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 .
A = 3.14 (2)^2
A = 3.14 (4)
A = 12.56
answer
A = 12.56
Let's solve your inequality step-by-step.
x+11>2
Step 1: Subtract 11 from both sides.
x+11−11>2−11
x>−9
Answer:
x>−9
Answer:
Step-by-step explanation: