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Lynna [10]
3 years ago
11

Solve 4x = 37 Compare the fractions. −6/7 −1/7

Mathematics
2 answers:
lukranit [14]3 years ago
3 0
5/7....................
Olegator [25]3 years ago
3 0
X equals 9.25 because 37/4=9.25
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Answer:

in 13 years it will be at 432,480

Step-by-step explanation:

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2 years ago
Crop researchers plant 15 plots with a new variety of corn. The yields in bushels per acre are: 138.0 139.1 113.0 132.5 140.7 10
son4ous [18]
There is a relationship between confidence interval and standard deviation:
\theta=\overline{x} \pm \frac{z\sigma}{\sqrt{n}}
Where \overline{x} is the mean, \sigma is standard deviation, and n is number of data points.
Every confidence interval has associated z value. This can be found online.
We need to find the standard deviation first: 
\sigma=\sqrt{\frac{\sum(x-\overline{x})^2}{n}
When we do all the calculations we find that:
\overline{x}=123.8\\ \sigma=11.84
Now we can find confidence intervals:
($90\%,z=1.645): \theta=123.8 \pm \frac{1.645\cdot 11.84}{\sqrt{15}}=123.8 \pm5.0\\($95\%,z=1.960): \theta=123.8 \pm \frac{1.960\cdot 11.84}{\sqrt{15}}=123.8 \pm 5.99\\ ($99\%,z=2.576): \theta=123.8 \pm \frac{2.576\cdot 11.84}{\sqrt{15}}=123.8 \pm 7.87\\
We can see that as confidence interval increases so does the error margin. Z values accociated with each confidence intreval also get bigger as confidence interval increases.
Here is the link to the spreadsheet with standard deviation calculation:
https://docs.google.com/spreadsheets/d/1pnsJIrM_lmQKAGRJvduiHzjg9mYvLgpsCqCoGYvR5Us/edit?usp=sharing
6 0
3 years ago
Solve for x. <br> 2/3(x - 7) = -2
son4ous [18]
2/3x -14/3 = -2  -foiled

2/3x = -6/3 +14/3 -common denominator

2/3x = 8/3

x = 8/3 * 3/2 

x = 24/6 

x= 4

4 0
3 years ago
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What number should be placed in the box to help complete the division calculation?
Anarel [89]
344 should be placed in the box
3 0
3 years ago
How manet times dose 50 go into 1,000
strojnjashka [21]

Answer:

20 times

Step-by-step explanation:

1,000 divided by 50 will be 20 try using lone division :)

6 0
3 years ago
Read 2 more answers
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