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Furkat [3]
3 years ago
7

Let f(x) = 2x3 – 4x. Find f(-2).

Mathematics
2 answers:
N76 [4]3 years ago
7 0

Answer:

Step-by-step explanation:

f(x) = 2x^3 - 4x.....find f(-2).....so sub in -2 for x

f(-2) = 2(-2^3) - 4(-2)

f(-2) = 2(-8) + 8

f(-2) = -16 + 8

f(-2) = -8 <==

djverab [1.8K]3 years ago
6 0

We have f(x)=2x^3-4x, to find f(-2) put -2 instead of x, f(-2)=2(-2)^3-4(-2)=-16+8=\boxed{-8}.

Hope this helps.

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Using the normal distribution, it is found that 0.13% of American women CAN NOT use the bicycles designed by this company.

<h3>What is Normal Probability Distribution?</h3>

The z-score of a measure X of a normally distributed variable with mean  and standard deviation  is given by:

z=\dfrac{x-\mu}{\sigma}

  • The z-score measures how many standard deviations the measure is above or below the mean.
  • Looking at the z-score table, the p-value associated with this z-score is found, which is the percentile of X.

The mean and the standard deviation are given, respectively, by:

\mu = 65\ \ \sigma= 3.5

The proportion of women that cannot use the bikes(smaller than 54.5 inches) is the p-value of Z when X = 54.5, hence:

z=\dfrac{x-\mu}{\sigma}

z = \dfrac{54.5-65}{3.5}

Z = -3

Z = -3 has a p-value of 0.0013.

0.0013 = 0.13% of American women CAN NOT use the bicycles designed by this company.

More can be learned about the normal distribution at brainly.com/question/27850813

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4 0
2 years ago
Amanda is 15 years old. She has two sisters, Britney, who is 12 years old, and Caitlin, who is the youngest. Amanda's age is equ
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C. 12 - 7 = 5 5 * 3 = 15 = Amanda's age!

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We have two classrooms and seven packages.

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Which is an equation of the line containing the points (4,6) and (6,10) in standard form?
algol13
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What is the correct answer after multiplying both sides of the inequality -x ≥ 5 by -1?
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-x ≤ -5

Step-by-step explanation:

I just know

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