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dezoksy [38]
3 years ago
10

On the day a video was posted online, 5 people watched the video. The next day, the number of viewers have doubled. This trend c

ontinues each day. Write an equation modeling the views, v, as a function of time
Mathematics
1 answer:
KiRa [710]3 years ago
3 0

Answer:

2v+5

hope this helps :)

Step-by-step explanation:

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Find 54 is 90% of what number
aleksandrvk [35]
54=.9x Solve for x. x=54/.9=60
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2 years ago
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Write the polynomial in factored form as a product of linear factors f(r)=r^3-9r^2+17r-9
adelina 88 [10]

Answer:

  f(r) = (x -1)(x -4+√7)(x -4-√7)

Step-by-step explanation:

The signs of the terms are + - + -. There are 3 changes in sign, so Descartes' rule of signs tells you there are 3 or 1 positive real roots.

The rational roots, if any, will be factors of 9, the constant term. The sum of coefficients is 1 -9 +17 -9 = 0, so you know that r=1 is one solution to f(r) = 0. That means (r -1) is a factor of the function.

Using polynomial long division, synthetic division (2nd attachment), or other means, you can find the remaining quadratic factor to be r^2 -8r +9. The roots of this can be found by various means, including completing the square:

  r^2 -8r +9 = (r^2 -8r +16) +9 -16 = (r -4)^2 -7

This is zero when ...

  (r -4)^2 = 7

  r -4 = ±√7

  r = 4±√7

Now, we know the zeros are {1, 4+√7, 4-√7), so we can write the linear factorization as ...

  f(r) = (r -1)(r -4 -√7)(r -4 +√7)

_____

<em>Comment on the graph</em>

I like to find the roots of higher-degree polynomials using a graphing calculator. The red curve is the cubic. Its only rational root is r=1. By dividing the function by the known factor, we have a quadratic. The graphing calculator shows its vertex, so we know immediately what the vertex form of the quadratic factor is. The linear factors are easily found from that, as we show above. (This is the "other means" we used to find the quadratic roots.)

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The kerwoods went out to eat at Chili's if there's a bill if they're bill was 58.16 they get in they gave their serve a 15% tip
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8.724 15% of 58.16 is 8.724$
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Write another fraction that is equivalent to 4/5. And draw a diagram show that they are equal. Then find the equivalent decimal
babymother [125]
8/10

4x2=8 
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this is how you know they are equal
3 0
3 years ago
Need this answer asap giveing 20 points!
katen-ka-za [31]

Answer:

ok um what’s the question?

6 0
3 years ago
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