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Katena32 [7]
4 years ago
5

You are working as a clinical chemist in charge of testing of the blood samples. you are required to fix a sodium chloride solut

ion with water in the ratio of 2:3 .
a) starting with 580ml of the sodium chloride solution, how much water needs to be added?

B) Give your answer in standard form to the appropriate number of significant figures

Mathematics
1 answer:
Dafna11 [192]4 years ago
3 0
\bf \cfrac{sodium~chloride}{water}\qquad 2:3\qquad \cfrac{2}{3}\implies \cfrac{2\cdot \frac{580}{2+3}}{3\cdot \frac{580}{2+3}}\implies \cfrac{2\cdot 116}{3\cdot 116}\implies \cfrac{232}{348}
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Vesnalui [34]

Answer:

x = ⅓ acos(y/7) + π/18, [-7, 7/2]

Step-by-step explanation:

y = 7 cos(3x − π/6)

Solving for x:

y/7 = cos(3x − π/6)

acos(y/7) = 3x − π/6

acos(y/7) + π/6 = 3x

x = ⅓ acos(y/7) + π/18

The domain of x is the same as the range of y.

When x = π/6:

y = 7 cos(3π/6 − π/6)

y = 7 cos(π/3)

y = 7/2

When x = 7π/18:

y = 7 cos(21π/18 − π/6)

y = 7 cos(π)

y = -7

So the domain of x as a function of y is [-7, 7/2].

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4 years ago
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Marianna [84]

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Step-by-step explanation:

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6 0
3 years ago
Math i need help<br>please​
Tanzania [10]

Answer:

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8 0
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on the grid below, draw and label an aquarium shaped like a rectangular prism with a volume of 8,000 cubic inches. (Hint: A cube
n200080 [17]
If you want an aquarium in shape of a cube with volume of 8000, then use the formula for volume of cube to find the length of one side:
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3 0
4 years ago
HELP NEEDED ASAP
dedylja [7]

Answer:

The volume is 160

Step-by-step explanation:

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3 years ago
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