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pishuonlain [190]
2 years ago
5

Perfrom the indicated operation

Mathematics
2 answers:
Aleks [24]2 years ago
6 0

Answer:

\dfrac{c}{3(c+2)}

Step-by-step explanation:

\dfrac{c^2+4c}{c^2-4} \div \dfrac{3c+12}{c-2}=\dfrac{c^2+4c}{c^2-4} \times  \dfrac{c-2}{3c+12}=\dfrac{(c^2+4c)(c-2)}{(c^2-4)(3c+12)}

Factor c^2-4:    c^2-4=(c-2)(c+2)

\implies\dfrac{(c^2+4c)(c-2)}{(c+2)(c-2)(3c+12)}

Cancel the common factor  (c-2):

\implies\dfrac{(c^2+4c)}{(c+2)(3c+12)}

Factor  c^2+4c:  c^2+4c=c(c+4)

Factor  3c+12:  3c+12=3(c+4)

\implies\dfrac{c(c+4)}{3(c+2)(c+4)}

Cancel the common factor  (c+4):

\implies\dfrac{c}{3(c+2)}

max2010maxim [7]2 years ago
4 0

Answer: (6,0)

Step-by-step explanation:

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The admission fee at a local zoo is $1.50 for children and $5.00 for adults. On a certain day, 3000 people enter the zoo and $9,
vlabodo [156]

1600 children and 1400 adults attended

<h3>How to determine the number of adults?</h3>

Let the children be x and adult be y.

So, we have the following equations:

x + y = 3000

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Make x the subject in x + y = 3000

x = 3000 - y

Substitute x = 3000 - y  in 1.5x + 5y = 9400

1.5(3000 - y) + 5y = 9400

Expand

4500 - 1.5y + 5y = 9400

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Divide both sides by 3.5

y = 1400

Substitute y = 1400 in x = 3000 - y

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x = 1600

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2 years ago
Classify each pair of numbered angles.
kifflom [539]
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What is the midpoint of the vertical line segment graphed below? (2, 4), (2, -9) A. (4, -5). B. (2, -5/2). C. (2, -5). D. (4, 5/
omeli [17]

Answer:

B. (2, -\frac{5}{2})

Step-by-step explanation:

Given:

(2, 4) and (2, -9)

Required:

Midpoint of the vertical line with the above endpoints

Solution:

Apply the midpoint formula, which is:

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Where,

(2, 4) = (x_1, y_1)

(2, -9) = (x_2, y_2)

Plug in the values into the equation:

M(\frac{2 + 2}{2}, \frac{4 + (-9)}{2})

M(\frac{4}{2}, \frac{-5}{2})

M(2, -\frac{5}{2})

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