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Leto [7]
3 years ago
11

What is the answer to 3n+16=7n

Mathematics
2 answers:
Elanso [62]3 years ago
7 0
Subtract 3n from 7n then you get 4n then divide 4n from 16 then n=4
Dahasolnce [82]3 years ago
5 0
N = 4.
I’m not sure if that was what you were asking though.
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HURRY QUICKLY PLEASE William measures the length of three sides of a building. Place the lengths in order from greatest to least
insens350 [35]

Answer:

104m, 0.096km, 2100cm

Step-by-step explanation:

0.096 kilometres = 9600

2100 cm

104m = 10400 cm

10400, 9600, 2100

104m, 0.096km, 2100cm

Answered by Gauthmath

4 0
2 years ago
A university dean is interested in determining the proportion of students who receive some sort of financial aid. Rather than ex
Olenka [21]

Answer:

a

 The  90% confidence interval that  estimate the true proportion of students who receive financial aid is

     0.533  <  p <  0.64

b

   n = 1789

Step-by-step explanation:

Considering question a

From the question we are told that

      The sample size is  n = 200

      The number of student that receives financial aid is k = 118

Generally the sample proportion is  

      \^ p = \frac{k}{n}

=>   \^ p = \frac{118}{200}

=>   \^ p = 0.59

From the question we are told the confidence level is  90% , hence the level of significance is    

      \alpha = (100 - 90 ) \%

=>   \alpha = 0.10

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

   Z_{\frac{\alpha }{2} } =  1.645

Generally the margin of error is mathematically represented as  

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

 =>E =  1.645 * \sqrt{\frac{0.59 (1- 0.59)}{200} }

=>  E = 0.057

Generally 90% confidence interval is mathematically represented as  

      \^ p -E <  p <  \^ p +E

  =>  0.533  <  p <  0.64  

Considering question b

From the question we are told that

    The margin of error  is  E = 0.03

From the question we are told the confidence level is  99% , hence the level of significance is    

      \alpha = (100 - 99 ) \%

=>   \alpha = 0.01

Generally from the normal distribution table the critical value  of   is  

   Z_{\frac{\alpha }{2} } = 2.58

Generally the sample size is mathematically represented as      

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

=>      n = [\frac{2.58}{0.03} ]^2 * 0.59 (1 - 0.59 )

=>      n = 1789

8 0
2 years ago
Factor completely 3x – 15.<br> 3(x - 5)<br> 3(x + 5)<br> 3x(-15)<br> Prime
Elden [556K]

Answer:

A. 3(x-5)

Step-by-step explanation:

USE M-A-T-H-W-A-Y

5 0
1 year ago
Read 2 more answers
Uhm I need help.. If I threw a ball vertically at an initial speed of 34.5 m/s, how many seconds would it take to reach its maxi
e-lub [12.9K]

Answer:

3.8 seconds to reach the maximum height

Hope I helped have a nice day!:)

Step-by-step explanation:

5 0
2 years ago
Can anyone help me ASAP!
brilliants [131]

What's your question?

Please tell your question...

5 0
2 years ago
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