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Calculating percentiles
The stem plot gives the distances, in kilometers, that 30 students travel to school.
353
stem leaf
01
8
001
114
4
5
6 8
Col
20
0
1
1
4
4
5
8
AS
310
0
1
3
5
6
6
8 9
TATUS
40
0
2
8
3A-
514
Col
6
3B-
719
Col
Key: 719 = 7.9 kilometers
MY
2 of 4 000
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One-third of the people from country a claim that they are from country b, and the rest admit they are from country a. one-fourth of the people from country claim that they are from country a, and the rest admit they are from country b. in a combined census of the two countries, one-half of the total claimed to be from a. what is the ratio of the populations of country a to that of country b.

The length of a rectangular piece of land is 92 yards more than three times its width. the perimeter is 760 yards. find its dimensions.

Candice uses the function f(t)=t+100−−−−−−√ to model the number of students in her after-school program. the variable t represents days and f(t) represents the number of students. how many days does it take for there to be 15 students in her program? a. 225 days b. 125 days c. 325 days d. 115 days