Ask questions and get helpful responses.

Naturalists findthat the populations of some kinds of predatory animals vary periodically. Assume that the population of foxes in a certain forext vareis sinusoidally iwth time. REcord started being kept when time t = 0 years. A minimum number, 200

24,120 results
  1. PreCalculus

    How do i find the phase shift in this problem Naturalists find that the populations fo some kinds of predatory animals vary periodically. Assume that the population of foxes in a certain forest varies sinusoidally with time. Records started being kept when
  2. PreCalc

    Naturalists find that the populations of some kinds of predatory animals vary periodically. Assume that the population of foxes in a certain forest varies sinusoidally with time. Records started being kept when t = 0 years. A minimum number, 200 foxes,
  3. Pre Calc

    Naturalists findthat the populations of some kinds of predatory animals vary periodically. Assume that the population of foxes in a certain forext vareis sinusoidally iwth time. REcord started being kept when time t = 0 years. A minimum number, 200 foxes,
  4. PreCalc

    h t t p : / / w w w . j i s k h a . c o m / d i s p l a y . c g i ? i d = 1 2 6 0 2 2 5 7 6 7 ok this is what i mean. For exmaple take this problem that I asked for help with before Naturalists find that the populations of some kinds of predatory animals
  5. Calculus

    An animal population is modeled by the function A(t) that satisfies the differential equation dA/dt= A/1125 all this multiplied by (450-A). What is the animal population when the population is increasing most rapidly? a) 45 animals b) 225 animals c) 40
  6. Science

    This graph shows the changes in two populations of herbivores in a grassy field. In the y axis it says number of organisms in the x- axis it says Time In the graph A is decreasing , B is increasing, At first they were steady then slightly A decreased and B
  7. algebra

    3. To estimate animal populations, biologists count the total number of animals in a small section of a habitat. The total population of animals is directly proportional to the size of the habitat (in acres) polled.
  8. algebra

    To estimate animal populations, biologists count the total number of animals in a small section of a habitat. The total population of animals is directly proportional to the size of the habitat (in acres) polled. Write an equation using only one variable
  9. algebra

    To estimate animal populations, biologists count the total number of animals in a small section of a habitat. The total population of animals is directly proportional to the size of the habitat (in acres) polled. Write an equation using only one variable
  10. science

    1.a population of snails on an island is disrupted during a violent storm. portions of the population are carried by the storm surge to two new islands, while a portion remains on the original island creating three separate populations. conditions on one
  11. statistics

    1)Please Help In testing whether the means of two normal populations are equal, summary statistics computed for two independent samples are as follows: Assume that the population variances are equal. Then, the Pooled Variance is equal to: A) 0.1017 B)
  12. Social Studies

    China and India share a distinction regarding their populations. What is it? a. Approximately two-thirds of their populations live in urban areas b. Both populations have grown to more that one billion people c. About 20 percent of their population are
  13. Biology

    1. Two species live in the same area but breed in different parts of their habitat. These species are A) geographically isolated. B) ecologically isolated. C) artificially isolated. D) likely to produce hybrids. 2. A large population of animals is split in
  14. Science

    Ok so, if an ant eats plant sap from aphids and, in turn, protect that plant from ladybugs. Is it: predatory interaction competitive interaction mutual interaction 2: Cheetahs and lions both hunt the same prey in the savanna. Is that: competitive
  15. Bio

    Succession involves one community replacing another. What must be true of each community that appers? A. the population are adapted to their environment B. the populations get larger as the next community is established C.the populations contain very
  16. trig math

    The population of a caribou herd varies sinusoidally with a period of one year. The population is at a minimum at the beginning of the year when the population is about 4000 animals. The population is at a maximum of 7500 animals after 6 months. How many
  17. trig math

    The population of a caribou herd varies sinusoidally with a period of one year. The population is at a minimum at the beginning of the year when the population is about 3000 animals. The population is at a maximum of 8000 animals after 6 months. How many
  18. Biology

    A natural disaster reduces the size of a population. The allele frequencies in the population may change after the disaster. What type of population does this have the strongest evolutionary effect on? a. A small-sized population. b. A large-sized
  19. Algebra II

    3. To estimate animal populations, biologists count the total number of animals in a small section of a habitat. The total population of animals is directly proportional to the size of the habitat (in acres) polled. a. Write an equation using only one
  20. Biology

    Conservationists establish that the minimal viable population of a population of tigers in an extensive geographical area is 16. The current population of tigers is 10. What is likely to happen to the population of tigers? A. Tigers from adjoining
  21. American Government

    Over time, what has been the trend of rural vs. urban population in the United States? a. The rural populations have developed extensive farmland to continue being essential. b. The rural populations have increased, and the urban populations have
  22. statistics

    According to a survey 35% of adults are against using animals for research. Assume that this result holds true for the current population of all adullts. Let X be the number of adults who are against using animals for research in a random sample of 2
  23. English

    1. He has a lot of interesting looks. 2. He has a lot of interested looks. (Which one is correct? Do both have a different meanings?) 3. What animal do you have? - I have a turtle. 4. What kind of animal do you have? - I have a parrot. 5. What animals do
  24. statistics

    In the distributions of two populations combined mean of fourteen observations is 14 and if the sum of the first seven observations for population one and mean of population two are 90 and 16 respectively ,then find the last (eighth)observation of
  25. Social Studies

    Which is the result of zero population growth? a. population stability*** b. no natural increase c. a rapid decline in human population d. the elimination of high-density populations
  26. Geography

    Which is the result of zero population growth? population stability no natural increase*** a rapid decline in human population the elimination of high density populations
  27. Algebra

    3.To estimate animal populations, biologists count the total number of animals in a small section of a habitat. The total population of animals is directly proportional to the size of the habitat (in acres) polled. a.Write an equation using only one
  28. Algebra

    3. To estimate animal populations, biologists count the total number of animals in a small section of a habitat. The total population of animals is directly proportional to the size of the habitat (in acres) polled. a. Write an equation using only one
  29. Math- Algebra

    To estimate animal populations, biologists count the total number of animals in a small section of a habitat. The total population of animals is directly proportional to the size of the habitat (in acres) polled. a.Write an equation using only one variable
  30. Algebra

    To estimate animal populations, biologists count the total number of animals in a small section of a habitat. The total population of animals is directly proportional to the size of the habitat (in acres) polled. a.Write an equation using only one variable
  31. Algebra

    To estimate animal populations, biologists count the total number of animals in a small section of a habitat. The total population of animals is directly proportional to the size of the habitat (in acres) polled. Write an equation using only one variable
  32. Algebra

    To estimate animal populations, biologists count the total number of animals in a small section of a habitat. The total population of animals is directly proportional to the size of the habitat (in acres) polled. a. Write an equation using only one
  33. math

    the population of mun is 3/4 the population of lake. if the sum of their populations is 1960, what is the population of each town
  34. algebra

    What in the world does this mean? To estimate animal populations, biologists count the total number of animals in a small section of a habitat. The total population of animals is directly proportional to the size of the habitat (in acres) polled. a. Write
  35. algebra

    To estimate animal populations, biologists count the total number of animals in a small section of a habitat. The total population of animals is directly proportional to the size of the habitat (in acres) polled. a. Write an equation using only one
  36. 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,
  37. Statistics

    According to a survey 35% of adults are against using animals for research assume that this result holds true for the current population of all adults let XP the number of adults who are against using animals for research in a random sample of two adults
  38. Elementary Statistics

    According to a survey, 35% of adults are against using animals for research. Assume that this result holds true for the current population of all adults. Let x be the number of adults who are against using animals for research in a random sample of two
  39. Algebra

    Since populations are continuously changing based on their immediate previous state, the Pert formula can be used to quickly estimate near future growth (or decay). Assume that the 1990 census for a city of 800,000 reveals an annual increase of 2.3%,
  40. math

    Independent random samples, each containing 800 observations, were selected from two binomial populations. The samples from populations 1 and 2 produced 320 and 400 successes, respectively. Construct a 90% confidence interval for the true difference in
  41. science

    a Drought hits the habitat of a semi-aquatic bird population. All ponds dry up, and fish populations decline. There are two groups of birds in the population that differ in leg length and diet. Long-legged birds eat fish, white short-legged birds eat
  42. Science

    Can you please help me answer just a couple questions A species of flowering plant produces vibrant blue flowers. The flowers attract both pollinators that spread the plant's pollen and herbivores that feed on the plant. An adaptation occurred through
  43. biology

    1. The following shows a food web that was present on the Channel Islands 200 years ago. From the information presented in the article, sketch the following animals into this food web to show how the food web might look today: feral pigs, golden eagles.
  44. Biology

    A population of animals has a dominant allele for dark-colored fur and a recessive allele for light-colored fur. If the population of animals is 100 and 12 members of the population have the light-colored fur, about what percentage of the population is
  45. theory of evolution

    if you guys could check my answers I would be really grateful A species of flowering plant produces vibrant blue flowers. The flowers attract both pollinators that spread the plant's pollen and herbivores that feed on the plant. An adaptation occurred
  46. Algebra II

    I think I need to go backward for my answers. starting with c. As I am no good at math I have to guess I am wrong. Can I get some guidence on how to set up the problem? To estimate animal populations, biologists count the total number of animals in a small
  47. Natural Selection Unit Test

    Consider the following scenario: A drought hits the habitat of a semi-aquatic bird population. All ponds dry up, and fish populations decline. There are two groups of birds in the population that differ in leg length and diet. Long-legged birds eat fish,
  48. science

    Consider the following scenario: A drought hits the habitat of a semi-aquatic bird population. All ponds dry up, and fish populations decline. There are two groups of birds in the population that differ in leg length and diet. Long-legged birds eat fish,
  49. Science

    Sorry Ms Sue I forgot to separate them A species of flowering plant produces vibrant blue flowers. The flowers attract both pollinators that spread the plant's pollen and herbivores that feed on the plant. An adaptation occurred through several generations
  50. Math

    In 1987, the population of Mexico was estimated at 82 million people, with an annual growth rate of 2.5%. The 1987 population of the United States was estimated at 244 million with an annual growth rate of 0.7%. Assume that both populations are growing
  51. 9th grade Algebra

    the population of Concord in 1980 was 400 greater than half the population Euclid. The sum of the two populations was 29,600 less than twice the population of Euclid. What was the population of each city in 1980?
  52. math

    the population of Concord in 1980 was 400 greater than half the population Euclid. The sum of the two populations was 29,600 less than twice the population of Euclid. What was the population of each city in 1980?
  53. environmental science

    Hi. I was wondering if someone could help me grasp a concept. The concept is that soon the world will run out of natural resources to sustain life on Earth as the population increases. This idea is presented in a book I am currently reading, EO Wilson's
  54. Science

    A population of oak trees growing in a region in Canada experiences a change in climate to much colder temperatures and much drier conditions than they have had for many decades. What determines how this population will change in the next few years?
  55. Statistics

    An admissions director wants to estimate the mean age of all students enrolled at a college. The estimate must be within one year of the population mean. Assume the population of ages is normally distributed. Determine the minimum required sample size to
  56. elizabeth high school

    . An admissions director wants to estimate the mean age of all students enrolled at a college. The estimate must be within one year of the population mean. Assume the population of ages is normally distributed. Determine the minimum required sample size to
  57. Science

    A(n)____ animal is an animal that lives in a group. Social Independent Predatory Scavengering Please anwser ASAP thanks. Social animals live in groups. Thought so thanks.
  58. Trig

    A population of animals oscillates annually from a low of 1300 on January 1st to a high of 2200 on July 1st, and back to a low of 1300 on the following January. Assume that the population is well-approximated by a sine or a cosine function. a. Find a
  59. Geography

    Which of the following statements does NOT correctly describe current population trends? A. Over the past 100 years, population growth has been rapid. ******** B. Population growth rates are slowing in most places. C. Some countries face challenges
  60. Math

    1. A car is worth $23000 in Jan 2017 in the first year the car depreciates by 15 percent per annum and then 7 percent every year after that. a) what will the car be worth in Jan 2023? b) when will the car be worth $5000? 2. In 2017 the population of a
  61. science

    Consider the following scenario: A drought hits the habitat of a semi-aquatic bird population. All ponds dry up, and fish populations decline. There are two groups of birds in the population that differ in leg length and diet. Long-legged birds eat fish,
  62. science

    Consider the following scenario: A drought hits the habitat of a semi-aquatic bird population. All ponds dry up, and fish populations decline. There are two groups of birds in the population that differ in leg length and diet. Long-legged birds eat fish,
  63. Biology 30

    In what size populations might you expect it to be relatively common for alleles to become fixed? Why? I think that larger populations would be more likely to have fixed alleles, since perfect Hardy-Weinberg equilibrium states that there will be no change
  64. science

    How might fossils help plaeontogists to learn about important behaviors of diffrent types of animals. what social behaviors might they provide? How they lived, where they lived, and when they lived. Different kinds of animals in the same area would provide
  65. Statistics (urgent)

    A beverage comopany uses a machine to automatically fill 1-liter bottles. Assume that the population of volumes is normally distributed. The company wants to estimate the mean volume of water to within 1 ML. Determine the minimum sample size required to
  66. lang art

    1. Read the sentence from "Zoos: Joys or Jails?" What clue word is used to show contrast between the two points of view? "Although the circumstances and reasons for animals being in zoos vary, its concept has faults many don't notice during their visit
  67. Statistics in Psychology

    QUESTION 25: In a study you obtain the following data representing the aggressive tendencies of some football players:40 30 39 40 41 39 31 28 33(a) Researchers have found that � is 30 in the population of nonfootball players, 1�X 5 5. 2 Using both tails of
  68. Stats

    The Economic Policy Institute periodically issues reports on worker’s wages. The institute reported that mean wages for male college graduates were $37.39 per hour and for female college graduates were $27.83 per hour in 2017. Assume the standard
  69. algebra

    To estimate animal populations, biologists count the total number of animals in a small section of a habitat. The total population of animals is directly proportional to the size of the habitat(in acres)polled. a. Write an equation using only one variable
  70. Statistics

    The null and alternate hypotheses are: H0: μ1 = μ2 H1: μ1 ≠ μ2 A random sample of 15 items from the first population showed a mean of 50 and a standard deviation of 5. A sample of 12 items for the second population showed a mean of 46 and a standard
  71. statistic

    Many wildlife populations are monitored by taking aerial photographs. Information about the number of animals and their whereabouts is important to protecting certain species and to ensuring the safety of surrounding human populations. In addition, it is
  72. Language arts

    1. Read the sentence from "Zoos: Joys or Jails?" What clue word is used to show contrast between the two points of view? "Although the circumstances and reasons for animals being in zoos vary, its concept has faults many don't notice during their visit
  73. statistics

    A restaurant menu has 5 kinds of soups, ten kinds of main courses, six kinds of desserts, and eight kinds of drinks. If a customer selects one item from each category, how many different outcomes are possible?
  74. Math

    At Paw's Pet Store, 2animals share each cage.The table below shows how many animals are in the store now. Find the quotient. Tell which way you used. Animal. Number Mice. 22 Snakes. 4 Hamsters. 18 Cats. 12 Birds. 16 Guinea pigs. 10 Rabbits. 14 Lizards. 6
  75. Pre-Calculus/Math

    a slow growing population of animals increases with time (years). the size of the population is given by P(t)=100+0.6t^2-0.004t^3. how fast is the population changing after 10 years?
  76. Science answer check

    1 of 4 Items Item 1 Which statement is correct about a bottleneck event? (1 point) A bottleneck event decreases the population of a species permanently. A bottleneck event increases the population of a species permanently. A bottleneck event decreases the
  77. math, calculus

    Assume that a population was 853 when t=0, and 3 years later it became 2314. Assuming the population grows exponentially, write a formula for the size of the population in t years: Population = What is the population when t = 12?:
  78. biology

    Salt is notoriously dangerous to land snails; however, some populations of aquatic, freshwater snail have brackish (or a mix of salt and fresh water) water adaptations and live in different parts of a river system. A group of scientists monitored salt
  79. Biology

    do you know if there are any good websites on population distrubution patterns and relevant adaptations of organisms? You need to choose a population. A species of orchids? A species of animals (kangaroo, etc)? A type of bird? A disease vector ? Make a
  80. Science

    [I'm not to sure. I think it's c.] What group of organisms are most in danger of extinction? a.those with small populations b.those that migrate or need special habitats c.those with large populations that breed quickly d.both (a) and (b) Nuts to c, if the
  81. Science

    Question 1 Which of the following is nota way that human activity has negatively affected the biodiversity of ecosystems? Group of answer choices Habitat destruction Introduction of invasive species Planting of trees Overexploitation Question 2 What must a
  82. Science

    Marine biologist Dr. James Estes researched sea otters and their habitats in the Aleutian Islands of the North Pacific Ocean. Sea otters feed on animals such as crabs and urchins. Islands with sea otters contained a lot of kelp, a seaweed that is an
  83. Science

    Which of the following determines the type of biome classification that will be made for a particular region? Climate Size Mineral deposits Number of human settlements Think about how the amount of energy changes as you move stepwise from producers to
  84. stats multiple choice ?

    A researcher reports that "Students were randomly assignment to intervention or a control group; the two groups did not differ significantly prior to the start of the intervention. At the end of the study, those receiving the intervention showed
  85. stats multiple choice ?

    A researcher reports that "Students were randomly assignment to intervention or a control group; the two groups did not differ significantly prior to the start of the intervention. At the end of the study, those receiving the intervention showed
  86. Explain Natural Selection Quick Check

    Here are the answers to double check! These are 100% correct. 1. Populations 2. Natural selection does not change the alleles an organism has 3. A mutation causes a specific advantage within the population 4. Brown fur will become predominant 5. the
  87. Biology

    Which of the following statements are accurate? A. All animals are prokaryotes B. All animals are autotrophic eukaryotes C. All animals have tissues D. All animals have organs E. All animals are multicellular.
  88. math

    Katrina is studying the effect of foreign substances on bacteria populations. If she introduces a beneficial substance, such as food, the bacteria population grows. If she introduces a harmful substance, such as a poison, the bacteria population decreases.
  89. math

    Use Hamilton's plan to apportion the new seats to the existing states. Which state illustrates the Alabama paradox? Assume that the populations are in thousands. 1 State A B C D E Population 300 701 800 700 800 Number of seats 82
  90. Calculus

    The CIA published data about foreign countries on its web page. In particular they show total population as well as population growth. If a student is looking at Russia, they will see that the total population of Russia is declining. When they look at the
  91. Science

    Studies indicate that fertilizers from nearby farm fields have entered a lake. Which of the following describes a likely change in this ecosystem in the future? A.Algae populations will increase and trout populations will decrease.* B.Algae populations
  92. math

    A store sells clothes for men. It has 3 kinds of jackets, 7 kinds of shirts, and 5 kinds of pants. Find the number ofways a person can buy: (a) one of the items; (b) one of each of the three kinds of clothes.
  93. Statistics

    The Economic Policy Institute periodically issues reports on wages of entry-level workers. The institute reported that entry-level wages for male college graduates were $21.68 per hour and for female college graduates were $18.80 per hour in 2011 (Economic
  94. Algebra

    The town of Appleville recorded the following dates and populations. YEAR POPULATION (in thousands) 1980 51.5 1985 53 1990 56 1995 62 Estimate the approximate population of Appleville in 1988 by finding an equation and then substituting.
  95. Science

    In my book it says Individuals of the same kind living in the same evnironment make up a population. All the grasshoppers in a field are the grasshopper population. All the populations of organisms living together in an environment make up a community What
  96. Biology

    Darwin believed that Malthus' ideas about human populations applied more strongly to animals and plants. Why?
  97. Biology help

    Why do the physical characteristics of the overall population change? Why do some animals die and some thrive? In natural selections why do the animals die?
  98. Biology

    Why do the physical characteristics of the overall population change? Why do some animals die and some thrive? In natural selections why do the animals die?
  99. English

    I vary the last sentence. Could you check it please? In conclusion, he says that though the populations of many marine species are decreasing very quickly, people have not been aware of the problems with ocean wildlife because these species are not
  100. math

    A medical researcher wants to determine whether male pulse rates vary more or less than female pulse rates. Using the sample pulse rates in Data Set 1 in Appendix B, the male pulse rates can be summarized with the statistics 40=n,69.4=x,11.3=s. For

Pages

  1. 1
  2. 2
  3. 3
  4. 4
  5. 5
  6. 6
  7. 7
  8. 8
  9. 9
  10. 10
  11. 11
  12. 12
  13. 13
  14. 14
  15. 15
  16. 16
  17. 17
  18. 18
  19. 19
  20. 20