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Mazyrski [523]
2 years ago
14

The ratio is 1 2: 2 The value of the ratio is​

Mathematics
2 answers:
Rina8888 [55]2 years ago
3 0

Answer:

6:1

Step-by-step explanation:

If it's 12:2, then divide it by 2 on each side to get 6:1 or 6

Oksanka [162]2 years ago
3 0
6:1

Explaination:
Trust




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Answer:

16 1/3 lbs

Step-by-step explanation:

We can write a ratio to solve

7 lbs             x lbs

-------------- = -------------

3 loaves          7 loaves

Using cross products

7 * 7 = 3x

49 = 3x

Divide each side by 3

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16 1/3 lbs

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Step-by-step explanation:

Vertical line => Slope is Undefined.

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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
What is the area of the figure?
masya89 [10]

Step-by-step explanation:

∆=3*6=18

[]=5*15=75

75+18=93 in squared

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