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djyliett [7]
3 years ago
10

What is the solution to this system of equations?

Mathematics
1 answer:
maksim [4K]3 years ago
8 0

Answer:x=3 y=1/2

Step-by-step explanation:

x+2y=4

2x-2y=5

Add both equations together

x+2x+2y-2y=4+5

3x+0=9

3x=9

Divide both sides by 3

3x/3=9/3

x=3

Substitute x=3 in x+2y=4

x+2y=4

3+2y=4

Collect like terms

2y=4-3

2y=1

Divide both sides by 2

2y/2=1/2

y=1/2

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What is the center of a circle represented by the equation x92y62102
andreev551 [17]

The center of the circle is (-9, -6).

What is the center of the circle?

A circle's center is the point from which all of the distances to the other points on the circle are equal. The radius of the circle is the measurement at issue.

Here, we have

The equation of a circle is written as:

(x - h)² + (y - k)² = a²

Where (h, k) is the center and a is the radius of the circle.

Where (h, k) is the center and a is the radius of the circle.

(x + 9)² + (y + 6)² = 10² (Given)

From the equation, the center of the circle is (-9, -6)

The radius of the circle is 10.

In general form, the equation can be written as

x² + 18x + 81 + y² + 12y + 36 = 100

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To learn more about the center of the circle from the given link

brainly.com/question/25938130

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8 0
1 year ago
Can someone help me with this?
Tanzania [10]

Answer:

ST=8.8

SR=15.5

Step-by-step explanation:

ST is the difference between S and T.

that would be 16.3-7.5=8.8

similarly RT is the difference between S and R

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3 years ago
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Grace [21]
Greetings!

"10-3" can also be written as:
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Hope this helps.
-Benjamin


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3 years ago
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Slav-nsk [51]
The answer is 10. I hope that this helped ☻
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Dmitry_Shevchenko [17]

Step-by-step explanation:

A = pi × r²

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A = 530.93 km²

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