Answer:
11
Step-by-step explanation:
The percent of the mark down would be 10%. If you subtract 81 from 90, you get 9. Then divide 90 by 9 and you get 10. Hope this helps!
Answer:
5x-20=3x(alternate angle)
5x-3x=20
2x=20
x=20/2
x=10
now ,
2y +4y+5x-20=180(sum of angles of a triangle)
6y+50-20=180
6y+30=180
6y=180-30=150
y=150/6
y=25
hope this will help
The answer to your question is 10:10:20 because it doubles from the 2 people.
You have 2 books abt the desert and 8 abt the rain forest
and 4×2=8
so they're 4 groups
hope this is the right awnser since I'm not smart :)
