Answer:
40 marbles
Step-by-step explanation:
because for every one blue marble there are two white marbels so if u time 2 by 20 it's 40
18.0 1
- 0.4 17.0
_____ - 0.4
-------> ____
17.6
X/(x+5) = (x-2)/(x+1)
x(x+1) = (x -2) (x + 5)
x^2 + x = x^2 - 2x + 5x - 10
x = 3x - 10
3x - x = 10
2x = 10
x = 5
answer is A
5
Answer: i think its just 1
Step-by-step explanation: