Answer:
Sample mean
Sample variance
Sample proportion
Step-by-step explanation:
<span>This is the value of a variable for an entire population. It usually cannot be found directly: the population mean. We can approx. the population mean, or specify an interval in which it is likely to lie, but we generally cannot find the value of the pop mean.</span>
Since the radius is 12, the equation is
.. x^2 +y^2 = 144
Answer:
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Step-by-step explanation:
The angles have to have a 90 degree angle , and they have to be equal too