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Fudgin [204]
2 years ago
15

How many cubes with side 2cm are needed to make a cube with side 6cm​

Mathematics
1 answer:
Ilya [14]2 years ago
7 0

Answer:

  • 27 cubes

Step-by-step explanation:

<u>Cube with side 2 has volume:</u>

  • 2³ = 8

<u>Cube with side 6 has volume:</u>

  • 6³ = 2³*3³ = 8*27

<u>Number of cubes:</u>

  • 8*27/8 = 27
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AABC is isosceles.<br> mZC = 25° and mZA = 8x - 7.
Orlov [11]

Answer:

x = 4

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6 0
2 years ago
The point A (5,11) is reflected across the x-axis. How long is the segment AA'?<br>​
Nikitich [7]

Answer:  The required length of the segment AA' is 11 units.

Step-by-step explanation:  Given that the point A(5, 11) is reflected across the X-axis.

We are to find the length of the segment AA'.

We know that

if a point (x, y) is reflected across X-axis, then its co-ordinates becomes (x, -y).

So, after reflection, the co-ordinates of the point A(5, 11) becomes A'(5, -11).

Now, we have the following distance formula :

The DISTANCE between two points P(a, b) and Q(c, d) gives the length of the segment PQ as follows :

PQ=\sqrt{(c-a)^2+(d-b)^2}.

Therefore, the length of the segment AA' is given by

AA'=\sqrt{(5-5)^2+(-11-11)^2}=\sqrt{11^2}=11.

Thus, the required length of the segment AA' is 11 units.

7 0
2 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
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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

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Now, m= 61-\sigma

           = 61-4

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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
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