18 students are 100%-37,5%-40%=22,5%
18 students - 22,5%
x students - 100%
22,5x=18×100
x=80
Answer: 80 students
1) 22-17= 5
2) 48-23= 25
3) 29-19= 10
4) 59-47= 12
Add the ratio numbers to be your denominator
5+3+7+1=16
Pieces:
5/16 x124=38.75
3/16 x124=23.25
7/16 x124=54.25
1/16 x124=7.75
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Answer:
1. for the first one you will have to plot the point yourself
2. 4) a (-4, 3) b (-4, -2)
5) a (-1, -2) b (1, -3)
6) a (2, 1) b (2, 3)
3. you have to plot yourself
- if you want an explination on how to plot it reply back