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Zanzabum
2 years ago
9

PLEASE HELP ME AS SOON AS POSSIBLE

Mathematics
1 answer:
tatyana61 [14]2 years ago
3 0

a) The linear function that models the population in t years after 2004 is: P(t) = -200t + 29600.

b) Using the function, the estimate for the population in 2020 is of 26,400.

<h3>What is a linear function?</h3>

A linear function is modeled by:

y = mx + b

In which:

  • m is the slope, which is the rate of change, that is, by how much y changes when x changes by 1.
  • b is the y-intercept, which is the value of y when x = 0, and can also be interpreted as the initial value of the function.

The initial population in 2004, of 29600, is the y-intercept. In 12 years, the population decayed 2400, hence the slope is:

m = -2400/12 = -200.

Hence the equation is:

P(t) = -200t + 29600.

2020 is 16 years after 2004, hence the estimate is:

P(16) = -200(16) + 29600 = 26,400.

More can be learned about linear functions at brainly.com/question/24808124

#SPJ1

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charle [14.2K]

Answer:

So the value of the test statistic is -0.85.

Step-by-step explanation:

We know that a sample of 1800 computer chips revealed that 53% of the chips do not fail in the first 1000 hours of their use. The company's promotional literature states that 54% of the chips do not fail in the first 1000 hours of their use.

We get that:

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We calculate the standar deviation:

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We calculate the value of the test statistic:

z=\frac{p_1-p_2}{\sigma}=\frac{0.53-0.54}{0.01176}=-0.85

So the value of the test statistic is -0.85.

5 0
4 years ago
If f(x) = 4x ^ 2 - 3 and g(x) = x + 1 , find (f - g)(x) O A. 4x ^ 2 - x - 2 B. x - 4x ^ 2 - 2 O C. 4x ^ 3 - 3 O D. 4x ^ 2 - x -
Yuliya22 [10]

Answer:

D

Step-by-step explanation:

If f(x) = 4x ^ 2 - 3 and g(x) = x + 1 , find (f - g)(x)

A. 4x ^ 2 - x - 2

B. x - 4x ^ 2 - 2

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D. 4x ^ 2 - x - 4

(f - g)(x) = f(x) - g(x)

4x ^ 2 - 3 - (x + 1 )                  Multiply the brackets by the negative.

4x ^ 2 - 3 -x - 1                       Add like terms.

4x ^ 2 - x - 4                           Final Answer

5 0
3 years ago
<img src="https://tex.z-dn.net/?f=HELP%20%5C%3A%20%20ME%20%5C%3A%20%20PLEASE%20" id="TexFormula1" title="HELP \: ME \: PLEASE
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Answer:

22°

Step-by-step explanation:

as we know from the angle sum property of the triangle- the sum of all angles of a triangle is 180°

So now in (d)

79°+79°+x=180°

158°+x=180°

x=180°-158° (transversal property)

x=22°

Hope it helps

8 0
3 years ago
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