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vampirchik [111]
2 years ago
12

2(-n - 3) - 7(5+ 2n)

Mathematics
1 answer:
velikii [3]2 years ago
5 0

Answer:

-16n-41

Step-by-step explanation:

2(-n-3)-7(5+2n)

Distribute

-2n-6-35-14n

Combine like terms

-16n-41

Hope this helps!

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You are interested in estimating the the mean age of the citizens living in your community. In order to do this, you plan on con
Naddika [18.5K]

Answer:

The sample size is    n = 68

Step-by-step explanation:

From the question we are told that

    The margin of error is  E = 5 \ years

     The standard deviation is  \sigma = 22

From the question we are told the confidence level is  94% , hence the level of significance is    

      \alpha = (100 - 94 ) \%

=>   \alpha = 0.06

Generally from the normal distribution table the critical value  of  \frac{\alpha }{2} is  

   Z_{\frac{\alpha }{2} } =  1.881

Generally the sample size is mathematically represented as  

   n = [\frac{Z_{\frac{\alpha }{2} } *  \sigma }{E} ] ^2

=>  n = [\frac{1.881 } *  22 }{5} ] ^2

=>  n = 68

8 0
3 years ago
What is 5(h-4)=8?????????????????????
IRINA_888 [86]
5(h-4)=8\\
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7 0
3 years ago
At the start of his race, 86-kg Olympic 100m champion Usain Bolt pushes against the starting block, exerting an average force of
Leviafan [203]
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2) Determine the Impulse of that force on Usain.

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3) Determine change in momentum of Usain, Δp

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Given the Usain started from rest, the velocity is ΔV - 0 = 5.94 m/s

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Answer:

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