Friday

April 25, 2014

April 25, 2014

Number of results: 6,975

**Math**

In 1983, the population of Functionville was 2560, and it tripled in 6 years. a. Write an exponential model for the population of Functionville t years after 1983. b. According to your model, it what year had the population grown to 7 times its size?
*Sunday, July 15, 2012 at 10:51am by Tony*

**Math**

I know that year 2010, the population is 38.447 million and year 2011, the population is 38.935 million. The formula given: A=36.1e^(0.0126*t) Determine the population in 2010 and 2011 to nearest thousand people. Use these values to determine the increase in population to the ...
*Tuesday, October 30, 2012 at 9:20pm by Melia*

**Fifth Grade Math**

How do you explain how to do this math problem to a child? 7/10 of the U.S. population (175,104,000)in 1991 believed saying A to be true. What is the total population? We are trying to find what the whole population total is. They have given us 7/10 or 1755,104,00. How do we ...
*Monday, December 14, 2009 at 5:21pm by Tiffany T*

**math 5th grade**

how can I find out what 100% of population is when I only know what 70% of population is?
*Wednesday, October 1, 2008 at 1:51pm by Emmy*

**algebra**

Suppose the growth of a population in millions is modeled by 3.2 * (4.72^t. What is the size of the population initially?
*Thursday, February 5, 2009 at 7:55pm by Hannah*

**Advanced Functions**

If a bacteria population doubles in 7 days, when was it half of its present population?
*Wednesday, January 12, 2011 at 4:02pm by Nik*

**math**

suppose the growth of a population in millions is modeled by 3.2*(1.72)^t. what is the size of the population initially?
*Wednesday, January 19, 2011 at 4:04pm by mee*

**to ms .sue **

i see that nebraka's population for 1900 is smaller than nebraksa's population for 2000
*Wednesday, March 28, 2012 at 7:52pm by Celest*

**Biology**

A population of hawks increases in size by 5.5% each year. In how many years will this population quadruple?
*Monday, May 14, 2012 at 5:56pm by Anonymous*

**science**

Identify two effects of tectonic plate movement. then explain how tectonic plate movement cause each of the effects you identified. Please someone help me with this question . The one effect I can think of is they form mountains and volcano but i don't know if it right or wrong.
*Tuesday, April 8, 2008 at 5:35pm by Dj*

**Evirnomental science**

· What air pollutants combine and contribute to this issue? · Briefly describe the health and environmental problems caused by the selected atmospheric issue. · Provide one key solution to help either reduce the effects or recover from the effects of the selected issue.
*Friday, April 16, 2010 at 11:21pm by Anonymous*

**statistics**

is 30 years the average age of a population? describe its population and distribution
*Monday, December 20, 2010 at 10:27am by tasha*

**Statistics for social sciences**

A population with a mean of u=10 has EX=250. How many score are in the population?
*Monday, January 24, 2011 at 4:12pm by Dana*

**statistic**

a population of n = 100 score has u = 30 and standard deviation =4 what is the population variance
*Monday, September 26, 2011 at 9:15pm by mary*

**Algebra**

These data represent the population of a certain city. Year Population(in thousands) 1950 18 1960 23 1970 29 1980 32 1990 38 2000 42 Use the line graph to predict the population in the year 2010 I recommend graphing the points, draw a best fit line, then project it to 2010. I ...
*Monday, May 21, 2007 at 7:43pm by Linda*

**Science**

A newspaper story on AIDS reports that an allele (R) confers complete resistance to HIV when homozygous and that 1% of the human population is resistant (RR). The story also states that 20% of the population carries one copy of the resistance allele (i.e., is heterozygous). Is...
*Sunday, April 7, 2013 at 9:39pm by MT*

**Statistics**

The mean of a population of raw scores is 33 1_X 5 122 . Use the criterion of .05 and the upper tail of the sampling distribution to test whether a sample with X 5 36.8 1N 5 302 represents this population. (a) What is the critical value? (b) Is the sample in the region of ...
*Thursday, February 13, 2014 at 2:09am by Anonymous*

**Socials**

Positive and negative effects of "laissez-faire" This is what I have so far: Positive -more wealth would be distributed among businesses -industries in Britain earned lots of updated technologies that improved industrial processes Negative -workers didn't get to earn much, ...
*Thursday, November 19, 2009 at 7:11pm by Sara*

**social studies**

were the southern states counted in the population during the 3/5 compromise because of the population count?
*Thursday, October 15, 2009 at 10:10pm by Hema*

**math**

what is the population density if your goldfish population was found in 20x30 sq inch rectangular aquarium?
*Wednesday, November 16, 2011 at 4:37pm by dani*

**to ms.sue**

? do i put down ; the population of nebraska in 1900 compares to its population in 2000 by ___________________________________
*Wednesday, March 28, 2012 at 7:03pm by Celest*

**Math**

The doubling time of a city's population is 17 years. How long does it take for the population to quadruple?
*Sunday, October 14, 2012 at 3:57pm by Sam*

**Math**

A weight attached to a spring is pulled down so that it is 10 cm from the floor and is released so that it bounces up and down. When the effects of friction and gravity are ignored. It's height can be modeled by a sine function of the time since it started bouncing. The weight...
*Tuesday, March 6, 2012 at 1:11pm by Safaa*

**Math**

A weight attached to a spring is pulled down so that it is 10 cm from the floor and is released so that it bounces up and down. When the effects of friction and gravity are ignored. It's height can be modeled by a sine function of the time since it started bouncing. The weight...
*Tuesday, March 6, 2012 at 1:21pm by Safaa*

**Algebra**

In the year 2012, the population of India was about 1.22 billion. The exponential function P(t)=1.22(1.021)^t is used to calculate the India's population t years from the year 2012. Estimate the population t year of India in the 2020. Can someone help me break down this ...
*Monday, September 17, 2012 at 5:12pm by ##000000*

**Algebra 1B Chapter 10 **

I'm reclassified but I'm still a 10th grader and the only class I need to take is Algebra1B So here's the problem. I'm 1990, the town of Belgrade, Montana, had a popuof of 3422. For each of the next 8 years, the population increased by 4.9% per year. a. Write an equation for ...
*Monday, November 26, 2012 at 10:38pm by Asheir*

**Algebra 1B Chapter 10 **

I'm reclassified but I'm still a 10th grader and the only class I need to take is Algebra1B So here's the problem. I'm 1990, the town of Belgrade, Montana, had a popuof of 3422. For each of the next 8 years, the population increased by 4.9% per year. a. Write an equation for ...
*Tuesday, November 27, 2012 at 4:59am by Asheir*

**Geography (Ms. Sue) **

1). What are some of the causes of urban sprawl? 2). What are some of the effects of urban sprawl? 3). What happens when metropolitan areas spread farther and farther out? 4). What are some of the negative effects of urban sprawl? My answers to these questions are the ...
*Saturday, September 14, 2013 at 10:28pm by Anonymous*

**Math **

If the doubling time of a state's population is 42 years, how long does it take for the population to increase by a factor of 16?
*Friday, December 4, 2009 at 3:50pm by Randi*

**science**

the carrying capacity for a population is estimated at 500. the population size is currently 400 and r max is 0.01. what is dN/df?
*Wednesday, October 27, 2010 at 1:04am by lisa*

**algebra**

the population P(t) of a new residential development t years after 2010 is P(t)=8000(1-e^-0.3). What is the population for 2015?
*Sunday, December 5, 2010 at 5:51pm by math help*

**math**

The of population Oak Forest is increasing at a rate of 2% a year. If the population is 64,242 today, what will it be in 3 years?
*Monday, November 28, 2011 at 11:05pm by issa*

**5th grade math**

what percent of the total population believed if the population was 136,800,000
*Tuesday, October 16, 2012 at 9:31pm by Anonymous*

**Geometry**

A)What was the mean population of the six continents or land masses that were habitable in 2000? B) What was the mean population in 1950? C) What was the percent incease in the mean population from 1950 to 2000?
*Monday, January 21, 2008 at 8:14pm by greatdanelola*

**US History**

Why did the urban population exceed the rural population in 1920? -MC
*Wednesday, October 13, 2010 at 3:18pm by mysterychicken*

**science**

If a population is not in genetic equilibrium, what must be occurring in the population
*Wednesday, April 10, 2013 at 11:06pm by Lisa*

**Pre-Calcs**

Amount after time t A (t) = yobt Where: yo = starting amount b = growth constant (percent remaining) t = number of time units In the 1978 the population of blue whale in the southern hemisphere was thought to number 5000. Since whaling has been outlawed, and an abundant food ...
*Wednesday, December 1, 2010 at 9:47pm by Kate*

**Physics Changing Acceleration **

Derive position, velocity, and acceleration kinematics equations for an object undergoing a changing acceleration? I understand that somehow we need to get (∆a/∆t) as the change in acceleration into the kinematic equations but I really don't know where to start.
*Saturday, September 28, 2013 at 8:04pm by K*

**Bio**

im stuck on these questions for my study guide Please help! i dont want links. thanks 1. Which of the follwoing would be an appropriate measure of the phenotypic variation of a trait in a population? a) the mean of the trait in the population b) the standard deviation of the ...
*Wednesday, May 25, 2011 at 10:16pm by Philip*

**Reading**

Which sentence best shows a point of view about population growth? A. His new book, TOo many?, is about our planet's growing population B.And the population just keeps growing C.With all those people out there, humans have the ability to do more than ever before. D. In fact, ...
*Monday, March 19, 2012 at 5:02pm by Dally*

**algebra**

A certain population of bacteria doubles every 3 weeks. How long will it take for a population of 3,500 to triple?
*Sunday, April 27, 2008 at 2:31am by Alice*

**Math**

The population of New Hampshire was 1 million in 1990. It doubles every 25 years. Estimate the population in 1996.
*Sunday, August 29, 2010 at 5:39pm by Anonymous*

**American History**

In 1700, which of the following colonies had the largest slave population relative to its overall population?
*Wednesday, July 13, 2011 at 3:40pm by T*

**American History**

In 1700, which of the following colonies had the largest slave population relative to its overall population
*Friday, January 27, 2012 at 7:01pm by Anonymous*

**Math**

The population of a town increased from 55,370 to 162,240 in one decade. What was the percent change of the population?
*Monday, February 13, 2012 at 11:00pm by Marche*

**math**

about 7 tenths of the us population in 1991 believed saying 175,104,000 to be true. what was the population?
*Tuesday, November 20, 2012 at 7:01pm by richie*

**american history**

in 1700 which of the following colonies had the largest slave population relative to its overall population
*Sunday, December 16, 2012 at 12:03am by kim*

**math**

the population of Knoxville is 500,000 and is increasing at the rate of 3.75% each year. Approximately when will the population reach 1 million?
*Sunday, January 12, 2014 at 9:17pm by gina*

**algebra**

suppose that the population of deer in a state is 19,900 and is growing 3% each year. predict the population after 10 years.
*Tuesday, February 4, 2014 at 1:36pm by mobile*

**calculus-changing voltage**

V = IR V is increasing at the rate of 1 volt/sec while I is decreasing at the rate of 1/3 amp/sec. Let t = time in sec What is dV/dt? What is dI/dt? Find the rate at which R is changing when V = 12 volts and I = 2 amp. Thanks. Please ignore this. I got the answer.
*Saturday, December 9, 2006 at 1:18pm by Jen*

**Geography**

Explain five factors that have lead to changing tourist patterns (i.e. growth in this industry) 1) There is only a minor population of MEDC’s which are not employed and a minor population in LEDC’s which are employed and so people tend to work for a less amount of hours and ...
*Saturday, December 26, 2009 at 3:14pm by Numz*

**Social Studies**

How big is japan compared to California? A. Half as large with twice the population B.Twice as large, with half the population C.About the same size with four times the population D. four times as large, with about the same population
*Thursday, January 10, 2013 at 2:49pm by T.J And the Vibe*

**World Geography**

1.Which of the following demographic characteristics distinguishes Europe's population from that of Asia? A.) More Europeans inhabit rural areas. B.) The European population is much younger. C.) Europeans are more concentration in urban areas. D.) Europe has a larger ...
*Friday, May 10, 2013 at 11:33am by Kaitlyn*

**Geography **

Employment opportunities for more than five hundred people will be lost when New Development Solutions, Inc., closes its headquarters in the city of Nowhere, USA. What are effects that the closing of New Development is likely to have on Nowhere? 1)Service industries will close...
*Wednesday, March 10, 2010 at 1:42pm by nicky*

**Math (Statistic)**

Considered the sampling distribution of a sample mean obtained by random sampling from an infinite population. This population has a distribution that is highly skewed toward the larger values. a) How is the mean of the sampling distribution related to the mean of the ...
*Monday, February 19, 2007 at 3:26am by Jennifer*

**Algebra**

Sorry i typed the question wrong. Suppose the growth of a population in millions is modeled by 3.2 * (4.72^t. What is the size of the population initially?
*Thursday, February 5, 2009 at 7:01pm by H*

**math**

If the population is bell-shaped, then the interval that is 3 standard deviation away from the center contains what percent of data in the population?
*Saturday, February 7, 2009 at 7:55pm by Sally*

**mat115**

Use the world population and land area table. What was the population per square mile of Oceana in 2000?
*Sunday, March 22, 2009 at 11:01am by John*

**Math AP Calc**

The population of New Hampshire was 1 million in 1990. It doubles every 25 years. Estimate the population in 1996.
*Sunday, August 29, 2010 at 2:10pm by Leanna*

**statistics**

Build a 95% confidence interval for the mean of the population from the given sample data. Assume that the population has a normal distribution. 16.4, 15.7, 16.2, 15.8 17.1 15.8, 15.9, 16.0, 16.4 15.0
*Wednesday, June 22, 2011 at 8:14pm by Jessica*

**statistics**

An important indicator of lung function is forced expiratory volume(FEV), which is the volume of air that a person can expire in one second. Dr. Jones plans to measure FEv in a random sample of n young women from a certain population, and to use the sample mean as an estimate ...
*Saturday, February 16, 2008 at 5:10pm by lauren*

**statistics**

A population with a mean of u =10 has EX= 250. How many scores are in the population?
*Sunday, May 9, 2010 at 2:49pm by Lisa*

**5th grade**

175104000 is 7 10ths of population what is the population
*Tuesday, October 26, 2010 at 3:21pm by pat*

**Calculus Homework**

You are blowing air into a spherical balloon at a rate of 7 cubic inches per second. The goal of this problem is to answer the following question: What is the rate of change of the surface area of the balloon at time t= 1 second, given that the balloon has a radius of 3 ...
*Wednesday, October 16, 2013 at 10:49pm by Kelly*

**U.S. History**

I'm writing a DBQ Essay on Civil War and Reconstruction. The major question is What led the Southern states to secede from the Union in 1860 and 1861? My question is can i include as a thesis to state the civil war has negative effects than positive effects on the economy and ...
*Sunday, December 20, 2009 at 1:28pm by Priscilla*

**Math**

In a clinical trial, a drug used to relieve pain caused side effects in 7% of the patients who took it. For a new trial, two patients were selected at random. Find the probability that neither of the patients had side effects
*Thursday, January 31, 2013 at 9:21pm by Jessie*

**geography**

Employment opportunities for more than five hundred people will be lost when New Development Solutions, Inc., closes its headquarters in the city of Nowhere, USA. What are effects that the closing of New Development is likely to have on Nowhere? 1)Service industries will close...
*Wednesday, March 10, 2010 at 4:27pm by nicky*

**statistics**

How large a sample should be taken if the population mean is to be estimated with 99% confidence to within $72? The population has a standard deviation of $800.
*Tuesday, November 18, 2008 at 3:04pm by Kennon*

**Calculus**

suppose that a population is dying with a half life of of 43years. The initial size is 1600. Find the 1 year DTDS for this population
*Sunday, February 6, 2011 at 3:43pm by Anonymous*

**Geography (Ms. Sue)**

How might the overall population densities of the Latin America's landmass and population to those of the United States compare?
*Monday, September 23, 2013 at 4:49pm by Anonymous*

**9th grade algebra**

suppose the population of deer in a state is 10,280 and is growing 1% each year. predict the population after 5 years.
*Thursday, February 6, 2014 at 11:47am by mobile*

**ecology**

If you observe no changes in gene frequencies in a population over several generations, can you conclude that the population is not subject to natural selection?
*Thursday, February 20, 2014 at 11:33pm by Bob*

**math**

In a clinical trial, a drug used to relieve pain caused side effects in 9% of the patients who took it. For a new trial, three patients were selected at random. Find the probability that none of those patients had side effects.
*Saturday, March 10, 2012 at 9:48pm by karen*

**Uninhibited Growth**

In 1992, Chad and Denmark each had a population of about 5.2 million. However, the relative growth rate for Chad was 2.5% per year, which Denmark was 0.1% per year. a. assuming exponential growth and the given growth rate, make projections for the population of each nation in ...
*Monday, March 17, 2014 at 8:56pm by Andy G*

**Economics**

1. Using AD/AS, describe the short-run and long-run effects of an increase in the money supply on the equilibrium level of production and the price level. Be sure to explain what happens to Total Expenditures (using the 3 effects of spending changes as a result of changes in ...
*Wednesday, December 7, 2011 at 12:00am by Douglas Walker*

**precal**

You can find the size of a population after t years using the formula N = No(1 + r)t where No is the initial size of the population, N is the final size of the population, r is the rate of growth or decay per time period, and t is the number of time periods. Just over 1 ...
*Tuesday, August 31, 2010 at 5:54pm by Anonymous*

**science**

suppose that a population of skunks lives on an isolated island is 500 skunks are present today and the birth rate is 65 per week and the death is 47 per week how many skunks to you predict will be on the island 105 days from now and what would a graph population versus time ...
*Monday, November 18, 2013 at 3:28pm by Anonymous*

**Science**

suppose that a population of skunks lives on an isolated island is 500 skunks are present today and the birth rate is 65 per week and the death is 47 per week how many skunks to you predict will be on the island 105 days from now and what would a graph population versus time ...
*Sunday, December 22, 2013 at 4:41pm by K*

**Calculus-rates**

1.) A man 6 ft tall walks at a rate of 5 ft per sec. from a light that is 15 ft above the ground. At what rate is the top of his shadow changing? 2.) An airplane flies at an altitude of 5 miles toward a point directly over an observer. The speed of the plane is 600 mph. Find ...
*Thursday, May 5, 2011 at 4:54am by Amy*

**Physics**

A rapidly changing magnetic field in any region of space induces a rapidly changing A.Magnetic field or B.Electric field? which in turn induces a rapidly changing A.Magnetic field B.Electric field?
*Saturday, December 8, 2012 at 3:12pm by Katie*

**Radio**

How is Sirius XM radio different than AM/FM.. I know AM is radio transmissions created by changing the power of the carrier wave, and FM are transmissions created by changing the speed at which radio waves are generated.
*Sunday, October 6, 2013 at 3:22pm by Blaze*

**Physics**

an electric field is produced by a a)consant magnetic field b)changing magnetic field c)either a consant or changing magnetic field d)none of the above I choose b) because in a lab we once dealt with something similar to this question but I can't exactly remember whether it's ...
*Wednesday, April 9, 2008 at 6:29pm by Andrea*

**Algerbra**

I have put together the math in words, please help me show the work in a math format. Info below To find the population growth rate subtract the population of 2006 from 2007. Divide that answer by the 2006 population. Australia’s growth rate from 2006 to 2007 was 0.67% per ...
*Wednesday, October 31, 2007 at 1:54pm by Vision/Help*

**Vision/Help me**

I have put together the math in words, please help me show the work in a math format. Info below Note 1,2,3 To find the population growth rate subtract the population of 2006 from 2007. Divide that answer by the 2006 population. Australia’s growth rate from 2006 to 2007 was 0....
*Thursday, November 1, 2007 at 1:06am by ALGRBRA*

**ALGRBRA**

have put together the math in words, please help me show the work in a math format. Info below Note 1,2,3 To find the population growth rate subtract the population of 2006 from 2007. Divide that answer by the 2006 population. Australia’s growth rate from 2006 to 2007 was 0....
*Thursday, November 1, 2007 at 1:11am by Vision/Help Me*

**math**

A certain strain of virus grows in numbers at the rate of 50% per hour. If its present population is 49,000 what will be its population count in 4 hours?
*Thursday, March 24, 2011 at 10:44pm by denishia*

**match**

A certain land area is 340,000 square miles, and it holds a population of 63.1 million people.Calculate the population density.
*Thursday, February 16, 2012 at 8:50pm by Liz*

**statistics**

Suppose that a given population of trees have an average height of 10.2 ft and a standard deviation of 1.3 ft. Find the proportion of the population with heights above 11.8 ft.
*Thursday, May 3, 2012 at 1:42pm by Erik*

**math**

A bacteria population is currently exactly one million and increasing at a linear rate of 15 per second. What will the population be in two weeks?
*Saturday, December 29, 2012 at 5:03pm by james*

**environmental science**

What are some possible effects of climate change resulting from a warmer earth? Possible effects is melting of the polar caps, and flooding on all continents. Also, weather and rainfall patterns will change, so plants and animal will have a hard time finding food. Basically, ...
*Thursday, May 17, 2007 at 7:21pm by jacqueline*

**Islam in India...Economic effects?**

What economic effects did Islam have in India? I'm having a tough time finding any info for an ESP (Economy, Society, Politics) chart in my book. Any info is welcome and thanked :)
*Monday, April 4, 2011 at 6:34pm by Kate*

**Science Project**

I have to do a project on how smoking effects the environment. I need three sources. I have two already. I need background information, causes of issue, effects, and possible solutions. Help would greatly be appreciated. P.s. project is due Dec. 19, 2008
*Monday, December 15, 2008 at 7:42pm by Jennifer*

**Math-probability**

The theoretical probability of undesirable side effects resulting from taking Grebex is 2 in 19. If 380 people take Grebex to lower their blood pressure, how many will encounter undesirable side effects?
*Tuesday, July 19, 2011 at 1:53pm by Jen*

**world history**

For the period 1500-1830, compare Nirth American racial ideologies and their effects on society with Latin American/Caribbean racial ideologies and their effects on society Help to make an outline
*Saturday, March 17, 2012 at 12:13pm by Kole*

**statistics**

please help me I've waited for hours The average price of a gallon of unleaded regular gasoline was reported to be $2.34 in northern Kentucky (The Cincinnati Enquirer, January 21, 2006). Use this price as the population mean, and assume the population standard deviation is $....
*Tuesday, October 20, 2009 at 12:44am by aaron need urgent help*

**6th grade Math**

I need some help figuring out how to work the word problem below. It says in 2000, the population of the United States was 280 million people. Between 1990 and 2000, the population grew by about 12%. What was the US population in 1990? The answer choices are (A) 250 million, (...
*Thursday, September 13, 2012 at 10:19pm by Brandi*

**Science Project**

I'm doing a project on how smoking effects the environment. Does anyone know a good website where I can find pictures of how smoking effects the environment? Thanks!
*Wednesday, December 17, 2008 at 5:47pm by Jennifer*

**college math**

Aging in the United States In 2050, about 1 over 5 of the population will be aged 65 or over and about 1 over 20 of the population will be aged 85 or over. Estimate the fraction of the population that will be between the ages of 65 and 85 in 2050. (Source: U.S. Census Bureau.)
*Wednesday, October 26, 2011 at 11:07am by tony*

**CACULUS- EXPONENTIAL GROWTH**

A population of animals in an ecological niche is growing in time so that it's rate of growth dp/dt is related to its current size by the differential equation dp/dt = 900/p^2. If time is measured in years and initially there are P(0) = 10 animals present, find the population ...
*Monday, February 9, 2009 at 2:04pm by JIM*

**History-Read**

I responded back to your last post that you didn't read. We can't use any statistics. I re-wrote what i had but can you please tell me what else I should put or how to make it stronger. Does it sound like I'm pro-war? I'm so confused right now. Thank you. I need to add a few ...
*Tuesday, March 31, 2009 at 9:12pm by Kara*

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