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3 years ago

What does w=11 plus negative 7

Mathematics

2 answers:

nata0808 [166]3 years ago

8 0

Answer:

w = 4

Step-by-step explanation:

w = 11 + (-7)

w = 11 - 7

w = 4

kow [346]3 years ago

5 0

Answer:

w=4

Step-by-step explanation:

adding a negative is like subtracting so w=11-7

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In the library on a university campus, there is a sign in the elevator that indicates a limit of 16 persons. Furthermore, there

yan [13]

Answer:

Explained below.

Step-by-step explanation:

According to the Central Limit Theorem if an unknown population is selected with mean μ and standard deviation σ and appropriately huge random samples (n > 30) are selected from this population with replacement, then the distribution of the sample means will be approximately normally.

Then, the mean of the sample means is given by,

$\mu_{\bar x}=\mu$

And the standard deviation of the sample means is given by,

$\sigma_{\bar x}=\frac{\sigma}{\sqrt{n}}$

The expected value of the sample mean of their weights is same as the population mean, <em>μ</em> = 1515 lbs.

The standard deviation of the sampling distribution of the sample mean weight is:

$\sigma_{\bar x}=\frac{\sigma}{\sqrt{n}}=\frac{25}{\sqrt{16}}=6.25$

The average weights for a sample of 16 people will result in the total weight exceeding the weight limit of 2500 lbs. is:

$\text{Average Weight}=\frac{2500}{16}=156.25$

Compute the probability that a random sample of 16 persons on the elevator will exceed the weight limit as follows:

$P(\bar X > 156.25)=P(\frac{\bar X-\mu_{\bar x}}{\sigma_{\bar x}}>\frac{156.25-151}{6.25})\\\\=P(Z>0.84)\\\\=1-P(Z$

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3 years ago

Why is 3 plus pi irrational?

Vanyuwa [196]

Answer:

3 + $\pi$ is irrational, as $\pi$ is an irrational number in itself, not being able to change into a fraction as it is a non-terminated number.

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3 years ago

An artist uses 18 colors on an art palette to paint a picture. This is 72% of all the colors on the palette. How many colors are

brilliants [131]

Answer:

He actually has 25 paints.

Step-by-step explanation:

This is because you take 18x100(100 is the total % under 72 because 72 is out of 100) that equals 1800. then, you take 1800 and divide it by 72. That is because 72 is the actual number that we already have. You would get 25 after dividing. hope this helps:)

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3 years ago

Read 2 more answers

Kevin made a jewelry box with dimensions shown 5cm,10cm,15cm what is the value of the jewelry box?

zaharov [31]

Answer:

750

Step-by-step explanation:

10 times 5 times 15

3 0

3 years ago

PLEASE HELP WILL GIVE BRAINLIEST!