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Ber [7]
3 years ago
7

What is the 4th cube number.

Mathematics
2 answers:
Basile [38]3 years ago
4 0

Step-by-step explanation:

4×4×4=64

so the forth cube number is 64

Tcecarenko [31]3 years ago
3 0
The 4th cube number is 64
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Which answer is the approximate standard deviation of the data set?
Ierofanga [76]

Answer:  A. 6.5

Step-by-step explanation:

Here, the given set = { 15, 19 3, 12, 17, 2, 2, 8}

Mean, \overline{ x} = \frac{15+19+3+12+17+2+2+8}{8} = \frac{78}{8} = 9.75

Number of elements, n = 8

\frac{\sum (|x-\overline{x}|)^2}{n}=42.4375

Thus, the standard deviation, \sigma =\frac{\sqrt{\sum(|x-\overline{x}|)^2} }{n}=\sqrt{\frac{339.5}{8}}=\sqrt{42.4375} = 6.51440711\approx 6.5

⇒ Option A is correct.

4 0
3 years ago
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Step-by-step explanation:

7 0
2 years ago
3x+y+z=4<br> 2x+2y+3z=3<br> X+3y+2z=5
zhenek [66]
1) 3x+y+z=4
2) 2x+2y+3z=3
3) x+3y+2z = 5

1)*2 6x + 2y + 2z = 8
2)    2x + 2y +3z  = 3
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       4x - z            = 5

2)*3  6x + 6y + 9z = 9
3)*2  2x + 6y + 4z = 10
-      __________________
       <span>4x+5z             =-1
</span>
4x+5z = -1
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6z = -6
<u>z = -1
</u><u /><u>
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4x -(-1) =5
4x = 5-1
x = 4/4
<u>x=1</u>

3x+y+z=4
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So z=-1, x=1, y=2</u>
6 0
3 years ago
A piece of paint cost $400. There is a 25% mark-<br> up. What is the selling price of the painting?
Sliva [168]

Answer:

$500.

Step-by-step explanation:

6 0
3 years ago
What is anothe fraction for1/4
QveST [7]

Answer:

Equivalent fraction of 1/4 is 2/8 simple method multiplying & diving 1/4 by 2.

Step-by-step explanation:

5 0
3 years ago
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