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mote1985 [20]
3 years ago
9

3 divide by 9.2 in a decimal

Mathematics
1 answer:
lys-0071 [83]3 years ago
5 0
The answer is 0.3260869565. you can round that
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What is the scale factor of the dilation?
inna [77]

Answer:

3

Step-by-step explanation:

the distance from the point of dilation to point C is 3

the distance from the point of dilation to point A is 9

9/3 = 3

hope this helps, pls mark brainliest :D

5 0
3 years ago
A sample size must be determined for estimating a population mean given that the confidence level is ​% and the desired margin o
Sauron [17]

Complete Question

The complete question is shown on the first uploaded image

Answer:

a

 n =290

b

 n =129

c

 The correct option is  D

Step-by-step explanation:

From the question we are told that

    The margin of error is   E  =  0.23

     The largest value is  k =  15

     The smallest value is  u = 7

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  \frac{\alpha }{2} is  

   Z_{\frac{\alpha }{2} } =  1.96

Generally population  standard deviation estimate is mathematically represented as

      \sigma  =  \frac{Range }{4}

Here the Range is mathematically represented as

       Range  =  k - u

=>    Range  = 15 - 7

=>    Range  = 8

=>   \sigma  =  \frac{8 }{4}

=>   \sigma  =  2

Generally the sample size is mathematically represented as

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

=>   n = [1.96  *  2 }{0.23} ] ^2

=>   n =290

Generally to obtain a  conservatively small sample size the population standard deviation estimate becomes

=>   \sigma  =  \frac{Range }{6}

=>   \sigma  =  \frac{8 }{6}

=>   \sigma  =1.333

Generally the conservatively small sample size is mathematically evaluated as

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

=>   n = [1.96  *  1.333 }{0.23} ] ^2

=>   n =129  

 

6 0
2 years ago
Someone please help me I’ll mark brainliest
tekilochka [14]
There are no solutions.
6 0
3 years ago
Read 2 more answers
What is .368 written in expanded form?
olganol [36]

The expanded form could be:

.300+.060+.008

7 0
3 years ago
Read 2 more answers
How do you solve 7n-2=6n-2n
pantera1 [17]
First combine like terms:
6n-2n = 4n
7n-2=4n
subtract 7n from both sides
7n-2=4n
-7n    -7n
-2=-3n
divide -2 on both sides.
n=1.5
7 0
3 years ago
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