Let be the volume of 20% solution, the volume of the 60% solution. We want a total volume of 400 mL in the final mixture, so
Each mL of either solution will contribute a corresponding concentration, and in the final mixture we want the 400 mL to have a 40% concentration, which means we should also have
Solve the system and we get .
Answer:
Your answer would be A.
Step-by-step explanation:
okay so, with a best fit line, it needs to match up with your points. unless your points go up evenly. its not going to connect to all your points.
It's B. Since the slope is -8/1 x. Slope is rise/run. The other answers doesn't make sense since the x is put in a different place.
D = 5
e = 3
4.d.e - 3.e
= 4.5.3 - 3.3
= 60 - 9
= 51
<em>Have a nice day :)</em>
Answer:
x = 5/8 = 0.625
Step-by-step explanation: