anonymous
  • anonymous
If the degree measure of an angle is 40° less than 3 times the degree measure of its supplementary angle, what is the degree measure of the angle? A. 50° B. 55° C. 125° D. 130°
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
b
imqwerty
  • imqwerty
125
mathstudent55
  • mathstudent55
Write an equation, then solve it. Let x be the measure of the supplement. 3 times the supplement is 3x 40 deg less than 3 times the supplement is 3x - 40 The angle measures 3x - 40 and the supplement measures x. The measures of supplementary angles add up to 180, so 3x - 40 + x = 180 Solve this equation for x. This is the measure of the supplement. Then plug in the value of x into 3x - 40 to find the measure of the angle.

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