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mirmir62
10.09.2021 •
Mathematics
An electric bill is an essential expense for young people who get their first apartment. The following is a list of Jordan’s monthly electric bills for the past 10 months.
$115, $150, $144, $126, $90, $90, $95, $110, $120, $88
Round your answers to the nearest cent.
What is the mean monthly electric bill?
What is the range?
What is the variance?
What is the standard deviation?
Solved
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Ответ:
The longest side of a triangle is always opposite the largest angle of a triangle.
If the smallest angle of the triangle is 20 degrees, then the shortest side is opposite to it. Using this information, we can form the equality
20/100(longest leg/biggest angle) = x/20(shortest leg/smallest angle)
We can cross multiply this to get 400 = 100x. From here it is a simple "find x" and the shortest side is 4 feet.