wertyong9689
20.09.2020 •
Mathematics
Is -7 + 28 positive or negative?
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Ответ:
Positive
Step-by-step explanation:
-7 + 28 = 21
Ответ:
Vertical; 47
Step-by-step explanation:
The two angles are vertical since they are opposite to each other. Vertical angles are equal therefore, x equals 47° as well.