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Svetradugi [14.3K]
3 years ago
8

If the mean of 10 numbers is 45, what is their sum?

Mathematics
1 answer:
Yakvenalex [24]3 years ago
6 0
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The circumference of a circle is 604 cm. What is the diameter of the circle?
Marta_Voda [28]

Step-by-step explanation:

The Circumference is:

c = 2\pi \: r

Radius r is:

r =  \frac{d}{2}

So,

c = \pi \: d \\ d =  \frac{c}{\pi}  \\ d =  \frac{604}{\pi} \:  cm

6 0
3 years ago
On a test that has a normal distribution, a score of 49 falls two standard deviations below the mean, and a score of 61 falls on
Zolol [24]

The mean of this test will be 57.

<h3>What is Standard Deviation and Mean?</h3>

A standard deviation (or σ) is a measure of how dispersed the data is in relation to the mean.

The mean can be used to get an overall idea, or picture, of the data set.

Let Mean be 'm'

and standard deviation= \sigma

So, m-2\sigma=49

and, m + \sigma=61

Solving the above two equation we get

\sigma =4

Now, m= 61-\sigma

           = 61-4

           = 57

So , the mean of this test will be =57

Learn more about mean and standard deviation here:

brainly.com/question/16030790

#SPJ1

6 0
2 years ago
Use the parabola tool to graph the quadratic function.<br><br> f(x)=2x^2+12x+16
viva [34]
The first thing you should know is that you need three points to be able to graph a second degree equation.
 You can create a table and plot several points to obtain the parabola
 In this case we will use a computational tool called wolfram alpha
 Answer: 
 See attached image.
 The graph is shown for two different intervals of the domain.

7 0
3 years ago
HELP!!!! Divide. Write your answer in lowest terms as a proper or improper fraction (not a mixed number). 11/21 divided by 22/7
vodomira [7]
My answer is 1/6. Here's How I worked it out:

11/21 / 22/7 is the same as or = to 11/21 * 7/22 which = 77/462 and then divide both the numerator and denominator by 77 and you get 1/6. (In other words simplify 77/462). Hope this helped :) 
8 0
3 years ago
72 marble and 75% are red
creativ13 [48]
Uh what do you mean by this?
6 0
2 years ago
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