emilyteber209
emilyteber209
16-10-2021
Mathematics
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ashrafalikhan79
ashrafalikhan79
16-10-2021
Angle C = 180-115 = 65 ( straight line)
Angle B = 4y + 10
180 = ( 3y+10 +4y +65 )
180 = 7y + 75
7y = 105
y = 15
Therefore angle B = 4(15) + 10 = 70 degrees
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