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:
For f(x), the answer is 0. For g(x), the answer is -1
Step-by-step explanation:
You would plug in the -1 to each x in the equation.
Answer:
Option b. False
Step-by-step explanation:
we know that
A fraction is the quotient between the numerator and denominator.
To convert a fraction into a decimal number, divide the numerator by the denominator
so
The statement is False
Answer:
$31.5375~31.53
Step-by-step explanation:
25.23 divided by 4 is 6.3075
so 25.23 +6.3075=31.5375
