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inysia [295]
3 years ago
15

How to decompose fraction

Mathematics
1 answer:
Natasha2012 [34]3 years ago
3 0
Simply mean to take it apart. The most basic way to decompose a fraction is to break into unit fractions
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A 57-inch television screen has an aspect ratio of 4:3. Find the scale factor (x), find the length and width, and calculate the
natulia [17]

tv-sets are rated by the screen size and the screen size comes from the length of its diagonal.

so a 57" TV has a 57" diagonal.

Check the picture below.

\bf \stackrel{length}{4\left( \cfrac{57}{5} \right)}\implies \cfrac{228}{5}\implies 45\frac{3}{5}~\hfill \stackrel{width}{3\left( \cfrac{57}{5} \right)}\implies \cfrac{171}{5}\implies 34\frac{1}{5} \\\\[-0.35em] \rule{34em}{0.25pt}\\\\ \stackrel{Area}{\cfrac{228}{5}\cdot \cfrac{171}{5}}\implies \cfrac{38988}{25}\implies 1559\frac{13}{25}

3 0
3 years ago
a previous analysis of paper boxes showed that the standard deviation of the length is 9mm. What is the 98% confidence interval
il63 [147K]
We cannot calculate the confidence interval without the sample size.  However, for the second question, the sample size needed would be 49.

The formula we use is

n=(\frac{z_{\frac{\alpha}{2}}\times \sigma}{E})^2

To find the z-score:
Convert 98% to a decimal:  0.98
Subtract from 1:  1-0.98 = 0.02
Divide by 2:  0.02/2 = 0.01
Subtract from 1:  1-0.01 = 0.99

Using a z-table (http://www.z-table.com) we see that this value is closest to a z-score of 2.33.

Using the z-score, our standard deviation (9) and our margin of error (3), we have:
n=(\frac{2.33(9)}{3})^2=(6.99)^2=48.86\approx 49
6 0
3 years ago
Please help me solve this.
Vlada [557]

Answer:

<h2>I think that is a FORMULA.</h2>

it can't be solved if we don't know the values of atleast one of the x and y.

Hope this helps.

Good luck ✅.

8 0
2 years ago
Which recursive formula can be used to generate the sequence shown where f(1)=9.6 and n is greater than or equal to 1?
S_A_V [24]
The formula is f(x) = 10x + 5
3 0
3 years ago
How to find the perimeter of a parallelogram
jonny [76]
Perimeter is the sum of all the sides of the shape

do you know the length of each side of the parallelogram?

4 0
3 years ago
Read 2 more answers
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