dd123984
13.03.2020 •
Mathematics
A $649 laptop computer cost $519.20 after a coupon is applied. What percentage off is the coupon?
A) 10%
B) 15%
C) 20%
D) 25%
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Ответ:
c. an experiment.
step-by-step explanation:
in an experiment, groups receive different treatments and the results are measured. in this case, the treatment is the type of feed.