Homework Explained - Math Practice 101

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Grade 7 HMH Go Math - Answer Keys


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12.1 Probability

  • Question 1 (request help)

    Josue tosses a coin and spins the spinner at the right. What are all the possible outcomes?

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12.2 Experimental Probability of Simple Events

  • Question 2 (request help)

    While bowling with friends, Brandy rolls a strike in 6 out of 10 frames. What is the experimental probability that Brandy will roll a strike in the first frame of the next game?

  • Question 3 (request help)

    Ben is greeting customers at a music store. Of the first 20 people he sees enter the store, 13 are wearing jackets and 7 are not. What is the experimental probability that the next person to enter the store will be wearing a jacket?

12.3 Experimental Probability of Compound Events

  • Question 4 (request help)

    Auden rolled two number cubes and recorded the results.

    What is the experimental probability that the sum of the next two numbers rolled is greater than 5?

12.4 Making Predictions with Experimental Probability

  • Question 5 (request help)

    A player on a school baseball team reaches first base \(\frac{3}{10}\) of the time he is at bat. Out of 80 times at bat, about how many times would you predict he will reach first base?

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  Essential Question  

  • Question 6 (request help)

    How is experimental probability used to make predictions?

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