The size of the sample should be obtained at 2401 in order to be 95% confident
Given that:
Margi of error,
Population proportion,
To Find: The size of the sample that should be obtained in order to be 95% confident
Let the size of the sample be n
Using formula,
Therefore, the size of the sample should be obtained at 2401 in order to be 95% confident
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In the equation 2(x+5) = 2x +5
You need to use distributive property so your answer would be 2x + 10.
So the mistake that was made is...
B: 2 was not multiplied by 5
5x^2= 2205
Divide both sides by 5
x^2=441
Find the square root of both sides
x= 21
2x^-2y^-2 = 2/x^2y^2 = 2/(2)^2 x (3)2 = 2/4 x 9 = 2/36 = 1/18