11/6+3 is 29/6. 2/(29/6) is 12/29, which is the answer.
.81 metre in centrimetre is 81 so 180-81 is 99.
Answer:
144°
Step-by-step explanation:
step 1
Find the measure of the central angle of the regular pentagon
Divide 360 degrees by 5 (the number of sides)
![360\°/5=72\°](https://tex.z-dn.net/?f=360%5C%C2%B0%2F5%3D72%5C%C2%B0)
Let
c----> the center of the pentagon
we know that
m∠ECA=72°
m∠ACB=72°
therefore
m∠ECB=m∠ECA+m∠ACB
substitute the values
m∠ECB=72°+72°=144°
The measure of angle ECB is equal to the degrees that the pentagon rotate
Answer:
(you)
(friend)
So as we can see we got the same z score for both cases so then we can conclude that:
You and your friend are equally ranked.
Step-by-step explanation:
Previous concepts
Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".
The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".
Solution to the problem
Let X the random variable that represent the scores of a population, and for this case we know the distribution for X is given by:
Where
and
And the best way to solve this problem is using the normal standard distribution and the z score given by:
If we have a z score greater we have a bettr result since the value would be on a higher percentile of the distribution. So if we find the two z scores for the scores given we got:
![z =\frac{90-72}{12}=1.5](https://tex.z-dn.net/?f=%20z%20%3D%5Cfrac%7B90-72%7D%7B12%7D%3D1.5)
For the other instructor the distribution changes and would be:
Where
and
And the z score for the friend would be:
![z =\frac{75-60}{10}=1.5](https://tex.z-dn.net/?f=%20z%20%3D%5Cfrac%7B75-60%7D%7B10%7D%3D1.5)
So as we can see we got the same z score for both cases so then we can conclude that:
You and your friend are equally ranked.
Answer:
ikakagalit ba ni pharsa kung para sakin ka<33