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3 years ago

One more than three times a number is the same as four less than double a number

1 answer:

3 0

Answer:

3x + 1 = 2x - 4. x = -5

Step-by-step explanation:

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Answer:

$\large\boxed{X=\sqrt{12}\ in=2\sqrt3\ in}$

Step-by-step explanation:

ΔADC and ΔCBD are similar. Therefore the corresponding sides are in proportion:

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

We have

AD = 2, CD = X, DB = 6.

Substitute:

$\dfrac{2}{X}=\dfrac{X}{6}$ <em>cross multiply</em>

$X^2=(2)(6)\\\\X^2=12\to X+\sqrt{12}$

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