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carlosbs71
23.08.2021 •
Mathematics
Which set of ordered pairs does not represent a function?
{(7, -5), (-5, -2), (8, –9), (-9,0)}
{(-3,0), (0, -5), (6,-2), (1, -2)}
{(6, -6), (-9,2), (6, -1), (-8, -9)}
{(7,3), (2, –6), (5, –7), (0, – 7)}
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Ответ:
{(6, -6), (-9,2), (6, -1), (-8, -9)}
Ответ:
■
a = 141°
b = 13°
c = 26°
■ Step-by-step explanation:
a = 128 + b
c = 2b
a + b + c = 128
replace a & c
(128 + b) + b + 2b = 180
4b = 180 - 128
4b = 52
b = 13°
a = 128° + 13° = 141°
c = 2×13° = 26°