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prisoha [69]
3 years ago
10

A chemist has 0.2 liters of an acid solution whose acid concentration is 65%. How many liters of pure water should be added to l

ower the concentration to 50%?
Mathematics
1 answer:
lorasvet [3.4K]3 years ago
4 0

Answer:

0.06

Step-by-step explanation:

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0 A public beach in Arkansas charges non- residents $12 per day for a fishing license and $3.50 per day for live bait. Arkansas
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Non Residents:
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f(X)=x+174

Now, we equate functions:

15.5x=x+174    (this is the equation)
15.5x-x=174
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Read 2 more answers
Two times x is 8 more than y. The sum of x and two times y is 14. Write two equations and graph to find the value of y.
Sauron [17]

Option B: $y=4$ is the value of y

Explanation:

It is given that "Two times x is 8 more than y". Writing it as expression, we have,

2x=8+y

It is also given that "The sum of x and two times y is 14". Writing it as expression, we have,

x+2y=14

To find the value of y, let us solve the two equations using substitution method.

From the equation 2x=8+y , let us find the value of x.

x=\frac{8+y}{2}

x=\frac{8}{2} +\frac{y}{2}

x=4+\frac{y}{2}

Now, substituting x=4+\frac{y}{2} in the equation x+2y=14 , we get,

4+\frac{y}{2}+2y=14

      4+\frac{5y}{2} =14

            $\frac{5 y}{2}=10$

            5y=20

              $y=4$

Thus, the value of y is $y=4$

8 0
3 years ago
A function has a constant doubling time. What type of function does this<br> represent?
SIZIF [17.4K]

Answer:

  an exponential function

Step-by-step explanation:

An exponential function has the characteristic that it increases by a constant factor when the independent variable increases by a constant increment. The function you describe is an exponential function.

__

It can be written in the form ...

  f(t) = f(0)·2^(t/d) . . . . . where d is the doubling time

6 0
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