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saveliy_v [14]
2 years ago
9

How do u do this?!?!

Mathematics
1 answer:
soldi70 [24.7K]2 years ago
8 0

Answer:

-9

Step-by-step explanation:

5-p

p=-9

-4 is greater than 5-p

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The perimeter of a rectangular parking lot is 292 m.
Reika [66]

Answer:

the answer would be 211

Step-by-step explanation:

you simply add the length and width together to find perimeter. since you have the total perimeter and the length you would instead subtract the two.

292-81= 211

4 0
3 years ago
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Insurance companies are interested in knowing the population percent of drivers who always buckle up before riding in a car. Whe
podryga [215]

Answer:

The value  is  n = 384

The correct option is a

Step-by-step explanation:

From the question we are told that

   The margin of error is  E =  0.05

From the question we are told the confidence level is  95% , hence the level of significance is    

      \alpha = (100 - 95 ) \%

=>   \alpha = 0.05

Generally from the normal distribution table the critical value  of   is  

   Z_{\frac{\alpha }{2} } =  1.96

Generally since the sample proportion is not given we will assume it to be

      \^ p = 0.5

Generally the sample size is mathematically represented as  

    n = [\frac{Z_{\frac{\alpha }{2} }}{E} ]^2 * \^ p (1 - \^ p )

=>   n = [\frac{ 1.96 }{0.05} ]^2 *0.5 (1 - 0.5)

=>   n = 384

Generally the margin of error is mathematically represented as  

      E = Z_{\frac{\alpha }{2} } *  \frac{\sigma }{\sqrt{n} }

Generally if the level of confidence increases,  the critical value of  \frac{\alpha }{2}  increase and from the equation for margin of error we see the the critical  value varies directly with the margin of error , hence the margin of error  will increase also  

So  If the confidence level is increased, then the sample size would need to increase because a higher level of confidence increases the margin of error.

8 0
3 years ago
If m = 35 cm and n = 37 cm, what is the length of l?
ElenaW [278]
Minus m-n = 36 so 36 is your answer.
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3 years ago
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Answer:

Step-by-step explanation:

9a - 8 = 2a - 2b

7a - 8 = -2b

7a = 8 - 2b

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3 0
3 years ago
Px + qy = r<br> 2px - qy = 2r<br> When solving this system of equations, x =
VladimirAG [237]
Px + qy = r
2px - qy = 2r
----------------add
3px = 3r

x = 3r/3p
x = r/p
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