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evablogger [386]
4 years ago
11

A pharmacist has 80 milliliters of a 25% saline solution. which expression can be used to find the percentage concentration of t

he final solution if she adds x milliliters of a 10% saline solution?
Mathematics
2 answers:
GREYUIT [131]4 years ago
6 0

Answer: The correct answer is D. y=0.25(80)+0.1x/80+x  

Step-by-step explanation:

Andre45 [30]4 years ago
3 0

Answer:

The correct answer is D on edgen..

y=0.25(80)+0.1x

_____________ . 100

80 + x

Step-by-step explanation:

Just took the quiz, got it correct.

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Jim bought 3 cds at a cost of $14.99 each what will he pay including 6% sales tax
Charra [1.4K]

14.99 *3 = 44.97

44.97*1.06 =47.6682, round off to $47.67 with tax

3 0
4 years ago
Mr. Faber has 84 pear trees and 180 apple trees. He wants to plant the trees in rows of equal width. What is the largest amount
Galina-37 [17]
I believe it is 15. Hope that helps!
8 0
3 years ago
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Plz help i dont have much time
Kryger [21]

Answer:

I believe it's asking for the additive inverse so,

1. 5

2. -28

3. 10.4

4. -0.875

5. 0

6. 8,003

Step-by-step explanation:

hope this is what u need

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3 0
3 years ago
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Evaluate 13 - 0.75w + 8x when w = 12 and x = 1/2
sashaice [31]

Answer:

8

Step-by-step explanation:

13 - 0.75 (12) + 8 (0.5)

13 - 0.75 (12) + 4

13 - 9 + 4

4 + 4

8

3 0
4 years ago
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A cylindrical tank with a radius of 12 inches and a height of 20 inches is full of water. Does the tank have enough water to fil
Reptile [31]

Answer:

Yes, it can.

Step-by-step explanation:

To know if you can fill all the water balloons with the tank, the first thing is to calculate the volume of each one.

Volume of the tank, is a cylinder, whose volume is given as follows:

Vc = Pi * Rc ^ 2 * h

 

The radius of the cylinder has a value of 12 inches and the height of 20 inches. Thus:

Vc = 3.14 * (12) ^ 2 * 20 = 9043.2 inches ^ 3

Now, the volume of each globe that is a sphere is given by the following equation:

Ve = (4/3) * Pi * Re ^ 3

Being the radius of the sphere of 2, we have to:

Ve = (4/3) * 3.14 * 2 ^ 3 = 33.5 inches ^ 3

Now to know if you can fill all the balloons, we calculate the volume ratio of the tank and a balloon.

Vc / Ve = 9043.2 /33.5 = 269.95

Therefore, it can fill the 250 balloons because it has the capacity to carry approximately 269 balloons.

8 0
3 years ago
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