The number of potholes in any given 1 mile stretch of freeway pavement in Pennsylvania has a bell shaped distribution. This distribution has a mean of 50 and a standard deviation of 5. Using the empirical rule what is the approximate percentage of 1 mile long roadways with potholes numbering 45 and 60

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2 equivalent expressions to represent the area of a rectangle and the top is n-3 and the side is 2

area of the rectangle = length * width

given length = n - 3

width = 2

replace it in the area

so area of the rectangle = (n-3) *2

= 2(n-3)

one of the expression is 2(n-3)

to get another expression we distribute 2 inside the parenthesis

2(n-3) is 2n - 6

so another expression is 2n - 6

two equivalent expression are

2(n - 3)   , 2n - 6

7 9/10 as an improper fractions is 79/10.

hope it : )