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denpristay [2]
4 years ago
11

Paulie ordered 250 pens and 250 pencils. The pens cost 11 cents more then the pencils. If her order costs 42.50 how much does it

cost of each pen and pencil. I need help ASAP!!!!
Mathematics
1 answer:
lidiya [134]4 years ago
7 0

Answer:

The cost of each pen is <u>$0.14</u> and the cost of each pencil is <u>$0.03</u>.

Step-by-step explanation:

Given:

Paulie ordered 250 pens and 250 pencils.

The pens cost 11 cents more than the pencils.

Her order costs $42.50.

Now, to find the cost of each pen and pencil.

Let the price of a pencil be x.

So, the price of 250 pencils = 250x.

And the price of a pen be x+0.11.

Thus, the price of 250 pens = 250(x+0.11).

Now, to get the cost of each pen and pencil:

According to question:

250x+250(x+0.11)=42.50

250x+250x+27.50=42.50

500x+27.50=42.50

<em>Subtracting both sides by 27.50 we get:</em>

500x=15

<em>Dividing both sides by 500 we get:</em>

x=0.03

So, the price of a pencil = $0.03.

And the price of a pen = x+11=0.03+0.11=\$0.14.

Therefore, the cost of each pen is $0.14 and the cost of each pencil is $0.03.

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A) =27.2
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A line contains the points R (-1, 8) S (1, 4) and T (6, y). Solve for y. Be sure to show and explain all work.
Nikitich [7]

Given:

A line contains the points R(-1, 8), S(1, 4) and T(6, y).

To find:

The value of y.

Solution:

Three points are collinear if:

x_1(y_2-y_3)+x_2(y_3-y_2)+x_3(y_1-y_2)=0

A line contains the points R(-1, 8), S(1, 4) and T(6, y). It means, these points are collinear.

-1(4-y)+1(y-8)+6(8-4)=0

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Subtract 12 from both sides.

2y=-12

Divide both sides by 2.

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3 0
3 years ago
Exact = 50 Approximate = 45
Nikitich [7]

Answer:

Approximate of error = 11.11 % (Approx.)

Step-by-step explanation:

Given:

Exact value = 50

Approximate value = 45

Find:

Approximate of error

Computation:

Approximate of error = [(Exact value - Approximate value)/Approximate value]100

Approximate of error = [(50 - 45)/45]100

Approximate of error = [(5)/45]100

Approximate of error = [0.11111]100

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3 years ago
A rectangular parking area measuring 5000 ft squared is to be enclosed on three sides using​ chain-link fencing that costs ​$5.5
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Answer:

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Minimum price: $1658.31

Step-by-step explanation:

Let's call the length of the parking area 'x', and the width 'y'.

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x * y = 5000

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From the first equation, we have that y = 5000/x

Using this value in the equation for P, we have:

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To find the minimum of this function, we need to take its derivative and then make it equal to zero:

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diamong [38]

Answer:

Hi there

Your answer is

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