Answer:
Step-by-step explanation:
R = 180°-P-Q = 180°-(P+Q) = 180°-126° = 54°
9x = 54°
x = 6°
2t+b=8
e+t+b=8.5
2e+2t=10
uhm..
what expressions?
7 hrs
1hr = 750
? = 5250
5250/750 = 7