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Contact [7]
3 years ago
7

Susan dissolves 20g of salt into 230g of water to create a saline solution. What percentage is the weight of the salt relative t

o the weight of the whole saline solution?
Mathematics
2 answers:
tatuchka [14]3 years ago
7 0

Answer:

8%

Step-by-step explanation:

the weight percentage of the salt relative to the weight of the whole saline solution =

20/(20+230) × 100% =

20/250 × 100% = 8%

Elina [12.6K]3 years ago
5 0

Answer:

If you take one part master solution and add four parts of distilled water, you now have a 20% salt water solution (1:4 ratio). Using the 'parts' method, if you merely add the two numbers of the 'parts' ratio together and then divide that into 100, it will give you the final dilution percentage.

Step-by-step explanation:

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Find the volume of the cylinder. Use 3.14 for
dexar [7]

Answer:

volume = 16956 meters

Step-by-step explanation:

volume = area * height

= pi * r^2 * height

= 3.14 * (30m/2)^2 * 27

volume = 16956 meters

4 0
3 years ago
What is the answer of it​
polet [3.4K]
The correct answer is A. 15,200.00


Explain


E= 1 -x/p

X= 293

P= 473 k


E= 1 -x/p = 1 - 293/473. = 0.38

So now E= 0.38 —> 38%

40, 000,000 x 0.38 = 15, 200, 000


Hope this help you

Stay safe :D
7 0
3 years ago
Read 2 more answers
Need to find shaded area of figure please help!
devlian [24]

Answer:

39 ft^2

Step-by-step explanation:

Find the area of the triangle and subtract the area of the square.

area of triangle = bh/2

area of square = s^2

shaded area = bh/2 - s^2

shaded area = (20 ft)(16 ft)/2 - (11 ft)^2

shaded area = 160 ft^2 - 121 ft^2

shaded area = 39 ft^2

7 0
3 years ago
Cafe Cookies
sashaice [31]

Answer:

i need points so im r

sorry

4 0
3 years ago
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Nolan has some nickels and some dimes. He has no more than 19 coins worth no less than $1.30 combined. If Nolan has 5 nickels, d
Allushta [10]

Answer:

number of dimes 11 to 14

Step-by-step explanation:

given data

coin = 19

worth no less = $1.30

Nolan nickles = 5

solution

we convert 5 cent to dollars, it will be

5÷100 = $0.05

and

dime is worth 10 cents

so it will be 10 ÷ 100 = $0.1

so we consider here x as the number when nickels.

and we consider y as the number of dimes.

so here we can say

x + y ≤ 19      ..........................1

as here no less than $1.30 combined.

so

0.05 x + 0.1 y ≥ 1.3       ......................2

and

when Nolan has 5 nickels

put x = 5 in eq 1

5 + y ≤ 19  

y ≤ 19 - 5

y ≤ 14

and

now we put x = 5 in eq 2

0.05 × 5 + 0.1y ≥ 1.3

0.25 + 0.1y ≥ 1.3

0.1y ≥ 1.3 - 0.25

0.1y ≥ 1.05

y ≥ 10.5

so all possible values for the number of dimes 11 to 14

7 0
3 years ago
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