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Anettt [7]
3 years ago
11

How to find mean and standard deviation given mean and standard deviation of each variable?

Mathematics
1 answer:
Inessa [10]3 years ago
7 0
Same i a m on this questions
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Factor completely. x^2-3x-28
Mars2501 [29]

Answer:

= (x+4) (x-7)

Step-by-step explanation:

x²-3x -28

Product = -28

Sum = -3

numbers = -7 and 4

Thus;

x²- 3x -28 ; replacing -3x with -7x and 4x

x²-7x +4x -28

x(x-7) + 4(x-7)

<u>= (x+4) (x-7) </u>

4 0
4 years ago
Read 2 more answers
How do you find 2a+b?
ser-zykov [4K]
A = 2/-3  which is -0.6666... 
and b= 1/4. 
so what you want to do is -0.66666666666 * 2 = -1.33333333333
 then you want to do -1.33333333333 + .24 =  (-1.093333333) is your answer
5 0
3 years ago
Plz solve this. with expalnations 20 points​
yanalaym [24]

Step-by-step explanation:

length of half circumference EFG=15

BC=8

the perimeter=57

the are=35square

4 0
3 years ago
What is the domain of the function y = 3 x -4 when the range is {–7, 2, 8, 14}?
scZoUnD [109]

Answer:

37

Step-by-step explanation:

3 0
3 years ago
Prove that (1-sinA-cosA)^2=2(1-sinA)(1-cosA)
V125BC [204]

So this is the answer...

Hope this can help :)

6 0
3 years ago
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