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3 years ago

Write a decimal that represents the value of $1 bill and 5 quarters

Mathematics

2 answers:

horrorfan [7]3 years ago

8 0

The correct answer for this would be 1.00 1.25. Hope this is helpful.

Nana76 [90]3 years ago

8 0

So, you know $1=1.00. And 5 quarters= $1.25. (0.25x5). So, if you want to add them together, you get $2.25.

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I have 7hundreds blocks,5tens blocks,and 8ones blocks.I use my block to model two 3-digit numbers.What could My two numbers be?

Natali [406]

The number is 758 because there is 7 hundred blocks and 5 ten blocks and 8 one blocks which is 758

8 0

3 years ago

A random sample of 81 automobiles traveling on a section of an interstate showed an average speed of 60 mph. The distribution of

myrzilka [38]

Answer:

Let X the random variable that represent the variable of interest of a population, and for this case we know the distribution for X is given by:

$X \sim N(60,13.5)$

Where $\mu=60$ and $\sigma=13.5$

And for this case we select a sample size of n= 81. Since the distribution for X is normal then we know that the distribution for the sample mean $\bar X$ is given by:

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

And the standard error of the mean would be:

$\sigma_{\bar X} =\frac{13.5}{\sqrt{81}}= 1.5$

4.1.5

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 Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".

Solution to the problem

Let X the random variable that represent the variable of interest of a population, and for this case we know the distribution for X is given by:

$X \sim N(60,13.5)$

Where $\mu=60$ and $\sigma=13.5$

And for this case we select a sample size of n= 81. Since the distribution for X is normal then we know that the distribution for the sample mean $\bar X$ is given by:

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

And the standard error of the mean would be:

$\sigma_{\bar X} =\frac{13.5}{\sqrt{81}}= 1.5$

4.1.5

7 0

3 years ago

Can someone please help me out with this as ive tried to put everything to solve it but im still wrong.

tangare [24]

In an equilateral triangle all the sides are equal. This means that all the angles add up to 180 degrees.
Divide 180 by 3 and you get 60.
You want an exterior angle so you cut the angle in half ( it is now 30 )
Because the base and the line are parallel (form right angle if drew line connecting them) x is equal to
90-30=60

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3 years ago

Evaluate each function.<br> 15) f(n)= n° + 3n?; Find f(-4a²)

coldgirl [10]

Answer:

Step-by-step explanation:

6 0

3 years ago

1. The sum of two number is x. If one of the numbers is 16, what is the other number?

Vlada [557]

I hope this helps you

first number 16

second number ?

Sum of these numbers =x

x=16+?

?=x-16

3 0

3 years ago