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s344n2d4d5 [400]
3 years ago
10

Solve the system 5x+3y=-9 & -2+y=8

Mathematics
1 answer:
Illusion [34]3 years ago
5 0
X=-39/5 and y=10 :) i hope this helps you out !
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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 = ---------------------------------------

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

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         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.

If the width, W, is 15, then the length is 4 less, or L = 11.

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What is 6,007,200 in standard form
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54 = 2x³

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27 = x³

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