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3 years ago

Which of the following coordinate points is the point of intersection of these two lines? y - 6x = -4 and y - 2x = 8

Mathematics

1 answer:

Nimfa-mama [501]3 years ago

7 0

Answer:

(x,y)=(3,14)

Step-by-step explanation:

y-6x=-4 , y=-4+6x

y-2x=8, y=8+2x

(y=)-4+6x=8+2x

6x-2x=8+4

4x=12

x=12/4

x=3, then

y=-4+6*3=-4+18=14

(x,y)=(3,14)

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Answer:

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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

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

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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The sector of the outer sector has the following area

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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

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

6 0

2 years ago

A car travels at an average speed of 52 miles per hour. How many miles does it travel in 4 hours and 15 minutes?

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221 miles I believe.

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andreev551 [17]

Answer:

Step-by-step explanation:

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2 years ago

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Answer:

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2 years ago