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Amyra2003
09.09.2021 •
Mathematics
-10 9 -8 -7 -6 -5 4 العا - 2 -1 o 1 2 3 4 5 6 7 8 9 10 Which inequality's solution is graphed here? A) X + 9 < 5 B) X-5 < 9 ) X + 5 < 9 D) X-9 < 5
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Ответ:
The vertical angles are equal to each other, that is, one of the one-sided corners will be 116°.
The sum of the one-sided angles is 180°, which means: 4x+116 = 180°
4x = 180-116 => 4x = 64°
x = 64/4 = 16°.
The sum of two adjacent angles is 180°. which means, that: 2x-3y = 180-64 = 116°
2x-3y = 116°
-2x+3y = -116
-32+3y = -116
3y = -116-(-32)
3y = -84
y = -84/3 => y = -28.