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3 years ago

6-8x=7-9x+12 solve for x

2 answers:

8 0

Add 7 and 12 together
6 - 8x = 19 - 9x

Subtract 19 on both sides
-13 - 8x = -9x

Add 8x on both sides
-13 = -x

Divide -1 on both sides

13 = x

damaskus [11]3 years ago

5 0

The answer is 69,420

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Step-by-step explanation:

Let x be the distance of a point P ( lies on the building ) from the top of the building such that AP is perpendicular to the building and y be the distance of the building from point A, ( shown in the below diagram )

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⇒ $1\text{ minute } =\frac{1}{60}\text{ degree }$

$20\text{ minutes }=\frac{20}{60}=\frac{1}{3}\text{ degree}$

$50\text{ minutes }=\frac{50}{60}=\frac{5}{6}\text{ degree}$

By the below diagram,

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$tan(12+\frac{5}{6})^{\circ}=\frac{8.20}{y}$

$tan (\frac{77}{6})^{\circ}=\frac{8.20}{y}$

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Now, again by the below diagram,

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