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Semenov [28]
2 years ago
13

Whats the answer to 3 sqaured plus 2x equals 7

Mathematics
1 answer:
damaskus [11]2 years ago
4 0

Answer:

Step-by-step explanation: 3²+12²=x² simplifies to 9+144=x² so 153=x² or x²=153.

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In a triangle the sides has 82 degrees ,2x+10 degrees and x degrees what is x
yaroslaw [1]

Answer:

x = 29 1/3 degrees

Step-by-step explanation:

A triangle has 3 angle that total 180 degrees.

The three angles given are 82 degrees ,2x+10 degrees and x degrees.

So,  

82+ (2x+10) + x = 180

Combine like terms.

92 + 3x = 180

Subtract 92 from each side

3x = 180 -92

3x = 88

divide each side by 3

3x/3 = 88/3

Change 88/ 3 to a mixed number

3 goes in to 88 29 times  with 1 left over.

x = 29 1/3 degrees


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