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Galina-37 [17]
3 years ago
9

What is the lateral area of the cone with the raduis of 10 and height 12.1

Mathematics
1 answer:
beks73 [17]3 years ago
3 0

Answer:

493.15

Step-by-step explanation:

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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
Please help me I’m desperate and in need of hep‼️‼️‼️ Describe how to calculate the volume of a composite 3-D figure.
Ugo [173]

Answer:

To find the volume of a composite 3D figure, draw any necessary planes to view the figure as basic three dimensional figures, then:

add basic figure volumes belonging to the composite shape.

subtract basic figure volumes NOT belonging to the composite figure.

Step-by-step explanation:

5 0
2 years ago
4 ( x- 2) = 34 for x
DerKrebs [107]
X=21/2
X=10 1/2
X=10.5
7 0
3 years ago
Read 2 more answers
What is 86 over 5 as a mixed number in simplest form
inysia [295]
86/5 

= 85/5 + 1/5

= (17x5)/5 + 1/5

= 17 + 1/5
3 0
3 years ago
Read 2 more answers
Please please help me
Nataly_w [17]

Answer:

The average rate of change is 4.

Step-by-step explanation:

It is 4 because when you do the formula to find the rate of change it comes out to be 4.

8 0
3 years ago
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