Asmall train at an amusement park is carrying passengers. half of the passengers are 6 years old, 1/10 are 7 years old, 1/5 are 8 years old, and 1/5 are 9 years old.

what is the expected age for one of the passengers on the train?

question 4 options:

6 years

7.1 years

8 years

8.5 years

6·0.5 + 7·0.1 + 8·0.2 + 9·0.2 = 7.1

So the correct answer is 7.1 years.

answer: 12

step-by-step explanation:

maximum area = xy = (16)(32) = 512 ft2

to maximize the area of the garden, the side of the fence parallel to the side of the house should be 32 ft long, and the other two sides should both have length 16 ft.'

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