mmagee2020
11.06.2020 •
Mathematics
Which ordered pair is a solution for 2x+5y=-11
10x+3y=11
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Ответ:
X = 2 and Y = -3
Step-by-step explanation:
2x+5y=-11 - equation 1
10x+3y=11 - equation 2
from equation 1, 2X = -11 - 5y
X = -11/2 - 5Y/2
X = -5.5 - 2.5Y
insert X = -5.5 - 2.5Y into equation 2
therefore, 10x+3y=11
10(-5.5 - 2.5Y) + 3y = 11
-55 -25Y +3Y = 11
-22Y = 11+55
Y = -66/22
Y = -3
insert Y = -3 into equation 1
thus 2x + 5(-3) = -11
2x - 15 = -11
2x = -11 + 15
2x = 4
x = 4/2
x = 2
ordered pair: X = 2 and Y = -3
Ответ:
i think dylan sorry if its wrong!!
Step-by-step explanation: