99 points if you mr. foley wants alex to cut out a triangle to hang on the class bulletin board. he starts by cutting a line 8 inches long and two angles, 50° and 30°. what will the third angle measure? a) 80° b) 90° c) 100° d) 110°

To make a triangle, the angles must add up to 180. Add the two angles given to you: 50 + 30 = 80. Next you subtract the sum of those two angles from 180: 180 - 8 = 100. The third angle will measure C) 100°.

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The answer is: y would equal 3 because if you simplify the equation then it would be y= 3x+9 and if you divide 3x and 9 by 3 it would equal 3. y= 3