I can’t type it out but the equation is Pi(radius)^2
Answer:
The value of test statistic is -2.
Step-by-step explanation:
The following information is missing in the question.
The population mean is 12 minutes.
We are given the following in the question:
Population mean, μ = 12 minutes
Sample mean, 
= 8 minutes
Sample size, n = 36
Population standard deviation, σ = 12 minutes
Formula:
Putting all the values, we have
The value of test statistic is -2.
Answer: Choice B
They traveled 250 miles in 4 hours. Their speed was 62.5 mph.
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Explanation:
Start at point X. Draw a horizontal line straight across until you reach the y axis. You should arrive at y = 250. This tells us that they traveled 250 miles.
Go back to point X. Draw a vertical line until you reach the x axis. You should reach x = 4. This indicates 4 hours.
Pairing up the two values together means they traveled 250 miles in 4 hours. Divide the distance over time to get the speed
speed = distance/time = 250/4 = 62.5 miles per hour
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Side note: unfortunately your teacher chose the label uppercase X for the point, which may be a bit confusing since it could clash with the lowercase x along the horizontal axis.
Another note: the speed represents the slope of the line
Answer:
60 numbers
Step-by-step explanation:
For this problem, it is best to draw a plane showing the positive and negative, in x and y axes.
Since it is given that the coordinates of the epicenter is at (0,0), thus it is at the center of the plane.
In order to find the outside boundary of the earthquake, the center-radius equation can be used as follows:
[(x-h)^2] - [(y-k)^2] = r^2
where, (h,k) is the coordinates of the center, which is (0,0), and r is the radius which is equal to 52.
Substituting these values into the standard center-radius equation,
x^2 - y^2 = 52^2
The answer is,
x^2 - y^2 = 2704
