Muffins = 3.50beverage = 1.75total number of items = 32total cost = 87.50
m + b = 323.50m + 1.75b = 87.50
m = 32 - b
3.50(32-b) + 1.75b = 87.50112 - 3.50b + 1.75b = 87.50-3.50b + 1.75b = 87.50 - 112-1.75b = -24.50b = -24.50 / -1.75b = 14
m = 32 - bm = 18
The class bought 18 muffins and 14 beverages.
3.50m + 1.75b = 87.503.50(18) + 1.75(14) = 87.5063 + 24.50 = 87.5087.50 = 87.50
Hope this helped! (:
Hello, This is correct.
first one is whole numbers
the third one natural numbers
the fourth are complex numbers
The last one is irrational numbers
This means that the sample mean is not systematically smaller or larger than the population mean. Or put another way, if we were to repeatedly take lots and lots (actually an infinite number) of samples, the mean of the sample means would equal the population mean.