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Sholpan [36]
4 years ago
6

Determine the value of X. Can someone help? Explain steps on how to do this? Thanks

Mathematics
1 answer:
taurus [48]4 years ago
6 0
Angles on a straight line always adds up to 180°

The angle on the left side of 100° is, (180-100) = 80

Do the same with 80° and the angle beneath it (Remember! angles add up to 180° on a straight line).

Hence, 180 - (x+105) = 80
=> 180-80 = x+105
=> 100-105 = x
x = -5
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