Asked by anonymous

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
Answered by Ms. Sue
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.



Answered by anonymous
high school assessment and thank you
Answered by anonymous
how did you get 500 possible points?
Answered by anonymous
and where did you get 0.8?
Answered by PsyDAG
Mean = ∑x/n

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

Answered by anonymous
=86 ok thank you i get it know
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