Margo can purchase tile at a store for $0.89 per tile and rent a tile saw for $27. At another store she can borrow the tile saw
1 answer:
You might be interested in
Answer:
And if we solve for a we got
And the limits for this case are: (214.4; 295.4)
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 annual precipitation of a population, and for this case we know the distribution for X is given by:
Where and
The confidence level is 95.44 and the signficance is and the value of
. And the critical value for this case is
Using this condition we can find the limits
And if we solve for a we got
And the limits for this case are: (214.4; 295.4)
The central angle that captures the brown arc is 120°. To find out what fraction of the total circumference the brown arc is, we can find the ratio of this 120° angle to the total central angle of a circle, which is 360°. So we have:
Now we know the brown arc is
of the total circumference. The circumference is π*diameter, so in this case it’s 24π.
Finally, we do:
Now we know the brown arc is
Finally, we do:
Answer:
(0,0)
Step-by-step explanation:
Orthocenter is the intersection of the three altitudes in a triangle.
https://www.wolframalpha.com/widgets/view.jsp?id=c17a1939f921b8bf84b5ddb332a9a634
