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

question

what is the value of the third quartile of the data set represented by this box plot? a. 19 b. 21 c. 26 d. 29

answer

c

step-by-step explanation:

12: 00 p.m. to 7: 00 p.m. is a total of 7 hours.

4: 00 p.m. to 7: 00 p.m. is a total of 3 hours.

this means that from 4: 00 p.m to 7: 00 p.m. this represents 3/7 of what was lost from 12: 00 p.m. to 7: 00 p.m.

after knowing this, after doing 11,600 - 6,800 = 4,800

4,800 represents 3/7 of what was lost for 7 hours.

we then divide 4,800 by 3 which gets 1,600.

because we know that 1,600 represents 1/7 of how much water was lost, we just have to multiply by 7, which gets 11,200.   after adding 11,200 to how much water was left at 7: 00 p.m. which was 6,800. 11,200 + 6,800 = 18,000

this means that the pool originally had 18,000 gallons in the pool.

you can also check your work by doing 18,000 - 4(1600), which becomes           1800 - 6400 which gets you 11,600.

answer: i realy don't get it that much can you me figer it out pleas you

step-by-step explanation:

doubled

step-by-step explanation: