Let's go:
8)
Total of senior students = 38
Total of senior students that preferred evening classes: 7
7/38 = aproximately 0,18 or 18%
Alternative A)
9)
Imagine being sold 100 desserts. Of these 100 desserts, 75% até chocolate, meaning 75 of these desserts are chocolate. Of these 75, 23% contains nuts. So:
75 × 0,23 = 17,25 = aproximately 17,3%
Alternative C)
I hope I helped you.
B for sure!!!!!!!!!!!!!!!!!!!
Data:
surface area=324 m²
lenght=5 m
width=12 m
SA=2(Iw+Ih+wh)
324 m²=2(5 m*12 m + 5 m h+12 m h)
324 m²=2(60 m²+17 m h)
60 m²+17 mh=324 m²/2
60 m²+17 mh=162 m²
17 mh=162 m²-60 m²
17 mh=102 m²
h=102 m²/17 m
h=6 m
Answer: the height is 6 m