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Zina [86]
2 years ago
6

Please please help me!!!

Mathematics
1 answer:
Nuetrik [128]2 years ago
3 0

Answer:

Step-by-step explanation:

The square means a 90 degree angle.

We know that all the angles in a triangle add to 180 degrees. So, we can build an equation for x: (2x+1)+(5x+5)+(90)=180

Combining like terms on the left side gives 7x+96=180

Subtracting 96 from both sides gives 7x=84

Dividing both sides by 7 gives \boxed{x=12}

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