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Anarel [89]
3 years ago
10

The price of a certain type of wine depends on its age described by the function price age

Mathematics
1 answer:
IceJOKER [234]3 years ago
8 0
<span>A. Price is the independent variable. B. Price depends on age. C Age is the input variable. D. Age is the independent variable. B.or C.</span>
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Please explain how to do this, I'm using all my points<br><br>A. 40 L<br>B. 80 L<br>C. 4 L <br>D. 8L
exis [7]

Answer: choice A. 40 liters

====================================

Explanation:

x = number of liters of the 50% alcohol solution

If we have x liters of 50% alcohol, then we have 0.50*x liters of pure alcohol. This is added to 0.90*40 = 36 liters of pure alcohol (from the 90% solution).

So far we have 0.50*x + 36. This expression represents the total amount of pure alcohol. We want a 70% solution, so we want 70% of the total 40+x meaning 0.50*x + 36 is to be set equal to 0.70*(40+x) and we solve for x as shown below

0.50*x + 36 = 0.70*(40+x)

0.50*x + 36 = 0.70*(40)+0.70*(x)

0.50*x + 36 = 28+0.70*x

36 - 28 = 0.70*x - 0.50x

8 = 0.20x

0.20x = 8

x = 8/0.20

x = 40

So that is why the answer is choice A. 40 liters

6 0
3 years ago
Multiple to list the next five multiples of 3
brilliants [131]

Answer:

6, 9, 12, 15, 18

Step-by-step explanation:

Finding multiples is simple, count by 3 for as many times as you can and there are your multiples.

7 0
3 years ago
Write the equation of a line that is perpendicular to y = 5 and that passes through the point (-7,-5).
Alik [6]

Answer:  x = -7

Step-by-step explanation:

x = -7 will be a vertical line passing through all y values, and perpendicular to y = 5

The attached graph shows the lines and the point.

7 0
3 years ago
A secret code consists of 3 digits, followed by 2 letters, followed by 1 of the following symbols: @
WINSTONCH [101]
The answer is B hope this helps
4 0
3 years ago
In 2011, it was estimated that the number of U.S households which had dogs as pets was 4.33 x 10^7 and the average number of dog
poizon [28]

The right answer is

D. 6.93 X 10^7

4 0
3 years ago
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