If cos(x) = 0.5, then what is x?
2 answers:
Answer: second option.
Step-by-step explanation:
You have that:
Then, to find the value of "x", you need to apply Arccosine ( This is the inverse function of the cosine).
Therefore, applying this in the procedure, you get that the value of "x" is the following:
You can observe that this matches with the second option.
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Initially = 80 pounds
It triples every 2 hours
2 hours later = 3(80)
4 hours later = 3(3(80)))
6 hours later = 3(3(3(80)))
8 hours later = 3(3(3(3(3(80)))))
8 hours later =
x 80
8 hours later = 6480 (Answer C)
OR
We find the number of 2 hours period in that 8 hours
8 ÷ 2 = 4
It starts at 80 pounds
It tripes every 2 hours
Total algae = x 80 = 6480 (Answer C)
It triples every 2 hours
2 hours later = 3(80)
4 hours later = 3(3(80)))
6 hours later = 3(3(3(80)))
8 hours later = 3(3(3(3(3(80)))))
8 hours later =
8 hours later = 6480 (Answer C)
OR
We find the number of 2 hours period in that 8 hours
8 ÷ 2 = 4
It starts at 80 pounds
It tripes every 2 hours
Total algae =
The sample size is, 9604 if you want to obtain a sample to estimate a population proportion at this point in time, you have no reasonable estimate for the population proportion.
<h3>What is the margin of error(MOE)?</h3>It is defined as an error that gives an idea about the percentage of errors that exist in the real statistical data.
As we know, the sample size can be evaluated using the expression:
or
Here ME = 1% = 0.01
p = 0.5, q = 0.5
Z at α 0.05 (because 95% confident)
= 1.960
n = 9604
Thus, the sample size is, 9604 if you want to obtain a sample to estimate a population proportion at this point in time, you have no reasonable estimate for the population proportion.
Learn more about the Margin of error here:
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