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andrezito [222]
3 years ago
15

What is the area in hectares of a triangular field whose base is 1310 m and height is 800 m ​

Mathematics
1 answer:
pochemuha3 years ago
7 0
The answer should be A=5.24×105m²
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According to a recent study of 7335 young people in the US, 30% had been arrested for a crime other than a traffic violation by
victus00 [196]

Answer:

a) Statistic.

b) The population proportion is expected to be between 0.29 and 0.31 with a 94% degree of confidence.

Step-by-step explanation:

a) The proportion of 30% is a statistic, as it is a value that summarizes data only from the sample taken in the study from USA Today. Other samples may yield different proportions.

b) We can use the statistic to estimate a confidence interval for the parameter of the population.

The standard error for the proportion is calculated as:

\sigma_p=\sqrt{\dfrac{p(1-p)}{N}}=\sqrt{\dfrac{0.3\cdot 0.7}{7335}}=\sqrt{2.83\cdot10^5}= 0.00535

The margin of error is 0.01. We can use this value to determine the level of confidence that represents.

The formula for the margin of error is:

E=z\cdot \sigma_p=0.01\\\\z\cdot 0.0535=0.01\\\\z=1.87

This z-value, according to the the standard normal distribution, corresponds to a confidence interval of 94%.

The interval for this margin of error is:

p-E\leq \pi \leq p+E\\\\0.30-0.01\leq \pi \leq 0.30+0.01\\\\0.29\leq \pi \leq 0.31

Then, we can conclude that the population proportion is expected to be between 0.29 and 0.31 with a 94% degree of confidence.

3 0
4 years ago
I'm in quite in a bit of a pickle... so, please? and I never forget to mark brainiest
faust18 [17]

The correct answer is a translation.

A rotation would change the direction, a reflection would change the direction, and a dilation would change the size.

I hope this helps :)

7 0
3 years ago
Read 2 more answers
Please helllppppppppp
kondaur [170]

Answer:

x=3cm

Step-by-step explanation:

This is a basic proportion question.

2/18 = x/27

4 0
4 years ago
What is the slope of the line in the graph?
BabaBlast [244]

For every one unit to the right we go up one unit, i.e. rise/run = 1/1 = 1.  That's a textbook slope of 1.

Answer: 1

4 0
4 years ago
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{3/4 x (3/3/4 ÷ 5/16)} -3/1/3
slega [8]
I did this online and got this hope this helps

6 0
3 years ago
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