Step-by-step explanation:
2/7
2×2 = 4
___
7×2 = 14
2×3 = 6
___
7×3 = 21
2×4 = 8
___
7×4 = 12
Answer:
underated.jay
Step-by-step explanation:
Answer:
120 liters of 60% alcohol solution is needed
Step-by-step explanation:
Let's assume
x liters of 60% alcohol solution is added
so, we get solution as


we are given
40 liters of a 20% alcohol solution is



so, total alcohol solution is

now, we can find total solutions
total solutions is

now, it is making 50% solution
so, we get

now, we can solve for x




So,
120 liters of 60% alcohol solution is needed
Answer:
y=3x
Step-by-step explanation:
In every collum, the x side increases by one but the y side increases by 3. which means it is multiplying.
0 x 3 = 0
1 x 3 = 3
2 x 3 = 6
3 x 3 = 9