anonymous
  • anonymous
Find the measure of angle CDE<---help please
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
anonymous
  • anonymous
Well straight up I can tell you the answer is 65 for CDE, I used simultaneous equations to find this You know that the addition of all angles is 180, so then you know that the remaining interior angles must equal to 130 because 180 take the already known angle, 50, is 130, so that means that your first equation is going to be \[x+y=130\] Your second equation is going to be 180, because that is the angle of the straight line take away the equation in CDE equals y \[180-(2x-15)=y\] You can now view it as; \[x+y = 130, 2 x+y = 195\] \[x=130-y, 2(130-y)+y=195\] \[260-2y+y=195\] \[65-y=o\] \[y=65\] \[x+(65)=130\] \[x=130-65\] \[x=65\]
anonymous
  • anonymous
180- (50+x) + (2x-15) = 180 -50 -x +2x -15 =0 x=75 therefore, angle cde =135

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anonymous
  • anonymous
x=65 sorry
anonymous
  • anonymous
addition mistake :p cde= 115
anonymous
  • anonymous
No, sorry the answer is 115 because 65 is the interior angles, so 180-65=115
anonymous
  • anonymous
@ricnus thats so much that was alot of work and @indianaalexander thank you to

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