Mathematics
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OpenStudy (anonymous):
Express the perimeter of the triangle as a polynomial.
algebra, semester 1, unit 12, MUT
A.
10x – 14
B.
–10x + 14
C.
10x + 14
D.
9x – 14
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OpenStudy (misty1212):
HI!!
OpenStudy (misty1212):
add the sides
OpenStudy (anonymous):
-1x, -12x, 8x
OpenStudy (misty1212):
\[2x-3+x-12+7x+1\] is the first step
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OpenStudy (misty1212):
combining like terms is the second step
OpenStudy (anonymous):
ok
OpenStudy (anonymous):
i'm thinking A then or B
OpenStudy (anonymous):
@misty1212
OpenStudy (anonymous):
\[2x+x+7x=?\]
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OpenStudy (anonymous):
D
OpenStudy (anonymous):
?
OpenStudy (anonymous):
D is a letter
you need to find
\[2x+x+7x\]
OpenStudy (misty1212):
same as
\[2+1+7\] only with an x after it
OpenStudy (anonymous):
i'm talking about the answer D 9*-14
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OpenStudy (anonymous):
oo ok
OpenStudy (misty1212):
no it cannot be that because \(2+1+7\neq 9\)
OpenStudy (anonymous):
well i was thinking A
OpenStudy (anonymous):
stop with the letters
lets just find the answer, then we can figure out which one it is
OpenStudy (anonymous):
did you find
\[2x+x+7x\]?
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OpenStudy (anonymous):
10x+14
OpenStudy (misty1212):
ok \[2x+x+70=10x\] is correct
OpenStudy (misty1212):
what about
\[-3-12+1\]?
OpenStudy (anonymous):
-10x+14
OpenStudy (anonymous):
oh no
what is
\[-3-12+1\]?
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OpenStudy (anonymous):
10x+14