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EastWind [94]
3 years ago
6

What is the value of x- This is for brainliest!

Mathematics
1 answer:
aleksandr82 [10.1K]3 years ago
8 0
You would need to write a solvable equation, and you can do this because you know that angles in a triangle add up 180° so the missing angle must be (180 - 9x). This makes the equation:
5x + 9 + x + (180 - 9x) = 180
6x + 9 + 180 - 9x = 180
-3x + 189 = 180
- 189
-3x = -9
÷ -3
x = 3

So your answer is x = 3, I hope this helps!
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andreev551 [17]

Rewrite so

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is on the left side of the inequality.

12

+

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−

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x

≥

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+

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x

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3

x

from

8

x

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12

+

5

x

≥

5

+

2

x

−

2

Subtract

2

from

5

.

12

+

5

x

≥

2

x

+

3

Move all terms containing

x

to the left side of the inequality.

Tap for more steps...

12

+

3

x

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Move all terms not containing

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3

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−

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