3 years ago

Someone please help me

Mathematics

1 answer:

Katarina [22]3 years ago

5 0

Its the same shape so it would be A.
and C because they are similar

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

allochka39001 [22]

<h2>Answer:</h2>

Like you said, we need to use substitution to solve for y.

$x + y = 11\\-1(-x = -y - 9)\\\\x + y = 11\\x = y + 9\\\\y + 9 + y = 11\\\\2y + 9 = 11\\\\2y = 20\\\\y = 10$

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$x + 10 = 11\\\\x = 1$

Now we have the solution of this system.

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3 years ago