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2 years ago

Help this this is due today

Mathematics

1 answer:

Olegator [25]2 years ago

7 0

Answer:

x=3

Step-by-step explanation:

Simplify 3(x-2)+5X

= 8x-6=18

Add 6 to both sides

8x=24

Divide by 8

x=3

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Light shines through window what is the area of a trapezoid shaped region created by the light

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Answer:

16 ft²

Step-by-step explanation:

The complete question is attached.

A trapezoid is a quadrilateral (has four sides) with one a parallel base. The base angles and the diagonals of an isosceles trapezoid are equal.

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Step-by-step explanation:

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1 year ago

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

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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

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

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

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

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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2 years ago