Answer:
Hello! I believe this is your answer:
It will take 7.5 hours to fill the tank.
Hope this helps, sorry if it's wrong!
The first one is x^2 -9x +20
The second one is x^2 -12x +20
The third one is x^2 +x -20
The fourth one is x^2 - 8x -20
There are 5 milliliters of compound A for every 7 milliliters of compound B.
So the ration between compound A and B will be:
A:B = 5:7
Total amount of drug = 684
Therefore, the amount of drug A needed will be:
Therefore, out of 684 milliliters 285 would be the compound A and the rest would be compound B
100° corresponding angles