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.

Hope it helps <3

Part A. He exercised for 1.5 hours.

60 + 30 = 1.5 hours.

Part B. Jacob spends 15 minutes doing freehand exercise.

Part C. No, because he spent 1.5 hours altogether.