It costs $900 to run a water treatment facility machine for 4 hours. Jake spent $4500 to run the machine. For how many hours did
2 answers:
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Answer:
A
The value is
B
The value is
Step-by-step explanation:
From the question we are told that
The population mean is
The standard deviation is
The sample size is n = 25
Generally the probability that a boy born full term in the US weighs less than 7 lbs is mathematically represented as
=>
From the z table the area under the normal curve to the left corresponding to -0.6364 is
=>
Generally the standard error of mean is mathematically represented as
=>
=>
Generally the probability that the average weight of 25 baby boys born in a particular hospital have an average weight less than 7 lbs is mathematically represented as
=>
From the z table the area under the normal curve to the left corresponding to -3.1818 is
=>
=>
In the half-angle formula for sine and cosine, notice that a plus/minus sign appears in front of each radical (square root). Whether your answer is positive or negative depends on which quadrant the new angle (the half angle) is in
has critical points where the derivative is 0:
The second derivative is
and , which indicates a local minimum at
with a value of
.
At the endpoints of [-2, 2], we have and
, so that
has an absolute minimum of
and an absolute maximum of
on [-2, 2].
So we have