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ryzh [129]
3 years ago
11

R + (-5r) Please explain how it's done.

Mathematics
1 answer:
Lisa [10]3 years ago
7 0

Answer:

-4r

Step-by-step explanation:

r + (-5r)

1r + (-5r)

Factor out an r

r( 1 -5)

One minus 5 is negative 4.   If you have one dollar and you borrow five dollars,  how much did you borrow?  4  but that 4 is borrowed so it is negative


r (-4)

-4r



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A pair of Descartes jeans costs $120. If the tax is 13%, how much does the pair of jeans cost including tax?
ivanzaharov [21]

Answer:

$135.60

Step-by-step explanation:

120*13%=15.6

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Elden [556K]

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Step-by-step explanation:

If the number is real and rational and non-natural, this means that it can be any number in the negative number space.

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Cheers.

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2 years ago
Karen collects bugs. Each of her rare beetles weighs 4 ounces. The total weight of her collection is 32 ounces. How many pounds
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2 years ago
Write the equation for a parabola with a focus at ( 7, 2) and a directrix at y = -2<br> y = ?
horrorfan [7]
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It's not just the '4' that is important, it's '4a' that matters.
This type of parabola has a directrix at x = -a, and a focus at (a, 0). By writing the equation as it is, the position of the directrix and focus are readily identifiable.
For example, y2 = 2.4x doesn't say a great deal. Re-writing the equation of the parabola as y2 = 4*(0.6)x tells us immediately that the directrix is at x = -0.6 and the focus is at (0.6, 0)
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PLEASE HELP !!!!!!!!!!!!!
Akimi4 [234]

9514 1404 393

Answer:

  the multiplicity is 4

Step-by-step explanation:

The graph shows a root at x = -2 that has a multiplicity of 2. You know the multiplicity is even, because the graph does not cross the x-axis. The multiplicity is 2 because the general shape of the graph in that area matches that of a quadratic (parabola).

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When we draw a graph with a multiplicity of 6 at x=4, we find the ratio of the peaks near x=-4 and x=0 to be different from that shown here. The suggests that the multiplicity of the root at x=4 is exactly 4.

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3 years ago
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