Apopulation of a certain city decreased from 240,000 in 1985 to 210,000 in 1995 what is the percentage of decrease in the population

12.5%

Step-by-step explanation:

A population of a city went from 240,000 to 210,000, what is the percentage of decrease.

First step is to calculate the amount of the decrease of the population.

It went from 240,00 to 210,000,  so it's a drop of 30,000, right?

To determine the percentage of decrease, we need to see how much that 30,000 weights compared to the original figure of 240,000:

30,000 / 240,000 = 1/8 or 12.5%

i found two solutions,   n = 2 • ± √3 = ± 3.4641

step-by-step explanation:

14

step-by-step explanation:

14 x 3 = 42