3 years ago

Plz help need answer ASAP

Mathematics

2 answers:

olga_2 [115]3 years ago

7 0

Answer : -4
Explanation:

givi [52]3 years ago

3 0

The correct answer would be 4

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Answer:

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zloy xaker [14]

D is the correct answer

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3 years ago

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3 years ago

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Use the substitution method to solve the system of equations. Choose the correct ordered pair. x + y = 11 -x = -y - 9

suter [353]

$x+y=11 \\
-x=-y-9 \\ \\
\hbox{substitute the second equation by -1} \\ \\
x+y=11 \\
x=y+9 \\ \\
\hbox{substitute y+9 for x in the first equation} \\ \\
y+9+y=11 \\
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y=1 \\ \\
x=y+9 \\
x=1+9 \\
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The answer is B.

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3 years ago

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