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blsea [12.9K]
3 years ago
14

A swimming pool with the

Mathematics
1 answer:
musickatia [10]3 years ago
8 0

Answer:

<h2>$12.6</h2>

Step-by-step explanation:

Step one:

given that the dimensions are

length=3cm

width=4cm

hieght= 7cm

the volume of the pool is= lwh

volume=3*4*7= 84cm^3

Step two:

the cost of filling

we are told that 1cm^3 will cost $0.15

               hence 84cm^3 will cost x

cross multiply

x= 0.15*84

x=12.6

<u>The cost of filling the pool will be $12.6</u>

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You can get this by taking the average of the two. 
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For all values of x, which expression is equivalent to (3x + 2) + 2(3x + 2)?
IRISSAK [1]

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3 years ago
21 Maria sold small boxes of candy for $1 and
Anna35 [415]

Answer:

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Step-by-step explanation:

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In principle Linear Equations are algebraic expressions denoting a relationship between a Dependent variable y and an Independent variable x. In a system of Two Linear equations we have<u> two equations</u> of the same variable sets (thus Two Independent variables) so in this case both y and x will be variable terms.

Now with respect to the question and the given information, here our two Variable terms will be the small and the large boxes.

<u>Given Information:</u>

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Thus from the above we can obtain one equation denoting the Total Number of Boxes sold and one equation denoting the Total Profit from sold boxes, respectively, as follow:

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Now we have a system of two linear equations which we can solve and find the number of small and large boxes, s and l respectively.

From Eqn(1) we see that

s=30-l      Eqn(3).

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3l=30

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So we know that they were<u> 10 Large Boxes and 20 Small Boxes sold</u>, thus to answer our question, there where 10 more Small boxes sold than Large boxes.

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Answer:

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I hope this is useful for you

regards

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