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Helga [31]
2 years ago
7

LOOKING FOR BRAINIEST?

Mathematics
1 answer:
jeka57 [31]2 years ago
6 0

Answer:

x = 8

Step-by-step explanation:

The sum of the 3 angles in a triangle = 180°

Sum the 3 given angles and equate to 180

13x - 8 + 7x + 4 + 3x = 180 , simplify left side

23x - 4 = 180 ( add 4 to both sides )

23x = 184 ( divide both sides by 23 )

x = 8

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Express the measurement 4.29478416 kg with 8, 6, 4, and 2 significant figures
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To round a number to a certain number of significant figures,

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