The mean age of a herd of cows is 7.9 years. A cow that is 0.5 years old is added to the herd. How does this cow's age affect the mean?

The new mean will be less than 7.9 years

Step-by-step explanation:

The mean is the same thing as the average.  Because 0.5 is less than 7.9, the average will also decrease.

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a complex number is a number that can be expressed in the form a + bi, where a and b are real numbers, and i is a solution of the equation x2 = −1. because no real number satisfies this equation, i is called an imaginary number. has no real solution, since the square of a real number cannot be negative.