Into Classix Date / Page. Q PQR is a line The value of a is it? . us (3a +5 ) ( 2a -25) options (A) 40 B) 45(c) 55 d) 60
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Answer:
option A (40°)
Step-by-step explanation:
angle POQ+angle QOR =180°(total angle of a straight line)
(3a + 5)° + (2a -25) = 180°
5a - 20 = 180°
5a=180+20
5a=200
a=200/5
a=40 (a)
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