The city of toronto’s population rose from 2,000,000 to 4,500,000 in the last twenty years of the twentieth

century. what was the annual average percentage increase in population for that period?

 125,000

Step-by-step explanation:

Initial Population                                                  = 2,000,000

Population increase                                             = 4,500,000

Increase in Population                                        = 4,500,000 - 2,000,000

                                                                              = 2,500,000

Duration of  Population increase ( Range)          = 20 years

Therefore, the annual average % increase         = 2,500,000/20

                                                                              = 125,000

an advantage of the standard deviation is that it increases as the dispersion of the data increases. e. the interquartile range is preferred when the data are not skewed or no have outliers. an advantage of the standard deviation is that it uses all the observations in its computation.

second option

step-by-step explanation:

the measures of a triangle equal 180. use that to find x.

2x+3x+4x=180

9x=180

9x/9=180/9

x=20

now you know x, you know angle a is 40°, angle b is 60°, angle c is 80°.

because angle a is 40°, the first option doesn't work.

because angle b is 60°, the second option does work.

when you add angle a and b, you get 100°. complementary means it equals 90°, so the third option doesn't work.

when you add angle a and c, you get 120°, which is not 100.