10040813
13.09.2019 •
Mathematics
Lucy earns money babysitting. her earnings and hours worked represent a direct variation. she worked for 4 hours and earned $25. determine the constant of proportionality for dollars earned per hour worked
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Ответ:
25. 9/20
Steps-
1) Simplify 1/5 and 1/4
2) Find the common denominator
4/20+5/20
3) (4+5)/20
4) 9/20
Answer- 9/20
Try the rest on your own! :)