Answer:
ok ill private message it to you wink
Step-by-step explanation:
See the picture attached to better understand the problem
in the figure C is the <span>fire hydrant
</span>
we know that
in the right triangle ABC
AB=opposite side angle x
BC=adjacent side angle x
tan x°=AB/BC-----> 125/72
x=arc tan (125/72)-----> x=60.06°
the answer is
the angle of elevation from the fire hydrant to the top of the building is 60.06°
Answer:
By the Central Limit Theorem, the mean is 78, the standard deviation is
and the shape is approximately normal.
Step-by-step explanation:
Central Limit Theorem
The Central Limit Theorem establishes that, for a normally distributed random variable X, with mean
and standard deviation
, the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean
and standard deviation
.
For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.
Mean of 78 and a standard deviation of 6
This means that ![\mu = 78, \sigma = 6](https://tex.z-dn.net/?f=%5Cmu%20%3D%2078%2C%20%5Csigma%20%3D%206)
Samples of n:
This means that the standard deviation is:
![s = \frac{\sigma}{\sqrt{n}} = \frac{6}{\sqrt{n}}](https://tex.z-dn.net/?f=s%20%3D%20%5Cfrac%7B%5Csigma%7D%7B%5Csqrt%7Bn%7D%7D%20%3D%20%5Cfrac%7B6%7D%7B%5Csqrt%7Bn%7D%7D)
What are the mean, standard deviation, and shape of the distribution of x-bar for n?
By the Central Limit Theorem, the mean is 78, the standard deviation is
and the shape is approximately normal.
- 11s² - 21st
- 4st - t²
- 2x² + x³
- 2x + 2
- 9x - 3s - 2t
I answered only 5 because the question gives only 5 points
Answer:
The way I was taught to do it is to change value into a total fraction, then multiple the numerators together, multiply the denominators together, and finally reduce as far as possible.
7/9 x 5 2/5 = 7/9 x 27/5 = 189/45 = 4 9/45 = 4 1/5
1 3/4 x 4 1/6 = 7/4 x 25/6 = 175/24 = 7 7/24