Find the area of the shaded region. Show all of your work.
2 answers:
Answer:
The answer in 2 decimal places is 335.01 square inches
Step-by-step explanation:
From the problem, the figure has 3 circles inside the rectangle.
The shaded area is the area of the rectangle minus the areas of the 3 circles.
The rectangle has a dimension of 18 in by 30 in.
The circles have radii of 6 in, 9 in and 12 in.
Calculate the areas :
For rectangle :
A=l x w
A=30 x 18=540
For Circles :
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Answer:
We can conclude that the value of 1732 is a statistic who represent the sample selected. And the value of 1622 represent the population mean from all the customers with the previous data.
Step-by-step explanation:
Previous concepts
A statistic or sample statistic "is any quantity computed from values in a sample", for example the sample mean, sample proportion and standard deviation
A parameter is "any numerical quantity that characterizes a given population or some aspect of it".
Solution to the problem
For this case the analyst knows that from previous records that the mean for all the customers (that represent the population of interest) is
He have a random sample of n =500 customers from the previous month and he knows that 1732 represent the sample mean for the selected customers calculated from the following formula:
So on this case we can conclude that the value of 1732 is a statistic who represent the sample selected. And the value of 1622 represent the population mean from all the customers with the previous data.
Answer:
t = 10.2
Step-by-step explanation:
We have the following exponential equation.
We divide both sides by 500.
We apply logarithm to both sides.
We use the logarithm power rule.
Finally, we solve for t.
t = 10.2