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mash [69]
2 years ago
12

3 ^ 2 x * 3 - 4 * 3 ^ x + 1 equals 0

es%20%20%7B3%7D%5E%7Bx%7D%20%20%2B%201%20%3D%200" id="TexFormula1" title=" {3}^{2x + 1} - 4 \times {3}^{x} + 1 = 0" alt=" {3}^{2x + 1} - 4 \times {3}^{x} + 1 = 0" align="absmiddle" class="latex-formula">
​
Mathematics
1 answer:
Sophie [7]2 years ago
6 0


Explanation just use gauth.math
Hope this helps

Answer:

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What is the solution set of the given system?
AVprozaik [17]

What is the system? (Is there supposed to be an image?)

3 0
3 years ago
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
Can someone help please ?
Reika [66]

Answer:

Step-by-step explanation:

12.8/2 = 96 / 2 = 48

the answer is the first one

<h2>have a nice day!</h2>
6 0
2 years ago
a parallelogram has a base of 9 units and an area of 12 square units. what is the corresponding height for the base
Triss [41]

Answer:

1 1/3

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
R-12 evaluate if r= negative 3
GalinKa [24]
If r=-3, then it would be -3-12 which equals -15
5 0
3 years ago
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