The margin of error of the random selection is 0.20
The given parameters are:
--- the sample size
--- the standard deviation
--- the mean
--- the confidence level.
The margin of error (E) is calculated as follows:
So, we have:
The z-value for 99% confidence level is 2.576.
Substitute 2.576 for z
Take square roots
Multiply
Approximate
Hence, the margin of error is 0.20
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Yes, on the left side you are adding 3x+2 in one and 2+3x in the other. these add to the same number because addition is Commutative on the real numbers.
Answer:
about 28.8 ft.
Step-by-step explanation:
7x-4y just combine all the x and all the y sice both the x here are positive you add them and there is only one y so just keep it as it is
Greatest common factor of 39 and 91 is 13
