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Agata [3.3K]
3 years ago
12

Which value of makes this equation true? 12 − 9 + = 12

Mathematics
1 answer:
AleksAgata [21]3 years ago
7 0

Answer:

+9

Step-by-step explanation:

12-9+x=12

3+x=12

x=12-3

x=9

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Answer:

see explanation

Step-by-step explanation:

∠ YXW = ∠ ZXV ( vertically opposite angles ) , so

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2a = 50 ( divide both sides by 2 )

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Then

(7)

∠ ZXV = 2a + 65 = 2(25) + 65 = 50 + 65 = 115°

(8)

∠ YXW = ∠ ZXV = 115°

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(9)

∠ ZXY = 180° - 115° = 65°

(10)

∠ VXW = ∠ ZXY = 65° ( vertically opposite angles

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Margarita [4]
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