Answer:
<h2>This statement is true.</h2>
Step-by-step explanation:
The complete question is
The function F(x) = 2x/x+3 is an example of a rational function.
A. True
B. False
The answer is true, because a rational function is defined as those functions where the variable is placed in a denominator, which must be restricted, because all denominators cannot be equal to zero, otherwise the would be undetermined at that point. This point of lack of determination is shown in its graph as a asymptote.
For this case you can solve the problem by a simple rule of three:
72 ---> 100%
x ---> 30%
Clearing x we have:
x = (30/100) * (72) = 21.6 $
Then, we must subtract this value from the original price:
72-21.6 = 50.4 $
answer:
Gabriela pays $ 50.4 with the discount
We calculate as follows:
15 mL pure ethanol / 100 mL solution (400 mL) = 60 mL pure ethanol
32% = 32 mL pure ethanol/100 mL solution = 60 mL pure ethanol + x mL pure ethanol / (400 + x)
x = 100 mL pure ethanol was added to the solution ------> OPTION D
Answer:
57/41
Step-by-step explanation:
41 * x = 57
x = 57/41