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FrozenT [24]
3 years ago
15

Ann purchased 6 packs of red pens, 10 packs of blue pens, and 8 packs of black pens. If there are 6 pens in each pack, how many

pens did Ann purchase altogether?
Mathematics
1 answer:
marishachu [46]3 years ago
7 0
6 packs is greater because 2-3=-1
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DerKrebs [107]

9514 1404 393

Answer:

  (x, y) = (4, 4)

Step-by-step explanation:

If you attempt to solve this by clearing fractions, you end up with an extraneous solution. Here, we'll solve the linear equations ...

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Now, we can get back to solving for x and y.

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  8x = 32 . . . . . . . . . add the two equations

  x = 4

  3y = 28 -4x = 28 -4(4) = 12 . . . . . use x in the equation for 'a'; rearrange

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The solution to the system of equations is (x, y) = (4, 4).

_____

<em>Additional comment</em>

If you graph these equations, you find they describe hyperbolas that intersect at (0, 0) and (4, 4). The "solution" (0, 0) is extraneous, as both equations are undefined there.

7 0
2 years ago
Simplify fully<br> A) <br> X^7 / X^3 <br><br><br> B)<br> Y^5 / Y^4
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Hi,

\frac{x^{a} }{x^{b} } =x^{a-b}

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b)

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;)

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2 years ago
A photograph 5 inches wide by 6 inches high is to be enlarged so that the new height is 20 inches. what will the width of the en
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