hsa practice

Stephanie scored 88, 70, 84, and 72 on her first four science tests. What score does Stephanie need on her fifth science test to receive a mean score of 80?

can you give me the steps to solve this im practicing for hsa

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  1. What is hsa?

    She has a total of 314 points now.

    After the fifth test, the total points possible is 500.

    0.8 * 500 = 400

    400 - 314 = 86

    She'll need an 86% to get a mean score of 80.

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    👤
    Ms. Sue
  2. high school assessment and thank you

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  3. how did you get 500 possible points?

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  4. and where did you get 0.8?

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  5. Mean = ∑x/n

    80 = (88+70+84+72+x)/5 = ?

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  6. =86 ok thank you i get it know

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