Question

the angle of triangle are (x+10)°, (x+40)°,and(2x_30) ° find the value of x

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Answer 1

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The angles are (x+40),(x+10),(2x-30)

So,

(x+40)+(x+10)+(2x-30)=180. (Angle sum property)

x+40+x+10+2x-30=180

4x+20=180

4x=160

x=40

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