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3 years ago

Find the angle measure of one internal angle for regular hexagon ABCDEF.

Mathematics

1 answer:

babunello [35]3 years ago

5 0

Answer:

Each interior angle of a polygon equals:

180 degrees - (360 / number of sides)

180 - (360 / 6)

= 180 -60

= 120 degrees

http://www.1728.org/polygon.htm

Step-by-step explanation:

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myra swims 3/5 of a mile farther than luke.if luke swims 2 and 4/10 miles, how many milrs does myra swim?

Irina-Kira [14]

The answer is 447 because you got to add 35 plus 410

3 0

3 years ago

Tn = -2n + 3, find t4

yanalaym [24]

Substitute n = 4

t(4)=-2(4)+3

-8+3= -5

therefore t(4) = -5

4 0

3 years ago

In a sample of nequals16 lichen specimens, the researchers found the mean and standard deviation of the amount of the radioacti

GuDViN [60]

Answer:

(a) The confidence level desired by the researchers is 95%.

(b) The sampling error is 0.002 microcurie per millilitre.

Step-by-step explanation:

The mean and standard deviation of the amount of the radioactive element, cesium-137 present in a sample of n = 16 lichen specimen are:

$\bar x=0.009\\s=0.005$

Now it is provided that the researchers want to increase the sample size in order to estimate the mean μ to within 0.002 microcurie per millilitre of its true value, using a 95% confidence interval.

The (1 - α)% confidence interval for population mean (μ) is:

$CI=\bar x\pm z_{\alpha/2}\times \frac{s}{\sqrt{n}}$

(a)

The confidence level is the probability that a particular value of the parameter under study falls within a specific interval of values.

In this case the researches wants to estimate the mean using the 95% confidence interval.

Thus, the confidence level desired by the researchers is 95%.

(b)

In case of statistical analysis, during the computation of a certain statistic, to estimate the value of the parameter under study, certain error occurs which are known as the sampling error.

In case of the estimate of parameter using a confidence interval the sampling error is known as the margin of error.

In this case the margin of error is 0.002 microcurie per millilitre.

(c)

The margin of error is computed using the formula:

$MOE=z_{\alpha/2}\times \frac{s}{\sqrt{n}}$

The critical value of z for 95% confidence level is:

$z_{\alpha/2}=z_{0.05/2}=z_{0.025}=1.96$

*Use a z-table.

$MOE=z_{\alpha/2}\times \frac{s}{\sqrt{n}}$

$0.002=1.96\times \frac{0.005}{\sqrt{n}}$

$n=[\frac{1.96\times 0.005}{0.002}]^{2}$

$=(4.9)^{2}\\=24.01\\\approx 25$

Thus, the sample size necessary to obtain the desired estimate is 25.

6 0

4 years ago

Which line is best model for the data in the scatter plot

Levart [38]

Answer:

Bottom left corner

Step-by-step explanation:

This is because that the graph at the bottom has the dots scattered equally with one near the lone of best fit which means that it'll show better accuracy.

Hope this helps :)

Have a nice day!!!

6 0

4 years ago

The manager at a supermarket arranged 10 rows of cans. He put 2 cans in the first row, 4 cans in the second row, and 6 cans in t

Elena-2011 [213]

A)

2, 4, 6, 8, *10

The fifth row contains 10 cans.

----------------------------------------------------

b)

2+4+6+8+10+12+14+16+18+20=110

-----------------------------------------------------

c)

2*Row=Number Of Cans

When Row=1, Number Of Cans=2.

When Row=5, Number Of Cans=10.

When Row=10, Number Of Cans=20.

6 0

3 years ago