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20.02.2020 •
Mathematics
A scientist mixes x liters of water into a container that has 10 liters of a mixture that is 12% salt and 88% water. The function f(x) = 1.2 / (x+10) represents the percent of the sat in the new mixture. How many liters of water must be added to make 1% salt mixture
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Ответ:
Using the function given, the amount of water thst must be added to make 1% salt mixture is 110 litres.
The percentage of salt mixture is represented by the function :
Percentage of salt mixture = f(x) f(x) = 1% = 1/100 = 0.01The equation can be expressed thus :
Cross multiply :
(x + 10)(0.01) = 1.2
0.01x + 0.1 = 1.2
0.01x = 1.2 - 0.1
0.01x = 1.1
x = 1.1 ÷ 0.01
x = 110
Hence, 110 litres of water must be added.
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Ответ:
110 liters of water
Step-by-step explanation:
Let
x ----> liters of water
f(x) ----> the percent of the sat in the new mixture
we have
For
substitute in the equation
solve for x
Ответ:
A
Step-by-step explanation:
I know its right and i never had a wrong answer before