Answer:
the angle is flat, measures 180°, the sum of the 2 angles = 180°
we put the equation
5p+7+4p+2= 180
9p+9=180
9p = 180-9
p = 19°
we calculate the measure of the angles:
5p+7 = 5*19+7=102°
4p+2 = 4*19+2=78°
Explanation:
p = 19
(5p + 17)° and (4p + 2)° are a linear pair and sum to 180°
sum the 2 angles and equate to 180
5p + 7 + 4p + 2 = 180
9p + 9 = 180 ( subtract 9 from both sides )
9p = 171 ( divide both sides by 9 )
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