago

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Step-by-step explanation:

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3 years ago