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Galina-37 [17]
2 years ago
9

How much is the new amount and the sale price between a $39.backpack that's on sale for 33%?

Mathematics
1 answer:
Vanyuwa [196]2 years ago
7 0
You multiply 39 by 0.33(same as 33% but as decimal) which equal 12.87. You subtract 39.00-12.87=$26.13 Sale price: $26.13 Discout: $12.87
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Please I need help !!!!!
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3 years ago
The length of a rectangle is 4 cm less than it’s width. If the area of the rectangle is 165 cm^2. What are the dimensions of the
Monica [59]

Answer:

The dimensions are 11 cm by 15 cm

Step-by-step explanation:

Area of a rectangle = (length)(width).

Let L represent the length and W the width.

Since L = W - 4, we have

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Thus, w^2 - 4W - 165 = 0.  We can solve for W using the quadratic formula:

a = 1, b = -4 and c = -165.  Thus,

        -(-4) ± √ [ (-4)² - 4(1)(-165) ]

W = ---------------------------------------

                        2

         4 ± √ [16 + 660 ]

W = ------------------------------

                       2

         4 ± √ [ 676 ]                    4 ± 26

W = -----------------------  =   W = -------------  =  W  = 2 ± 13

                  2                                  2

Thus, W is 2 + 13 = 15.  It cannot be negative, so we discard 2 - 13 = -11.

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3 years ago
Is 2x+4+3(2x-1) equivalent to 8x-2
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Answer: 2x+4+3(2x-1) is not equivalent to 8x-2. it is equivalent to 8x+1

Step by step solution:

Step 1 :

Equation at the end of step 1 :

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Step 2 :

Final result :

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