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blagie [28]
3 years ago
13

What is the exterior angle of #9 ?

Mathematics
1 answer:
Alexxandr [17]3 years ago
6 0

Answer:

55

Step-by-step explanation:

3x-12=2x

    +12

3x=2x +12

    -2x

x=12

4(12)+ 9

48+9

=55

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