Use the exponential model and the census figures for 1900 and 1910 to predict the population in 2000.?
Q. The table gives the population of the United States, in millions, for the years 1900-2000. YearPopulation 190076 191092 1920106 1930123 1940131 1950150 1960179 1970203 1980227 1990250 2000275 P(2000) =
Asked by julie - Mon Mar 15 20:14:08 2010 - - 1 Answers - 0 Comments
A. The model is y = Ae^(Bx) where y is population, in millions, and x is the year minus 1900. We need to scale x to keep the x values reasonable. The two equations are 76 = Ae^(0B) 92 = Ae^(10B) The first equation tells us that A = 76 since e^0 = 1. Plug into the second equation, 92 = 76e^(10B) e^(10B) = 92/76 Take the ln of both sides, 10B = ln(92/76) = 0.191055237 So B = 0.019105524 and the equation is y = 76e^(0.019105524x) In 2000, x = 100, so y = 76e^[(0.019105524)(100)] = 76e^(1.910552368) y = 513.5183213 <-- population in 2000 The observed population is 275, so the model is overestimating.
Answered by Robert - Mon Mar 15 20:30:34 2010
Q. The table gives the population of the United States, in millions, for the years 1900-2000. YearPopulation 190076 191092 1920106 1930123 1940131 1950150 1960179 1970203 1980227 1990250 2000275 P(2000) =
Asked by julie - Mon Mar 15 20:14:08 2010 - - 1 Answers - 0 Comments
A. The model is y = Ae^(Bx) where y is population, in millions, and x is the year minus 1900. We need to scale x to keep the x values reasonable. The two equations are 76 = Ae^(0B) 92 = Ae^(10B) The first equation tells us that A = 76 since e^0 = 1. Plug into the second equation, 92 = 76e^(10B) e^(10B) = 92/76 Take the ln of both sides, 10B = ln(92/76) = 0.191055237 So B = 0.019105524 and the equation is y = 76e^(0.019105524x) In 2000, x = 100, so y = 76e^[(0.019105524)(100)] = 76e^(1.910552368) y = 513.5183213 <-- population in 2000 The observed population is 275, so the model is overestimating.
Answered by Robert - Mon Mar 15 20:30:34 2010
geology question?
Q. Census data for the United States taken since 1940 show that the density of population in coastal counties is a.about the same as that in interior counties b.slightly higher than that in interior counties c.much higher than that in interior counties d.lower than that in interior counties
Asked by fabiwabi - Mon Mar 3 12:38:50 2008 - - 2 Answers - 0 Comments
A. C
Answered by adamjc22 - Mon Mar 3 13:03:09 2008
Q. Census data for the United States taken since 1940 show that the density of population in coastal counties is a.about the same as that in interior counties b.slightly higher than that in interior counties c.much higher than that in interior counties d.lower than that in interior counties
Asked by fabiwabi - Mon Mar 3 12:38:50 2008 - - 2 Answers - 0 Comments
A. C
Answered by adamjc22 - Mon Mar 3 13:03:09 2008
Those of you who are generation Y, are you aware that the term "Asian" wasn't invented till the 1980s?
Q. Generation Y YA users, how much do YOU know about the history of "Asians"? But you don't know about it much. If you are interested, read below and share your thoughts. "The 1960 census racial categories included American Indian, Chinese, Filipino, Hawaiian, Japanese, Negro, part Hawaiian, White, Eskimo and Aleut" "The 1970 census racial categories included: Chinese, Filipino, Hawaiian, Indian American, Japanese, Negro or Black, other, White, Hispanic origin of any race, and White, not of Hispanic origin. Mexicans were counted as white from 1930 until 1970, when they re-entered the census as Hispanic origin. It was a deliberate effort to count Hispanics without treating them as a race. They were to be considered a cultural/linguistic… [cont.]
Asked by Yong - Peng Suen - Thu Feb 5 14:37:29 2009 - - 10 Answers - 0 Comments
A. Can You Get a Grip...Lmao.
Answered by x_ od_x - Thu Feb 5 14:40:28 2009
Q. Generation Y YA users, how much do YOU know about the history of "Asians"? But you don't know about it much. If you are interested, read below and share your thoughts. "The 1960 census racial categories included American Indian, Chinese, Filipino, Hawaiian, Japanese, Negro, part Hawaiian, White, Eskimo and Aleut" "The 1970 census racial categories included: Chinese, Filipino, Hawaiian, Indian American, Japanese, Negro or Black, other, White, Hispanic origin of any race, and White, not of Hispanic origin. Mexicans were counted as white from 1930 until 1970, when they re-entered the census as Hispanic origin. It was a deliberate effort to count Hispanics without treating them as a race. They were to be considered a cultural/linguistic… [cont.]
Asked by Yong - Peng Suen - Thu Feb 5 14:37:29 2009 - - 10 Answers - 0 Comments
A. Can You Get a Grip...Lmao.
Answered by x_ od_x - Thu Feb 5 14:40:28 2009
Math test help!!!! 50 point question!!!?
Q. The table gives the population of the united states, in millions for the years 1900-1990? YEAR - Population 1900 - 76 1910 - 92 1920 - 106 1930 -123 1940 -131 1950- 150 1960 - 179 1970- 203 1980 - 227 1990 - 250 A. Use the exponential model and the census figures for 1900 and 1910 to find equation, use that to predict the population for 1990. Compare with the actual figure and try to explain the discrepancy. B. Use the exponential model and the census figures for 1970 and 1980 to find an equation, use that to predict the population for 1990.Compare with the actual population. Use this model to predict the population in the years 2000 and 2010.
Asked by Dani - Sun Apr 6 15:34:48 2008 - - 1 Answers - 0 Comments
A. A. The increase of population from1900 to 1910 was 16 mil which is 21.05% increase. Using that as the percentage in the formula, and 76 as the initial population, the equation is: 76 e^.2105t where t is the number of decades past 1900. The discrepency could be a larger percentage increase between 1900 and 1910 than other decades. B. Using 1970 and 1980 gives a different percentage of increase at 11.82%. The equation now changes to: 203 e^.1182t with t = # of decades so the population prediction is 289.4 mil in 2000 and 325.7 mil. in 2010
Answered by Rusty - Sun Apr 6 20:09:12 2008
Q. The table gives the population of the united states, in millions for the years 1900-1990? YEAR - Population 1900 - 76 1910 - 92 1920 - 106 1930 -123 1940 -131 1950- 150 1960 - 179 1970- 203 1980 - 227 1990 - 250 A. Use the exponential model and the census figures for 1900 and 1910 to find equation, use that to predict the population for 1990. Compare with the actual figure and try to explain the discrepancy. B. Use the exponential model and the census figures for 1970 and 1980 to find an equation, use that to predict the population for 1990.Compare with the actual population. Use this model to predict the population in the years 2000 and 2010.
Asked by Dani - Sun Apr 6 15:34:48 2008 - - 1 Answers - 0 Comments
A. A. The increase of population from1900 to 1910 was 16 mil which is 21.05% increase. Using that as the percentage in the formula, and 76 as the initial population, the equation is: 76 e^.2105t where t is the number of decades past 1900. The discrepency could be a larger percentage increase between 1900 and 1910 than other decades. B. Using 1970 and 1980 gives a different percentage of increase at 11.82%. The equation now changes to: 203 e^.1182t with t = # of decades so the population prediction is 289.4 mil in 2000 and 325.7 mil. in 2010
Answered by Rusty - Sun Apr 6 20:09:12 2008
Calculus word problem?
Q. The table gives the population of the United States, in millions, for the years 1900-2000. YearPopulation 190076 191092 1920106 1930123 1940131 1950150 1960179 1970203 1980227 1990250 2000275 (a) Use the exponential model and the census figures for 1900 and 1910 to predict the population in 2000. P(2000) =___million (b) Use the exponential model and the census figures for 1980 and 1990 to predict the population in 2000. P(2000) =___million
Asked by Mlukm - Wed May 20 23:39:25 2009 - - 1 Answers - 0 Comments
A. don't see why this is a calc problem Oo. Exponential model is A = Pe^(rt) P is how much you start with. A is howmuch you end up with. and t is the amount of time passed. So from 1900 to 1910, the amount of time passed is 10 years, and 76 is how much you start with (P) 92 is how much you end with (A) so you have 92 = 76*e^(r*10) Solve this for r. (I'm too lazy.) and then replace that value of r into your equation. Now you have the power to predict what the population will be in 2000. Just use the started population in 1910 as you (A) and leave P as your variable. Use t = 90, (90 years from 1910 to 2000) and the rate you found in the first problem. The only variable you should have left is P, which is your prediction… [cont.]
Answered by Ken - Wed May 20 23:49:03 2009
Q. The table gives the population of the United States, in millions, for the years 1900-2000. YearPopulation 190076 191092 1920106 1930123 1940131 1950150 1960179 1970203 1980227 1990250 2000275 (a) Use the exponential model and the census figures for 1900 and 1910 to predict the population in 2000. P(2000) =___million (b) Use the exponential model and the census figures for 1980 and 1990 to predict the population in 2000. P(2000) =___million
Asked by Mlukm - Wed May 20 23:39:25 2009 - - 1 Answers - 0 Comments
A. don't see why this is a calc problem Oo. Exponential model is A = Pe^(rt) P is how much you start with. A is howmuch you end up with. and t is the amount of time passed. So from 1900 to 1910, the amount of time passed is 10 years, and 76 is how much you start with (P) 92 is how much you end with (A) so you have 92 = 76*e^(r*10) Solve this for r. (I'm too lazy.) and then replace that value of r into your equation. Now you have the power to predict what the population will be in 2000. Just use the started population in 1910 as you (A) and leave P as your variable. Use t = 90, (90 years from 1910 to 2000) and the rate you found in the first problem. The only variable you should have left is P, which is your prediction… [cont.]
Answered by Ken - Wed May 20 23:49:03 2009
From Yahoo Answer Search: '1940 United States Census'
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TriValley Central The government makes the information available 70 years after each census . The 1940 census is in the works. The census helps to pinpoint where a person was ...
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