3 years ago

Solve for x: |2x + 12| = 18

Mathematics

1 answer:

Masteriza [31]3 years ago

8 0

The answer should be

x = 3, x = –15

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HELP PLEASEEE AND ANSWER FAST!:))

kodGreya [7K]

I don't get it, what are you suppose to do?

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The sector COB is cut from the circle with center O. The ratio of the area of the sector removed from the whole circle to the ar

mafiozo [28]

Answer:

$Ratio = \frac{R^2 - r^2 }{ r^2}$

Step-by-step explanation:

Given

See attachment for circles

Required

Ratio of the outer sector to inner sector

The area of a sector is:

$Area = \frac{\theta}{360}\pi r^2$

For the inner circle

$r \to radius$

The sector of the inner circle has the following area

$A_1 = \frac{\theta}{360}\pi r^2$

For the whole circle

$R \to Radius$

The sector of the outer sector has the following area

$A_2 = \frac{\theta}{360}\pi (R^2 - r^2)$

So, the ratio of the outer sector to the inner sector is:

$Ratio = A_2 : A_1$

$Ratio = \frac{\theta}{360}\pi (R^2 - r^2) : \frac{\theta}{360}\pi r^2$

Cancel out common factor

$Ratio = R^2 - r^2 : r^2$

Express as fraction

$Ratio = \frac{R^2 - r^2 }{ r^2}$

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3 years ago

What is yhe area of thr hexagon? 5cm, 8cm and 9.28 cm

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A piece of equipment is purchased for $18,000 & has a salvage value of $2,000. The estimated life is 10 years & the meth

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What is the square root of 16

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Answer:

Step-by-step explanation:

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