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shannon.janette1 Group TitleBest ResponseYou've already chosen the best response.0
dw:1350416255533:dw
 one year ago

shannon.janette1 Group TitleBest ResponseYou've already chosen the best response.0
The left angle is 3x+20 by the ways. I've tried this problem over and over and just don't get it!
 one year ago

tjones89 Group TitleBest ResponseYou've already chosen the best response.0
the angles of a triangle all add up to 180, so add these three expressions and set them equal to 180 like this \[4x + 5 + 3x + 20 + 8x + 15 = 180\]
 one year ago

tjones89 Group TitleBest ResponseYou've already chosen the best response.0
combine like terms and solve for x
 one year ago

shannon.janette1 Group TitleBest ResponseYou've already chosen the best response.0
15x+40=180 15x=140 x=9.3 but when you plug them in it doesn't make snse?
 one year ago

tjones89 Group TitleBest ResponseYou've already chosen the best response.0
sure it does, if we plug 9.3 back into the equation 4x + 5 + 3x + 20 + 8x + 15 = 180 the result will be 180 = 180 which means we've found the right number for x
 one year ago
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