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30 March, 04:55

Triangle ABC has angle measures as shown. Angle A = x-5 angle B = 3x+30 C = 35.

A) What is the value of x? Show your work.

B) what are the values of the two unknown angles? (show your work)

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  1. 30 March, 05:01
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    We know that the sum of the measure of the angles in a triangle is 180 degrees

    so A+B+C=180

    (x-5) + (3x+30) + 35=180

    x-5+3x+30+35=180 add like terms

    4x=60=180

    4x=120 divide both sides by 4

    x=30

    angle A=x-5=30-5=25

    angle b=3x+30=90+30=120

    angle C is 35
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