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3 years ago

HeLP ASAP WiLl GiVe bRanIiEst!!!!!

Mathematics

2 answers:

riadik2000 [5.3K]3 years ago

6 0

Step-by-step explanation:

mean = 5+7+7+x /4 = 7

19+x / 4 = 7

19+x = 28

x = 9

olchik [2.2K]3 years ago

4 0

Answer:

For question 1 the answer is 6.

For question 2 the answer is 9

Question 1

In order to find the average of a set of numbers you have to add all the numbers given and then divide the value that you get by the amount of numbers added. In the question you were given 7 numbers therefore, you add all of then and then divide the value you get by 7.

Question 2

To calculate the mean we do as we did above and add all the numbers given then divide the value obtained by the amount of numbers added. However in this question we are missing a number so we substitute the value and call it *x*. So, (5+7+7+x)/ 4 = 7. we cross multiply to get 4x7 which is 28. The new equation would then be: (5+7+7+x) =28, you then group the like terms to get: 5+7+7-28 = x. Therefore x is equal to 9. Meaning that the forth number is *9*

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Trig help please, 2 questions, 10 pts

Scrat [10]

1. 2700 degrees. 450 rotations in on minute is 450(360) degrees per minute. If you divide this by 60 you get 2700.
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3 years ago

Can someone please help me?

elixir [45]

Answer: it is c

Step-by-step explanation:

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3 years ago

Segment AB is being dilated with the center at the origin. The image of A, point A" has coordinates of (3.2, 6.4). What is the s

insens350 [35]

Answer: The correct option is

(A) The scale factor is 0.8 and the coordinates of point B" are (–3.2, –4.8).

Step-by-step explanation: Given that the segment AB is being dilated to A''B'' with the center at the origin. The image of A, point A" has coordinates of (3.2, 6.4).

We are to find the scale factor of the dilation and the co-ordinates of the point B''.

From the given graph, we note that

the co-ordinates of point A are (4, 8).

Now, If S is the scale factor of dilation, then we must have

$S\times (4,8)=(3.2,6.4)\\\\\Rightarrow (4S,8S)=(3.2,6.4)\\\\\Rightarrow S=\dfrac{3.2}{4}=\dfrac{6.4}{8}=0.8.$

So, the scale factor is 0.8.

Now, the co-ordinates of point B are (-4, -6). So, the co-ordinates of B'' will be

$(-4\times 0.8,-6\times 0.8)=(-3.2,-4.8).$

Thus, the correct option is

(A) The scale factor is 0.8 and the coordinates of point B" are (–3.2, –4.8).

4 0

4 years ago

Read 2 more answers

12/11-(-2/3)=?????????????????????????????????????????

sveta [45]

Answer:

58/33

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

The following data shows the number of stage shows 20 students of a class watched in a month:

Ket [755]

The histogram that represents this data would be the histogram shown in the image below.

<h3>What is a Histogram?</h3>

In a histogram, bars or bins show the frequency of a range of data points in a data distribution.

Given the data set, 1, 7, 4, 4, 3, 2, 7, 8, 1, 19, 20, 22, 20, 19, 16, 16, 19, 13, 1, 13, the groups and frequency for the data distribution would be:

0 - 5: 7

6 - 11: 3

12 - 17: 4

18 - 23: 6

Therefore, the histogram that represents this data would be the histogram shown in the image below.

Learn more about histogram on:

brainly.com/question/18198700

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2 years ago