When Amber does her math homework she finishes 10 problems every 7 minuets.How long will it take for her to complete 35 problems
2 answers:
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Answer:
2.0
Step-by-step explanation:
Couldn't really understnd what you wrote but I'll assume it's the standard deviation of a fair, 7-sided die
The standard deviation is just the square root of the variance (which is just the second moment minus the first moment squared)
The first moment (AKA the average is..)
The second moment is..
Answer:
Step-by-step explanation:
we are given that A vegetable garden and a surrounding as a shaped like a square that together a 11 ft wide. The path is 2 feet wide.since together the width of Vegetable garden and path is 11 ft, the width of the vegetables garden will be the difference between the total width and the width of path Thus,
simplify substraction:
recall that, every single side of a square is equal to each other therefore the the area of the garden will be
simplify square:
together the garden and path makes a square of every side length 11 ft saying that the area will be:
simplify square:
the area of path will be the difference between the total area and the garden area therefore,
simplify addition:
to figure out how many bags are needed to cover the path. we just need to divide the area of the path by the area of a bag of gravel and that yields:
simplify division:
hence,
<u>4</u> bags are needed to cover the path.