A sociologist working with a population of 1200 peoples notices that the populations had increased by ¼ every year during the study. If the pattern continues, after how many years will the population double? 1
2
3
4
5

step-by-step explan mxfcg'k; uafwgzfgjhklhgation:

2 over 5

step-by-step explanation:

the 2: 3 ratio is the length of the ac segment to the cb segment total length. this implies that the ratio between segment ac length and segment ab length is 2: 5. point c is 2/5 from a to b, so the required fraction is 2/5.

56

step-by-step explanation:

it's equivalent, so we can say that its equal.

let's call the denominator x and the numerador is 18 less then denominator, x - 18.

multiply

2.x = 5.(x - 18)

2x = 5x - 90

90 = 5x - 2x

90 = 3x

x = 90/3

x = 30

so: