jbaile60 jbaile60

01-04-2020
Mathematics

contestada

It takes Nina 2 hours to proof a chapter of Hawkes Learning Systems' Intermediate Algebra book and it takes Bethany 9 hours. How long would it take them working together?

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katiemooneey katiemooneey

03-04-2020

Answer:

5.5 hours

Step-by-step explanation:

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