After reading 80% percent of her e-mails in her inbox, danette still has mmm unread e-mails.
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Mathematics, 24.11.2019 00:31 jeto32
After reading 80% percent of her e-mails in her inbox, danette still has mmm unread e-mails.
which of the following expressions could represent the number of e-mails danette had in her inbox before she started reading?
choose 2 answers
(choice a)
a
\dfrac{m}{1-0.8}
1−0.8
m
start fraction, m, divided by, 1, minus, 0, point, 8, end fraction
(choice b)
b
5m5m5, m
(choice c)
c
\dfrac{m}{0.8}
0.8
m
start fraction, m, divided by, 0, point, 8, end fraction
(choice d)
d
1.8m1.8m1, point, 8, m
(choice e)
e
80m80m
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