declansmith949 declansmith949

22-09-2020
Mathematics

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angle a and angle b are supplementary to c if the measure of angle a is 12 less than 2 times the measure of angle c what is the measure of angle b

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arshuhamid3127 arshuhamid3127

23-09-2020

Answer:

Supplementary angle sum is 90°

a+b=c

c=90°

Step-by-step:

according to question (A.T.Q.)

a-12=2c
2c=a-12
c=a-12/2
since,
c=90°
90=a-12/2
90x2=a-12
180+12=a
a=192

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