He base of a pentagonal prism has an area of 2.4 m2. The prism has a volume of 4.8 m3. What is its height? Use sketches, formula
1 answer:
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Answer:
Area of the rectangle is given by:
where
A is the area of the rectangle
l is the length of the rectangle
w is the width of the rectangle respectively.
As per the given statement:
Area of the rectangle(A) = square meters
length of the rectangle(l) = x+8
Substitute these in the given formula we have;
or
Divide both sides by x+8 we have;
meters.
Therefore, the expression represents the width of the rectangle is x-9 meters
<h2>Answer with explanation:</h2>
As per given , we have
Sample size : n= 5
Degree pf freedom = : df= 5-1=4
Significance level for 90% confidence =
Using t-value table , t-critical value for 90% confidence:
Margin of error of :
Interpretation : The repair cost will be within $12.39 of the real population mean value 90% of the time.