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sergij07 [2.7K]
3 years ago
11

What is the value of the digit 8 in Alaska's population

Mathematics
1 answer:
Yuri [45]3 years ago
7 0
Well I found the number that you are referring to: (686,293) right?
anyway,I'm assuming that it's talking about the number 8 in the number which would be the Ten Thousands place.

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If every gram of salt is 20.9% chlorine, how much is required to make a 220 ppm chlorine solution with 350 grams of water?
Temka [501]

Answer:

The amount of salt required is 0.3685 grams.

Step-by-step explanation:

20.9% of 1 gram of salt is chlorine, which means the grams of chlorine in 1 gram of salt are

\dfrac{20.9\%}{100\%} *1\: gram = 0.209g\: \text{chlorine}

Now, to make 220 ppm solution, it must be that

\dfrac{220}{10^6} = \dfrac{y}{350+y},

where y is the grams of chlorine required.

We rearrange the equation and solve for y:

220(350+y) = 10^6y

77000+220y =10^6y

77000 = (10^6-220)y

y = \dfrac{77000}{999780}

\boxed{y= 0.07702g}

since 1 gram of salt has 0.209 grams of chlorine, 0.07702g of chlorine corresponds to

\dfrac{0.07701}{0.209} = 0.3685g {\text{ of salt. }

Thus the amount of salt required is 0.3685 grams.

7 0
3 years ago
Which number makes the statement true
butalik [34]
C) 3

the sqrt of 12-3 is 3 and the sqrt of 36 is 6 so 3 is your answer
3 0
3 years ago
If a figure is a square, then it is a regular quadrilateral is this true or false (explain ) thanksd
VARVARA [1.3K]
False.

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6 0
3 years ago
How to slove step by step
wariber [46]
\frac{x+3}{12} = \frac{2}{7}

Multiply both sides by 12, so that we get rid of the fraction in x.

12 · (x+3)/12 = 2/7 · 12

Simplify.

x + 3 = 24/7

Then, subtract 3 from both sides, so that "x" gets isolated.

x = 24/7 - 3

Turn "3" into an improper fraction so that we could find the value of x easier.

3 = 21/3

So :

x = 24/7 - 21/7

Simplify.

x = 3/7

~Hope this helps!~


7 0
3 years ago
-c: infinitely many solutions, Help solve plss
trapecia [35]
I think it’s b cos u minus 43 and your left with 48x and 47x so divide by 47 and you get 1 point something x = to x so yeah probably none because no number will make that work so it’s b
7 0
3 years ago
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