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Rom4ik [11]
3 years ago
14

Helppppppppppppppppppppp

Mathematics
1 answer:
Nastasia [14]3 years ago
8 0

Answer:

Step-by-step explanation:

1) 5 - [-5] = 5 + 5 = 10

2)8 - 13 = 8 + (-13) = -5

3) 12 +(-3) = 9

4) x + (-7) = 5

   x - 7 = 5

        x = 5 + 7

x = 12

We need to add 12 to (-7) to get 5

5) 7 - x = -5

    7 = -5 +x

  7 + 5 = x

    12 = x

We need to take away 12 to 7 to get (-5)

6) 7 - (-10) = 7 + 10 = 17

17° C

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So the vertex angle equals
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