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Inessa [10]
3 years ago
6

What is the standard deviation of the data set 2,4,7,8,9

Mathematics
1 answer:
Temka [501]3 years ago
3 0
9999999 lol ok frfr add them all up then get ur answer
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I have already tryed but how in the world do i solve 2
trapecia [35]
Alright, let's factor this to get the answer.
3k^2-10k+7
To find the factors, we want to think "What will add up to -10, and multiply to (+)7?"
Because the leading coefficient is 3, we know that we can take one factor of 7 and multiply it by 3.
Thus, this factors to
(3k-7)(k-1)
(if you FOIL it it should come out to be the original equation)

From this, set both of those [(3k-7) and (k-1)] equal to zero and solve
3k-7=0
3k=7
/3
k=7/3
or
k=1
6 0
3 years ago
Whats the área of a square whose perimeter is 48
Roman55 [17]

Answer:

144

<h3>Step-by-step explanation:</h3>

If 48 is the perimeter, then 48 divided by 4 is one of the side lengths.

L x W = Area

12 x 12 = Area

12 x 12 = 144

Area = 144

7 0
3 years ago
Add the following complex numbers:<br> (6 - 21) + (11 +61)
umka2103 [35]

Answer:

ugh I think its red

Step-by-step explanation:

I'm kidding its 57

5 0
2 years ago
Read 2 more answers
I don’t understand this question.
Anastaziya [24]
<span>In a triangle the sum of two sides is always greater than the third side.

5.6-4.0 < x < 5.6+4.0
1.6 < x < 9.6  </span>← answer
4 0
3 years ago
Directions: Identify the solids that can be formed by the given figures. Write
jeka57 [31]

Answer:

ALL CAN BE MADE IN SOLID FIGURES

4 0
3 years ago
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