Answer:
Step-by-step explanation:
a)
the sum of all angles in a quadrilateral must be 360º
y+88+25+35 = 360
y = 360=88-25-35
y = 212º
b)
the sum of all angles in an octagon must be 1080º
45+45+140+140+6y = 1080
6y = 1080-90-280
6y = 710
y = 710/6
y=~ 118,3º
A- how many women were on the train
B- how many people were on the train all together
-a^2 b^2 c^2 (a + b - c)
3.962%
39.62%
2.52%
25.2%