NickWinston261
07.01.2021 •
Mathematics
Is (-10, 10) a solution to this system of equations?
18x + 20y = 20
20x – 2y = 9
yes
no
Solved
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Ответ:
No
(The first system is correct but the second one is wrong)
Step-by-step explanation:
You can plug (-10,10) into these equations
a) 18(-10)+20(10)=20
-180+200=20
20=20
b) 20(-10)-2(10)=9
-200-20≠9
-220≠9
Ответ: