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Gnoma [55]
3 years ago
11

If f(x)= x^3-2x+6, find f(-2)

Mathematics
1 answer:
Marina CMI [18]3 years ago
5 0
--8+4+6=2 Hope it helps :-)
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erica [24]

Answer:

x-intercept: -3 y-intercept: 3

Step-by-step explanation:

Substitute 0 for both variables.

-(0)=3

(0)=3

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2 years ago
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The total amount spent by some number of people on clothing and footwear in the years​ 2000-2009 can be modeled by the quadratic
Lapatulllka [165]

Answer:

This means that in the year 2008 the amount spent on clothing and footwear was a​ maximum.

Step-by-step explanation:

The quadratic function given is:

f(x) = -4.182x^{2} + 72.85x + 96.42

This is a quadratic function in the following format:

f(x) = ax^{2} + bx + c

When a < 0, as in this problem, the vortex is a maximum.

The vortex of the function is the point (x_{v}, y_{v}), in which

x_{v} = -\frac{b}{2a}

y_{v} = f(x_{v})

According to the​ model, in what year during this period was the amount spent on clothing and footwear a​ maximum?

The year is x in the function. The year in which the amount spent is a maximum is 2000(the initial year) added to x_{v}

In our secod order function, we have that a = -4.182, b = 72.85. So

x_{v} = -\frac{72.85}{2*(-4.182)} = 8.71

2000 + 8.71 = 2008.71.

This means that in the year 2008 the amount spent on clothing and footwear was a​ maximum.

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3 years ago
Find the value of x.
chubhunter [2.5K]

Answer:

  x = 5

Step-by-step explanation:

The sum of the side lengths shown is ...

  (2x) + (3x +2) + (4x +1) = 9x +3

That is the perimeter of the inscribed triangle. That triangle is similar to triangle ABC by a scale factor of 1:2, so the perimeter of ΔABC is ...

  2(9x +3) = 96 = 18x +6

  90 = 18x . . . . subtract 6

  90/18 = x = 5 . . . . . divide by the coefficient of x

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3 years ago
Tomaz realized that the tip of a second hand on a clock rotates about the center of the clock. He watched the second hand rotate
Thepotemich [5.8K]

Answer:

Step-by-step explanation:

Second hand on a clock rotates at rate 360 degrees per 60 seconds.

360 degrees - 60 sec

x degrees - 15 sec

90 clockwise rotation (none hand of a clock rotates counter-clockwise :))

5 0
3 years ago
Gkhoflkhlxrtuu;tdu8rp5[\78u
dybincka [34]

Answer:

What???

Step-by-step explanation:

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3 years ago
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