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AysviL [449]
3 years ago
8

you have $100 gift card to spend at a store. You buy a portable compact is play for $45. Contact us are on sale for $11 each. Ho

w many compact disc can you buy with the money remaining on a gift card?
Mathematics
2 answers:
4vir4ik [10]3 years ago
7 0
You are able to buy 5 compact disks because the money remaining would be 55, 100 - 45 = 55! So 11 times 5 equals 55, therefore you can buy 5! (: I hope this helped.
erik [133]3 years ago
4 0
100 - 45 = 55
you can get one more compact disc and be left with $10
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Answer:

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The general form of a circle is given as x^2+y^2+4x - 12y + 4 = 0. A) What are the coordinates of the center of the circle? B) W
Alex_Xolod [135]

Answer:

center = (-2, 6)

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Step-by-step explanation:

<u>Equation of a circle</u>

(x-a)^2+(y-b)^2=r^2

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Therefore, we need to rewrite the given equation into the standard form of an equation of a circle.

Given equation:

x^2+y^2+4x-12y+4=0

Collect like terms and subtract 4 from both sides:

\implies x^2+4x+y^2-12y=-4

Complete the square for both variables by adding the square of half of the coefficient of x and y to both sides:

\implies x^2+4x+\left(\dfrac{4}{2}\right)^2+y^2-12y+\left(\dfrac{-12}{2}\right)^2=-4+\left(\dfrac{4}{2}\right)^2+\left(\dfrac{-12}{2}\right)^2

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7 0
2 years ago
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8 0
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