4) The angles of a triangle are in the ratio 3:5:7. Find the measure of each angle.
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3x+5x+7x=180(sum of angles of a triangle is 180°)
15x=180
x=180/15
x=12°
1st angle= 3*12=36°
2nd angle=5*12=60°
3rd angle=7*12=84°
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Answer:Let the angles be3x,4x,5x,
Sum of angles of a triangle is 180'
3x+4x+5x=180
x=180/12
=15
The angles are 45',60',and75'.
Step-by-step explanation:
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