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UNO [17]
2 years ago
10

Please help me!!!!!!!!!!

Mathematics
1 answer:
bezimeni [28]2 years ago
4 0
9.2 x 13.8 = 126.96, now usually to get the area of a triangle we would half this but because we have two of the same triangle we would then have to double it again so they cancel each other out. We then do 6.9 x 9.2 which equals 63.48 and again we have two of the same triangle so no need to half it. So we add the two totals of 126.96 and 63.48 together to get 190.44.
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An engineer wishes to determine the width of a particular electronic component. If she knows that the standard deviation of all
lakkis [162]

Answer:

n=(\frac{0.539(2.2)}{0.3})^2 =15.62 \approx 16

So the answer for this case would be n=16 rounded up to the nearest integer

Step-by-step explanation:

For this case we have the following info given:

\sigma = 2.2 represent the population deviation

Confidence =0.8

ME = 0.3 represent the margin of error desired

The margin of error for the true mean is given by this formula:

ME=z_{\alpha/2}\frac{\sigma}{\sqrt{n}}    (a)

And on this case we have that ME =0.03 and we are interested in order to find the value of n, if we solve n from equation (a) we got:

n=(\frac{z_{\alpha/2} \sigma}{ME})^2   (b)

The confidence level is 80%, the significance would be \alpha=0.2 and \alpha/2 =0.1 the critical value for this case is z_{\alpha/2}=0.539, replacing into formula (b) we got:

n=(\frac{0.539(2.2)}{0.3})^2 =15.62 \approx 16

So the answer for this case would be n=16 rounded up to the nearest integer

5 0
2 years ago
How many pumpkins have a mass greater than 6kg
jekas [21]

Answer: 16 pumpkins.

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
The graph represents the balance of Harrison’s car loan in the months since purchasing the car. A coordinate plane showing Car L
Marina CMI [18]

Answer:

B

Step-by-step explanation:

its the answer

5 0
2 years ago
Toner cartridges for the laser printer in your office cost $90 each, including tax. You receive an $8 refund for each empty cart
dimulka [17.4K]
Step One
Figure out the cost for 1 cartridge
Cost =       90
<u>Refund =     8 Subtract</u>
Net cost = 82

Step Two
Find the cost for 14
14 * 82 = 1148    <<<<<< Cost for 14
5 0
2 years ago
Jenna concludes that (4,9) is the solution to the system of these two equations. which of the following justifies her conclusion
nalin [4]

<u><em>Answer:</em></u>

a. The point (4,9) appears in both tables

<u><em>Explanation:</em></u>

<u>Note:</u> This question can be solved without the need of the tables

<u>A solution of a system of equations</u> is defined as a point (or set of points) that satisfy both equations

<u>This means that,</u> this point should belong to all the equations in the system

Now, a table is used to show a set of points that belong to a certain line

This means that, all vales in the table belong to the line they represent

<u>Since the point (4,9) appears in both tables</u>, therefore, it belongs to both lines and, therefore, is a solution to the system of equations consisting of these two lines

Hope this helps :)

5 0
2 years ago
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