1. Algebra2

    It will rain 6 days in May; and will be very overcast 10 days. The other days will be sunny. What is the Probibility of sun? What are the odds of sun?
  2. Algebra

    During the last 365 days it was sunny 5 days less than 4 times the number of rainy days. How many days did it rain?
  3. math

    The sanchez family soent 15 days at the seashore. 12 of the days were warm and sunny. What percent of their days were warm and sunny?
  4. chemistry

    The disintegration of a radioisotope, such as I-131 to Xe-131, is another example of a first-order reaction. It has a half-life of 8.0 days. I-131 -> Xe-131 + e If you start with 1.40 g I-131, how many grams of I-131 will be left after the following
  5. math

    of the following which is the closest approximation to the amount of time it takes to read a 487-page book at the rate of 25 pages a day ? a. 20 days b.25 days c.15 days d.10 days e.30 days
  6. Math

    Ansgar is writing a novel. He writes seven days a week. On each of those days he write for at least 4 hours but never more than 8 hours. Last week, he wrote for exactly 46 hours. What is the maximum number of days on which he could have written for 8
  7. adult education

    Given Data: Total Sales: $912,500 % of customers that take discounts: 40% % of customers that do not take discounts: 60% # of days that cusomers who take discounts pay by: 10 Days # of days that customers who do not take discounts pay by: 40 Days # of days
  8. Financing and Budget

    The Average Daily Rate ratio, often used by outsiders as an evaluation of how much revenue is earned each day, is usually calculated on the basis of how many days? A. 365 days B. 30 days C. Number of days a child care facility is open D. 360 days A.
  9. Financing and Budget

    The Average Daily Rate ratio, often used by outsiders as an evaluation of how much revenue is earned each day, is usually calculated on the basis of how many days?  A. 365 days  B. 30 days  C. Number of days a child care facility is open  D. 360 days 
  10. Financing and Budget

    The Average Daily Rate ratio, often used by outsiders as an evaluation of how much revenue is earned each day, is usually calculated on the basis of how many days? A. 365 days  B. 30 days  C. Number of days a child care facility is open  D. 360 days A.
  11. Algebra

    Two different radioactive isotopes decay to 10% of their respective original amounts. Isotope A does this is 33 days, while isotope B does this in 43 days. What is the approximate difference in the half-lives of the isotopes? 3 days 10 days 13 days 33 days
  12. MAT 201

    The number of vacation days taken by employees of a company is normally distributed with a mean of 14 days and a standard deviation of 3 days. For the next employee, what is the probability that the number of days of vacation taken is less than 10 days?
  13. statistics

    The number of vacation days taken by employees of a company is normally distributed with a mean of 14 days and a standard deviation of 3 days. For the next employee, what is the probability that the number of days of vacation taken is less than 10 days?
  14. statistics

    The number of vacation days taken by employees of a company is normally distributed with a mean of 14 days and a standard deviation of 3 days. For the next employee, what is the probability that the number of days of vacation taken is less than 10 days?
  15. science

    During the month of November, it rained on 12 of the 30 days. It also snowed on 3 days. On what percent did it rain? On what percent of days did it snow?
  16. math

    estimate the difference in precipitation between 124 days of rain in N.N. and 85 days of rain in Kansas
  17. Math

    Ansgar is writing a novel. He writes seven days a week. On each of those days he writes for at least 4 hours but never more than 8 hours. Last week, he wrote for exactly 46 hours. What is the maximum number of days on which he could have written for 8
  18. possessive nouns

    Soldiers carried several ___ cold rations. Is it A. days B day's C.days' D. days's My answer is c. days'
  19. English

    Soldiers carried several days cold nations. should days chage to a possessive noun from days to days'
  20. time n work

    a and b together can do a piece of work in16 days.b and c can do same work in 32 days.after a worked for 4 days and b for 12 days c takes it up and finishes it in 48 days.in how many days will each of them complete work
  21. algebra

    The U.S. Weather Service reports that in a certain northern city it rains 35 days and snows 40 days in the winter. However, it rains and snows on only 10 of those days. Based on this information, what is the probability that it will rain or snow in that
  22. algebra

    The U.S. Weather Service reports that in a certain northern city it rains 35 days and snows 40 days in the winter. However, it rains and snows on only 10 of those days. Based on this information, what is the probability that it will rain or snow in that
  23. statistic

    in a beacside it rains on 20percent of days and is windy on 30percent a days.if rain and wind are independent on any particular days find the probability that it rains and it windy
  24. math

    break it down into cases at most one day of rain in 3 days to me means we could have: norain norain norain ----> (1/3)^3 = 1/27 rain norain norain -------> 2/3(1/3^2 = 2/27 norain rain norain -------> same as above = 2/27 norain norain rain
  25. Math with science

    Radioactive iodine treatment is so successful at treating hyperthyroidism that it has virtually replaced thyroid surgery. To the nearest full day, determine how long it will take for 400 millicuries of I-131, which has a half-life of 8 days, to decay to
  26. Math

    At the South Pole there is no sunshine for 182 days every year, and at the North pole the same applies for 176 days per year. What total would you have if you were to combine these two figures. A 359 days a year B 358 days a year C 357 days a year D 335
  27. Math

    A weather forecast states that there is a 20% probability of rain on each of the next 3 days. Describe a simulation you could perform using random numbers to find the experimental probability that it will not rain on any of the next 3 days. Would love
  28. Environmental Science

    A nuclear burning power plant produces a total power of 1.1kW. It serves a community that requires 2.85 x 107 kJ of power over the entire year. How many days per year does the power plant need to operate to provide all this power? 300 days 250 days 365
  29. AP CALC

    1.Suppose the amount of water collected from a mountain spring decreases over the summer at a rate of 1.5% per day. When will the spring's output fall to four-fifths its present level? Select one: a. 61.086 days b. 34.055 days c. 14.876 days d. 3.347 days
  30. senior problem solving

    a colony of ants doubles every 20 days. if the colony has 350 ants today, how many are/were present in 50 days? a. in 50 days? b. 55 days ago? c. in 30 days?
  31. math

    If Sam can do a job in 4 days that Lisa can do in 6 days and Tom can do in 2 days, how long would the job take if Sam, Lisa, and Tom worked together to complete it? A. 0.8 days B. 1.09 days C. 1.23 days D. 1.65 days E. 1.97 days thanks.
  32. math

    Sam can do a job in 4 days that Lisa can do in 6 days and Tom can do in 2 days, how long would the job take if Sam, Lisa, and Tom worked together to complete it? A. 0.8 days B. 1.09 days C. 1.23 days D. 1.65 days E. 1.97 days thanks.
  33. math

    Last year it rained on 63 days in mudville.There were 7 times as many days of rain in mudville as in desert hills.How many days did it rain in desert last year?
  34. Maths

    A group of 48 ants have food for 16 days but 12 ants died after 4 days due to rain. For how many days the remaining food will be enough
  35. Statistics

    The lengths of pregnancies are normally distributed with a mean of 273 days and a standard deviation of 20 days. If 64 women are randomly selected, find the probability that they have a mean pregnancy between 273 days and 275 days.
  36. Science

    Which of the following is the smallest conceivable amount of time that could pass between a lunar eclipse and a solar eclipse? a. about 14 days* b. about 28 days c. about 183 days d. about 365 days
  37. science

    which of the following is the smallest conceivable amount of time that could pass between a lunar eclipse and a solar eclipse ? a) about 14 days b) about 28 days c) about 183 days d) about 365 days
  38. math

    Solve the following equation: 4/7 x = -16 A)x = 42 B)x = -28 C)x = 23 D)x = -24 Solve the following equation. 4s+13+s=2s+40-6 A)s = 12 B)s = -10 C)s = no solution D)s = 7 You train for the Olympics 120 minutes each day. How many days have you trained when
  39. Algebra

    A population of insects increases at a rate of 1.5% per day. About how long will it take the population to double? 2.5 days 5.0 days 46.6 days 66.7 days
  40. Science

    Hey! so, I was just wondering if someone could check a few of my answers. 1. during what phase of the moon can a lunar eclipse occur? A. New moon B. First Quarter C. Waxing gibbous D. Full moon* 2. Which of the following is the smallest possible amount of
  41. Math

    1. In the 30 day month of April, for every three days it rained, there were two days it did not rain. The number of days in April on which it rained was how much greater than the number of days on which it did not rain? 2. Each terms of a certain sequence
  42. math

    24 men works for 14 days, 2 days after they started working, 4 more men joined them and after 2 more days, 6 men left. How many more days will they now take to complete the remaining work?
  43. Statistics

    According to a study by the Centers for Disease Control, the national mean hospital stay after childbirth is 2.1 days. Reviewing records at her own hospital, a hospital administrator calculates that the mean hospital stay for a random sample of 81 women
  44. English

    1. He read the book in 5 days. 2. He read the book after 5 days. 3. He read the book within 5 days ~~~~~~~~~~~~~~~~ What does #1 mean,#2 or #3? Does 1 mean it took 5 days for him to read the book? Or does it mean it took 1 day, 2 days, 3 days, 4 days,or 5
  45. math

    On the first two days of Mark's vacation, the weather forecaster reports a 25% chance of rain. On the third day of his vacation, Mark is faced with a 50% chance of rain. What is the probability that Mark will have three straight days of rain?
  46. math

    2 cars need 8days to remove sand. Additional car joined the work from day 4 to to reduce the time. when will they remove all the sand. -6 days -6 1/3 days -6 1/4 days -7 1/3 days please show steps Thanks in advance.
  47. algebra

    A rare bacterial culture is being grown in a lab. As the days progress, the cells multiply and grow. After 1 day, there is only 1 cell. After 2 days, there are 9 cells. After 3 days, there are 20 cells. After 4 days, there are 34 cells. Which recursive
  48. MATHS HELP URGENT(TIME AND WORK)

    A can do a piece of work in 12 days whereas B can destroy the work in 3 days. A does the work for 10 days and then B destroys the work up to 2 days. In how many days will the work be finished?
  49. math

    john calls his dad every 3 days. Katie calls every 4 days. Jamie calls every 6 days. once in every ________ days, all three will call on the same day.
  50. 3rd grade math

    erins summer vacation lasted 100 days. she kept track of the number of rainy days. it rained on 30 days. write a fraction and an equivalent fraction to show what part of all the days it rained.
  51. math

    A can finish a work in 24 days , B in 9 days and C in 12 days. B and C start the work but are forced to leave after 3 days.The remaining work was done by A in ? any idea please i used work rate concept but i did not reach to the answer
  52. science

    A Geiger counter is used to measure the activity of a sample of iodine-131. Based on the data, what is the half-life of iodine-131? A. 16 days B. 8 days C. 4 days D. 12 days
  53. math

    A can do a piece of work in 12 days whereas B can destroy the work in 3 days. A does the work for 10 days and then B destroys the work up to 2 days. In how many days will the work be finished? (explaination please)
  54. stat

    the time between unplanned shutdowns of a power plant has an exponential distribution with a mean of 20 days. Find the probability that the time between two unplanned shutdow is a) less than 14 days B) more than 21 days c) less than 7 days
  55. math

    A and B can do a piece of work in 12 days. They started to work together but A left after a few days. If B alone worked for 20 days, the whole work was finished in 24 days. How long would A take to complete the work??? question is really confusing :/
  56. statistics

    in a beach side suburb it rains on 20% of days and is windy on 30% of days. if rain and wind are independent, on any particular day find the probability that: (a) it rains and is windy (b) it does not rain and is not windy (c) it rains or it windy (d) it
  57. Mathematics

    A rare bacterial culture is being grown in a lab. As time passes, the cells multiply in a specific pattern.After 1 day, there is only 1 cell.After 2 days, there are 8 cells.After 3 days, there are 18 cells.After 4 days, there are 31 cells.How many cells
  58. English

    The fire-fighters stand and watch for the first time in days. --------------- What is the meaning of 'in days'? what other expressions can use instead of 'in days'? Thank you.
  59. math

    you are going on a holiday for 10 days. what date and month will u come back? 7 days in the month of november since nov has 30 days and 3 days of december. so the answer is 3rd december
  60. data management

    The stay at a hotel on Spring Break is normally distributed with a mean of 7 days and a standard deviation of 2 days. If 8000 people visited this hotel on Spring Break... a) If a visitor stays 6 days what is the corresponding z-score? b) How many visitors
  61. statistics 2

    In Hamilton County, Ohio the mean number of days needed to sell a home is 86 days (Cincinnati Multiple Listing Service, April, 2012). Data for the sale of 40 homes in a nearby county showed a sample mean of 80 days with a sample standard deviation of 20
  62. statistics 2

    In Hamilton County, Ohio the mean number of days needed to sell a home is 86 days (Cincinnati Multiple Listing Service, April, 2012). Data for the sale of 40 homes in a nearby county showed a sample mean of 80 days with a sample standard deviation of 20
  63. Statistics 2

    In Hamilton County, Ohio the mean number of days needed to sell a home is 86 days (Cincinnati Multiple Listing Service, April, 2012). Data for the sale of 40 homes in a nearby county showed a sample mean of 80 days with a sample standard deviation of 20
  64. statistics 2

    In Hamilton County, Ohio the mean number of days needed to sell a home is 86 days (Cincinnati Multiple Listing Service, April, 2012). Data for the sale of 40 homes in a nearby county showed a sample mean of 80 days with a sample standard deviation of 20
  65. Math

    Matthew goes swimming every 6 days and hiking every 8 days.how many days will pass before he does both activities on the same day?
  66. Math

    Matthew goes swimming every 6 days and hiking every 8 days.how many days will pass before he does both activities on the same day?
  67. English

    1. He read the book in 5 days. 2. He read the book after 5 days. 3. He read the book within 5 days. -------------------- In a dictionary, I found that 'in' is used as 'within' in American English. Then it's confusing. Does #1 mean #3 in American English? I
  68. statistics

    the manager of a football team works for 310 days per year. of this he spends 42 days looking at new player he might buy. what percentage of his working days is this?
  69. Statistics

    The amt of time cold sufferes will experience symptoms is normally distributed wiht a mean of 7.5 days and a standard deviation of 1.2 days what proportion of sufferers will experience in LESS THAN 4 days , also what proportion will experience sympotms for
  70. Business Stats

    The mean number of travel days per year for salespeople employed by hardware distributors needs to be estimated with a 0.80 degree of confidence. For a small pilot study the mean was 176 days and the standard deviation was 12 days. If the population mean
  71. Business Calculation

    Hello! I was not sure how to put the subject as, because the question is a calculation. However, it is not math. I just need a little help understanding the question, as I think I'm correct, but I'm not 100% sure. Any help is appreciated, thanks! Question:
  72. English

    Posted by rfvv on Wednesday, April 12, 2017 at 9:20pm. 1. He read the book in 5 days. 2. He read the book after 5 days. 3. He read the book within 5 days. -------------------- In a dictionary, I found that 'in' is used as 'within' in American English. Then
  73. Math 8 - HELP!!!!!!!

    If there was 180 days of school and you have Health on A days and Gym on B days. How many days will you have health? please help!
  74. Math

    In the state of Campana, during the Fall season, it rains 75% of the time and it is sunny 25% of the time (these figures are based on historical data). The local weather service every day announces either “Fair” or “Bad”. In the past, 75% of all
  75. Math (probability) please help

    In the state of Campana, during the Fall season, it rains 75% of the time and it is sunny 25% of the time (these figures are based on historical data). The local weather service every day announces either “Fair” or “Bad”. In the past, 75% of all
  76. math

    A can do a piece of work in 12 days whereas B can destroy the work in 3 days. A does the work for 10 days and then B destroys the work up to 2 days. In how many days will the work be finished?
  77. Physics 30

    The activity of a sample of a radioactive isotope is 1800Bq. If this isotope has a half-life of 16 days, what is the activity after 16 days?, 24 days?, and 60 days?
  78. Math

    the average employee in the united states works for about 248 days per year and receives abt 13 days of paid vacation. write the number of vacation days as a percent of the total number of days worked. round to the nearest 100th's of a percent.
  79. math

    A, b, c can complete a work separately in 24, 36, and 48 days respectively. They started working together but C left after 4 days of start and A left 3 days before the completion of the work. In how many days will the work be completed ?
  80. math

    The population mean length of a hospital stay for surgery is 5.5 days and the standard deviation is 1.9 days. What percentage of patients are hospitalized for 3.9 days or less? I've read the book and looked at the explanation that it gives and it's not
  81. Math

    The earth takes 365 1/4 days to go around the sun. Mercury takes 3 days less than 1/4 of this time. How many days does Mercury take to go around the sun? I believe I would have to find 1/4 of the 365 1/4 days then take 3 days out. I was given this do as
  82. science

    How do I predict how long will it take for lava to reach the town, which is 10km from the lava vent, if I know that after 2 days lava was 5 km far from the vent. Thank you Lava traveled 5 km in 2 days. How long will it take for lava to travel 10 km? But
  83. arithmetic

    One chicken lays an egg every 2 days, another every 3 days and a third chicken lays an egg every 5 days. They all lay an egg today. How many days in the next 101 days will EXACTLY 2 chickens be laying an egg?
  84. algebra

    The Kwon family has a rainwater catchment system they use to water their garden. After 3 days without rain, the depth of water in the tank is 63 inches. After 5 days, the depth is 57 inches. What will the depth of water in the tank be after 17 days?
  85. Find the pattern

    Our trip lasted for 12 days we arrived Sunday July 1 and left on Thursday July 12th where we stayed everyday something went wrong the electricity went out the water was shut off sliding patio wouldn't close the gas oven didn't work, and it rained. Out of
  86. math

    George vacuums the rugs every 18 days, mows the grass every 9 days, and pays the bills every 15 days. Today he did all three. How long will it be before he has another day like today?
  87. Mathematics

    George vacuums the rugs every 21 days, mows the grass every 12 days, and pays the bills every 15 days. Today he did all three. How long will it be before he has another day like today?
  88. math

    Jack practices his trunmpet every 3 days. he goes for a run every four days. if he did both today in how many more days will he practice his trumpet and go for a run on the same day. show your work and explain.
  89. Stat

    The lengths of pregnancies in a small rural village are Normally distributed with a mean of 268 days and a standard deviation of 12 days. What percentage of pregnancies last beyond 290 days?
  90. math

    Mom has 2 apples and 3 bananas. Every morning for 5 days she is going to give her son an apple or a banana. What is the probability that the boy will get a banana at least two days in a row during these five days?
  91. Statistics

    The mean length of the first 20 space shuttle flights was about 7 days with a standard deviation of about 2 days. Using Chebychev's theorem, at least how many of the flights lasted between 3 and 11 days.
  92. Math

    Okay i stuck on a problem can anyone help? There are 14 people total.7 are girls a day.Everyone has to work for 7 days also everyone has to have 2 days off.So how many days does a girl work a week?
  93. Math

    If there is 31-days in Janurary, and the first day begin on Thursday. How do I determine four weeks and seven days. Do I count the first three days as week one. Followed with the remaining three weeks.
  94. math

    at a mountain village in new guinea it rains on average 6 days a week. determine the probability that it rains on 1. any one day 2. two successive days 3. three sucessive days. what is the sample space/
  95. math

    at a mountain village in new guinea it rains on average 6 days a week. determine the probability that it rains on 1. any one day 2. two successive days 3. three sucessive days. what is the sample space/
  96. math

    help: Two travelers start simultaneously in two cities A and B, and go to meet each other. The part of A walk 1 km on the first day , the second day 2 km , 3 km on the third day , and so on. The part of B walk 20 miles the first day, the second day 18 km ,
  97. math

    A and B together can make a wall in 60 days. A has worked for 12 days, B finishes the remaining work in 36days. How many days will B take to finish the whole work alone?
  98. statistics

    The lengths of pregnancies are normally distributed with a mean of 268 days and a standard deviation of 15 days. Out of 50 pregnancies, how many would you expect to last less than 250 days?
  99. Chemistry

    a) 45.02% of the sample remains after 85 days. Consider how you can use the percent of Ir-192 remaining and the number of days to calculate the mass remaining after 85 days.
  100. science

    a radioisotope, Iodine-131, has a half life of 8.1 days. explain what this means. draw a particle diagram for a sample 12 particles of I-131 initially after 8.1 days and after16.2 days.