africangenius
africangenius
12-04-2017
Mathematics
contestada
What is the measurement of angle a?
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Sxerks
Sxerks
12-04-2017
Assuming we have parallel lines, we can solve for x.
Since a = 3x - 10 (vertically opposite angles are equal),
3x - 10 = 2x + 15 (alternate angles are equal)
x = 25
Hence, angle a = 3(25) - 10 = 65°
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