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3 years ago

Adding and subtracting functions f (n ) = −2n^3 + 3n^2g(n) = −2n − 4 Find f (n )+ g(n)

Mathematics

2 answers:

dezoksy [38]3 years ago

5 0

Answer: f(n) + g(n) = -2n^3 + 3n^2 - 2n - 4

Step-by-step explanation:

Honestly i dont know if that answer is correct

im just trying to gain points

but i copied it from someone else

2n +5y=6 eggs

Serhud [2]3 years ago

3 0

Answer: f(n) + g(n) = -2n^3 + 3n^2 - 2n - 4

Explanation:

f(n) + g(n) = (-2n^3 + 3n^2) + (-2n - 4)
f(n) + g(n) = -2n^3 + 3n^2 - 2n - 4

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kakasveta [241]

Answer:

Create a function representing number of published articles per month:

$a=12m+60$

Where:

a = total number of articles published
m = number of months
12 = slope = number of articles published per month
60 = y-intercept = number of published articles at the start (month 0)

Now substitute in the values of m to get the a-value:

m = 1 → a = 12(1) + 60 = 72
m = 3 → a = 12(3) + 60 = 36 + 60 = 96
m = 4 → a = 12(4) + 60 = 48 + 60 = 108
m = 9 → a = 12(9) + 60 = 108 + 60 = 168

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2 years ago

Which value satisfies the inequality -2x + 8 + 5x > 2x + 1? A) -15 B) -10 C) -7 D) -5

Novosadov [1.4K]

-2x + 8 + 5x > 2x + 1
3x + 8 > 2x + 1
x > -7

answer
D) - 5

5 0

3 years ago

Read 2 more answers

450 high school freshmen were randomly selected for a national survey. Among survey participants, the mean grade-point average (

umka21 [38]

Answer:

The margin of error is of 0.01.

Step-by-step explanation:

We have that to find our $\alpha$ level, that is the subtraction of 1 by the confidence interval divided by 2. So:

$\alpha = \frac{1 - 0.7}{2} = 0.15$

Now, we have to find z in the Z-table as such z has a p-value of $1 - \alpha$ .

That is z with a pvalue of $1 - 0.15 = 0.85$ , so Z = 1.037.

The margin of error is of:

$M = z\frac{\sigma}{\sqrt{n}}$

In which $\sigma$ is the standard deviation of the population and n is the size of the sample.

Standard deviation was 0.21.

This means that $\sigma = 0.21$

Sample of 450:

This means that $n = 450$

What is the margin of error, assuming a 70% confidence level, to the nearest hundredth?

$M = z\frac{\sigma}{\sqrt{n}}$

$M = 1.037\frac{0.21}{\sqrt{450}}$

$M = 0.01$

The margin of error is of 0.01.

4 0

3 years ago

Bill and Bob cycle in opposite directions. Bill cycles at 12 km/h

Sliva [168]

Answer:

You arrive home after driving 3 hours and 40 minutes.

Step-by-step explanation:

7 0

3 years ago

In 1898 L. J. Bortkiewicz published a book entitled The Law of Small Numbers. He used data collected over 20 years to show that

attashe74 [19]

Answer:

(a) The probability of more than one death in a corps in a year is 0.1252.

(b) The probability of no deaths in a corps over 7 years is 0.0130.

Step-by-step explanation:

Let X = number of soldiers killed by horse kicks in 1 year.

The random variable $X\sim Poisson(\lambda = 0.62)$ .

The probability function of a Poisson distribution is:

$P(X=x)=\frac{e^{-\lambda}\lambda^{x}}{x!};\ x=0,1,2,...$

(a)

Compute the probability of more than one death in a corps in a year as follows:

P (X > 1) = 1 - P (X ≤ 1)

= 1 - P (X = 0) - P (X = 1)

$=1-\frac{e^{-0.62}(0.62)^{0}}{0!}-\frac{e^{-0.62}(0.62)^{1}}{1!}\\=1-0.54335-0.33144\\=0.12521\\\approx0.1252$

Thus, the probability of more than one death in a corps in a year is 0.1252.

(b)

The average deaths over 7 year period is: $\lambda=7\times0.62=4.34$

Compute the probability of no deaths in a corps over 7 years as follows:

$P(X=0)=\frac{e^{-4.34}(4.34)^{0}}{0!}=0.01304\approx0.0130$

Thus, the probability of no deaths in a corps over 7 years is 0.0130.

6 0

3 years ago

Adding and subtracting functions f (n ) = −2n^3 + 3n^2g(n) = −2n − 4 Find f (n )+ g(n)​

Adding and subtracting functions f (n ) = −2n^3 + 3n^2g(n) = −2n − 4 Find f (n )+ g(n)