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mamaluj [8]
3 years ago
15

3+6•(5+4) ÷3-7 guys please help

Mathematics
2 answers:
Blababa [14]3 years ago
6 0

Answer: 11

Step-by-step explanation:

3+5.(5+4)÷3-7

3+5×8÷3-7

3+15-7

11

Bye

MrRa [10]3 years ago
3 0
First you have to do the one in the bracket so that would be 9. Now its 3+6x9 divide by 3-7 then do the multiplication and you will get 54. Now its 3+54 divided by 3-7. Now do the division and you’ll get 18. Now its 3+18-7 then add 3+18 which is 21 then subtract 7 which is 14
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lawyer [7]

Answer:

The standard deviation of the sample mean differences is _5.23_

Step-by-step explanation:

We have a sample of a population A and a sample of a population B.

For the sample of population A, the standard deviation \sigma_A is

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For the sample of population B, the standard deviation \sigma_B is

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