Answer:
The 90% confidence interval would be given by (0.466;0.694)
Step-by-step explanation:
The estimated proportion of interest would be:
In order to find the critical value we need to take in count that we are finding the interval for a proportion, so on this case we need to use the z distribution. Since our interval is at 90% of confidence, our significance level would be given by 
and 
. And the critical value would be given by:
The confidence interval for the mean is given by the following formula:
If we replace the values obtained we got:
The 90% confidence interval would be given by (0.466;0.694)
49.87777777777778
easy divsion
Answer:
x²(x-2) or x²(x+1)
Step-by-step explanation:
Even though the figure showing the prism is missing, we can already make a few assumptions about how to answer the question.
It tells us that it is an oblique square prism. Using this information, we can assume that of the dimensions (length, width and height), length and width are assumed to be equal.
If the unknown dimensions needed to calculate volume are written as:
Volume = X x Y x Z (and length and width are the same, we can simplify)
Volume = X² x Z
Hence we need a x² in our answer.
In order to narrow it down between the two remaining options, the diagram is needed. If the height is shorter than the length, then the answer would be x²(x-2), however if the height is longer than the length, then the answer would be x²(x+1).
The answer is 9m(with a 2 above the m in 9m) n(with a 2 above the n) +9mm-40
Y-6=7(x-3)
The point-slope intercept form of a line that has a slope of 7 and passes through the point (-6,3) is y - 6 = 7 (x - 3)
