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Falling_In_Katt
 one year ago
***WILL MEDAL***
The perimeter of a triangle is 7a  11b. If two of its sides are 2a + b and a  9b, what is the third side?
Falling_In_Katt
 one year ago
***WILL MEDAL*** The perimeter of a triangle is 7a  11b. If two of its sides are 2a + b and a  9b, what is the third side?

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0To find the perimeter you add up all the sides of the triangle

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0we'll us x to represent the missing side

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0(2a+b) + (a9b) + x = 7a11b

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0now just simplify the equation and solve for x

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Do you know how to do that?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0first add all the like terms on the left side

anonymous
 one year ago
Best ResponseYou've already chosen the best response.03a  8b + x = 7a11b

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0now move the a and b terms to the right side of the equation to get x by itself

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0This means that the missing side is 4a  3b

Falling_In_Katt
 one year ago
Best ResponseYou've already chosen the best response.0Ohhhhh that makes since .
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