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3 years ago

-6x -6y = 66 2x + 4y = -32

Mathematics

1 answer:

RoseWind [281]3 years ago

7 0

Answer:

(23/2, 1/2)

Step-by-step explanation:

Let's solve this system through elimination by addition/subtraction:

Divide all three terms of the first equation by 3. This results in the equivalent system

-2x - 2y = 33

2x + 4y = -32

Combining like terms results in:

2y = 1, and so y = 1/2.

Let's use the first equation and y = 1/2 to find x:

-6x - 6(1/2) = 66

This becomes -6x - 3 = 66, or -6x = 69, or x = -69/6 , or x = 23/2

The solution is thus (23/2, 1/2)

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3 years ago

If 8y - 8=24 find the value of 2y

Mariulka [41]

Answer:

2y =8

Step-by-step explanation:

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4 years ago

The equation of a circle is

sergij07 [2.7K]

Answer:

The answer is

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Step-by-step explanation:

The general equation of a circle is given by

where the center of the center of the circle is given by

From the question the equation is

x² + y² + 14x + 2y + 14 = 0

Comparing with the general equation above we have

2g = 14 2f = 2

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The radius of a circle is given by

$r = \sqrt{ {g}^{2} + {f}^{2} - c}$

where

g = 7

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Substitute the values into the above formula

That's

$r = \sqrt{ {7}^{2} + {1}^{2} - 14 } \\ r = \sqrt{49 + 1 - 14} \\ r = \sqrt{36}$

we have the final answer as

<h3>radius = 6</h3>

Hope this helps you

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3 years ago

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erma4kov [3.2K]

Answer:

Step-by-step explanation:

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4 years ago

Read 2 more answers

-6x -6y = 66 2x + 4y = -32​

-6x -6y = 66 2x + 4y = -32