David designs floor tiles. His latest design is shaped as a regular pentagon. Write a formula for the perimeter of the tile in t
1 answer:
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Answer:
A. 16.86 square inches
Step-by-step explanation:
Area of Circle = , where r = radius.
Area of Rectangle = , where l = length and w = width.
We are given the radius of the circle as 1, and we use π as 3.14
Next, we find the area of the rectangle.
Lastly, we subtract 3.14 from 20.
Therefore, the answer is A. 16.86 square inches.
Answer:
And we can find this probability using the complement rule:
And using the normal standard distirbution table or excel we got:
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 variable if interest of a population, and for this case we know the distribution for X is given by:
We are interested on this probability
And the best way to solve this problem is using the normal standard distribution and the z score given by:
If we apply this formula to our probability we got this:
And we can find this probability using the complement rule:
And using the normal standard distirbution table or excel we got: