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Ber [7]
3 years ago
13

PLease Help Will Mrk Brainliest

Mathematics
1 answer:
Andrew [12]3 years ago
3 0

Answer:

x=81°

Step-by-step explanation:

The sum of all angles in a triangle is 180°

57+42=99

180-99=81

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3 years ago
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Hunter-Best [27]
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a. £2,090
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