Math Practice 101
Homework Explained - Math Practice 101

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Grade 7 HMH Go Math - Answer Keys


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  • Question 9 (request help)

    Multistep

    A 64-acre coconut farm is arranged in an 8-by-8 array. Mika wants to know the average number of coconut palms on each acre. Each cell in the table represents an acre of land. The number in each cell tells how many coconut palms grow on that particular acre.

    a. The numbers in green represent Mika’s random sample of 10 acres. What is the average number of coconut palms on the randomly selected acres?
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  • Question 9 (request help)

    b. Project the number of palms on the entire farm.
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  H.O.T.  

  Focus on Higher Order Thinking  

  • Question 10 (request help)

    Draw Conclusions

    A random sample of 15 of the 78 competitors at a middle school gymnastics competition are asked their height. The data set lists the heights in inches: 55, 57, 57, 58, 59, 59, 59, 59, 59, 61, 62, 62, 63, 64, 66. What is the mean height of the sample? Do you think this is a reasonable prediction of the mean height of all competitors? Explain.
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  • Question 11 (request help)

    Critical Thinking

    The six-by-six grid contains the ages of actors in a youth Shakespeare festival. Describe a method for randomly selecting 8 cells by using number cubes. Then calculate the average of the 8 values you found.
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  • Question 12 (request help)

    Communicating Mathematical Ideas

    Describe how the size of a random sample affects how well it represents a population as a whole.
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