X=2 to x=7 calculate the average rate of change for the given function

aircraft costs $2901 dollars per hour to operate. The algebraic expression 2901t gives the total cost to operate the aircraft f

Cloud [144]

Answer:

$20016.90

Step-by-step explanation:

all you do is multiply. easy-peasy

2901x6.9=20016.90

6 0

3 years ago

Tony has a jar that contains 16 red, 8 blue, 7 black, and 1 yellow marble. What is the theoretical probability of selecting a bl

suter [353]

Answer:

$\frac{1}{4}$

Step-by-step explanation:

Number of blue marbles = 8

Total number of marbles = 16+8+7+1=32

$probability\: of \:selecting\: a\: blue\; marble\\=\frac{Number\: of\:blue\: marbles}{Total\: number\: of\: marbles} \\\\=\frac{8}{32} \\\\=\frac{1}{4}$

6 0

3 years ago

The price of an item has dropped to $42 today. Yesterday it was $140. Find the percentage decrease.

ArbitrLikvidat [17]

The item has 42/140 * 100,or 30% of its initial value. That means that it lost 70% of its value, so 70% is the percent decrease.

5 0

4 years ago

An SRS of 25 recent birth records at the local hospital was selected. In the sample, the average birth weight was x = 119.6 ounc

Evgen [1.6K]

Answer:

From the central limit theorem we know that the distribution for the sample mean $\bar X$ is given by:

$\bar X \sim N(\mu, \frac{\sigma}{\sqrt{n}})$

$\mu_{\bar X}= \mu = 119.6$

And now for the deviation we have this:

$SE_{\bar X} = \frac{6.5}{\sqrt{25}}=1.3$

So then the correct answer for this caee would be:

c. 1.30 ounces.

Step-by-step explanation:

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The central limit theorem states that "if we have a population with mean μ and standard deviation σ and take sufficiently large random samples from the population with replacement, then the distribution of the sample means will be approximately normally distributed. This will hold true regardless of whether the source population is normal or skewed, provided the sample size is sufficiently large".

Solution to the problem

From the central limit theorem we know that the distribution for the sample mean $\bar X$ is given by:

$\bar X \sim N(\mu, \frac{\sigma}{\sqrt{n}})$

$\mu_{\bar X}= \mu = 119.6$

And now for the deviation we have this:

$SE_{\bar X} = \frac{6.5}{\sqrt{25}}=1.3$

So then the correct answer for this caee would be:

c. 1.30 ounces.

6 0

3 years ago

Why were tyrants able to hold power in various Greek city-states?

anyanavicka [17]

they had the support of the military and common people who didn't like nobles to rule

6 0

3 years ago