1. Math

    Having a lot of trouble with this one: Q) Tidal volume is the volume of air displaced in the lungs between inhalation and exhalation (the amount of air in a breath). The residual volume is given by the remaining in the lungs even after the deepest

    asked by Anonymous on October 7, 2014
  2. college algebra

    Suppose that the number of new homes built, H, in a city over a period of time, t, is graphed on a rectangular coordinate system where time is on the horizontal axis. Suppose that the number of homes built can be modeled by an exponential function, H= p *

    asked by hilda on April 21, 2010
  3. Math

    I already posted this, but wanted to say that I have the answers and it is 1.68 is less than or equal to x is less than or equal to 9.10 Cone Problem Beginning with a circular piece of paper with a 4- inch radius, as shown in (a), cut out a sector with an

    asked by Taylor on January 3, 2011
  4. Algebra

    The Community Recreation Center is developing plans for a new sports facility. Community members can submit suggestions for the new facility, along with basic scale drawings of their ideas. Elena wants to include a new 15- by 30-meter basketball court in

    asked by Jay on April 7, 2017
  5. Geometry

    Please Help Me! Find the area of this polygon rround to the nearest tenth. The polygon is a hexagon with six sides, and all they give is the apothem which is 6 inches long, what is the area? I know the formula is A=1/2ap But can anyone help!

    asked by Geomtery on February 21, 2012
  6. algebra 2 Equations and Inequalities

    In 90% of the last 30 years, the rainfall at shell beach has varied no more than 6.5 of its mean value of 24 inches. Write and solve an absolute value inequality to describe the rainfall in the other 10% of the past 30 years. how do I do this problem and

    asked by aj on September 17, 2007
  7. Business Calcules

    find a rectangular contains at least 231 cubic inches.the height of the box must be exactly 1/4th of the width of the box. the box is closed on all 6 sides. the surface area of the box minimized.?

    asked by jasmine on March 23, 2014
  8. Alg 1

    A box shaped like a rectangular prism has a height of 17 in. and a volume of 2720 in^3. The length is 4 inches greater than twice the width. What is the width of the box? Please solve and explain what I need to do. The choices are: -10 8 20 40

    asked by Jane on April 14, 2013
  9. calculus

    The radius of a right circular cylinder is given by sqr( t + 6) and its height is 1/6 sqr(t) , where t is time in seconds and the dimensions are in inches. Find the rate of change of the volume with respect to time.

    asked by francisco on February 23, 2016
  10. Math

    The design for a new cone-shaped closed container is shown below. What is the surface area of this container, in square inches? On a picture of a cone with a slant height of 6 in. and the diameter of 4 in.?

    asked by Osarhemen Igbinosun on March 1, 2019
  11. math

    If we say that rare events are those events that happen with a probability of less than .05, then how many observations of men taller than 71 inches tall would you have to observe when randomly sampling before concluding that you had a rare sample? mean =

    asked by Anonymous on April 14, 2015
  12. math

    An isosceles right triangle has legs of equal length. If the hypotenuse is 22 inches long, find the length of each leg. Please help me on this problem so bad!!! I NEED AN ANSWER TO THIS PROBLEM IMMEDIATELY!!!! :(

    asked by Andrea on November 16, 2018
  13. Algebra 2

    The dimensions in inches of a shipping box can be expressed as width x, length x + 1, and height x - 4. The volume is 84 ft^3. Find the dimensions of the box in feet. 1, 1, 4 2, 2, 21 2, 6, 7 3, 4, 7 Please help? If somebody can help put this into an

    asked by Fading on January 7, 2017
  14. math

    Devon’s bike has wheels that are 27 inches in diameter. After the front wheel picks up a tack, Devon rolls another 100 feet and stops. How far above the ground is the tack?

    asked by johny g12 on April 12, 2010
  15. math please help

    Anneke's science class measured 10 inches of rainfall during the month of May what was the average rainfall per day?(Round your answer to the nearest hundredth.) Please answer and explain.

    asked by Anonymous on March 25, 2013
  16. math

    Harriet needs to ship a small vase. the box she will use has a volume of 216 cubic inches. if the side lengths are all the same, what is the length of each side of the box? help me plox i need this ASAP

    asked by recon sniper on November 4, 2013
  17. algebra

    Harriet needs to ship a small vase. The box she will use has a volume of 216 cubic inches. If the side lengths are all the same, what is the length of each side of the box? (1 point) please help me figure this out

    asked by Deborah on October 26, 2012
  18. Math

    Devon’s bike has wheels that are 27 inches in diameter. After the front wheel picks up a tack, Devon rolls another 100 feet and stops. How far above the ground is the tack?

    asked by Johny G12 on April 11, 2010
  19. math

    the cost of painting the circular traffic sign shown below is $3.50 per square foot.how much,to the nearest dollar,will it cost to paint the sign if its diameter measures 36 inches?

    asked by dev on May 13, 2015
  20. math

    you have a rectangular piece of cardboard 40X48 inches and need to create an open box with the maximum volume(ignore flaps). what would the dimensions of the box need to be to maximize the volume?

    asked by Carlee on December 16, 2012
  21. Math

    A gutter at the edge of a roof drops 2 inches for every 30 feet of length. To the nearest tenth of a degree, what is the measure of the angle that the gutter makes with the roof? I got an answer before, but where does 12 come from?

    asked by Anonymous on April 29, 2015
  22. math

    Anneke's science class measured 10 inches of rainfall during the month of May what was the average rainfall per day?(Round your answer to the nearest hundredth.) Please answer and explain.

    asked by Anonymous on March 25, 2013
  23. Algebra 2

    I've been stuck on this problem forever. Can someone please explain to me what to do from here? The design of a digital box camera maximizes the volume while keeping the sum of the dimensions at 6 inches. If the length must be 1.5 times the height, what

    asked by Tricia on January 15, 2015
  24. Int. Macro

    Can some just point into the right direction on how to solve this? 1. Suppose you live four periods and earn income of $30,000, $60,000, and $90,000 in the first three periods, and then retire in the fourth period. Assume the interest rate is 0. a. Suppose

    asked by robson on October 26, 2012
  25. CALCULUS HELP NEEDED ASAP!

    Having a lot of trouble with this one: Q) Tidal volume is the volume of air displaced in the lungs between inhalation and exhalation (the amount of air in a breath). The residual volume is given by the remaining in the lungs even after the deepest

    asked by Anonymous on October 8, 2014
  26. stats

    A random sample of 12 joggers was asked to keep track and report the number of miles they ran last week the responses are: 5.5 7.2 1.6 22.0 8.7 2.8 5.3 3.4 12.5 18.6 8.3 6.6 a) Compare the three statistics that measure central location. b) Briefly describe

    asked by qui on January 31, 2011
  27. stats

    A random sample of 12 joggers was asked to keep track and report the number of miles they ran last week the responses are: 5.5 7.2 1.6 22.0 8.7 2.8 5.3 3.4 12.5 18.6 8.3 6.6 a) Compare the three statistics that measure central location. b) Briefly describe

    asked by qui on January 31, 2011
  28. stats

    A random sample of 12 joggers was asked to keep track and report the number of miles they ran last week the responses are: 5.5 7.2 1.6 22.0 8.7 2.8 5.3 3.4 12.5 18.6 8.3 6.6 a) Compare the three statistics that measure central location. b) Briefly describe

    asked by qui on January 31, 2011
  29. math

    the diagram below represents a drinking glass of diameter 10cm. it is partially filled to a height of hcm with apple juice. (a) using 3.14 give an expression in term of h for the volume of juice. the actual volume of the juice is 0.471 litres. (b)

    asked by tia on October 19, 2010
  30. to writeacher

    I reread the article and pyne doesn't state any identification with any particular oriental culture and about what i know muslims and arabs do you mean by example that the arabs are consider ethnics and muslims are more religious group. I really don't know

    asked by minemine on November 2, 2006
  31. math

    if hallie ran 1.2 miles on the school track and that is 5/8nof the distance of the track how long is the track?

    asked by Hallie on April 21, 2014
  32. math

    a truck driver traveled for 3 hours at an average speed of 65 miles per hours. how far did he travel in 8 hours?

    asked by darrius on January 17, 2013
  33. Algebra 8th

    Find the greatest possible error for the given measurement if it is to the nearest 10 miles. 150 mi a. 5 mi b. 75 mi c. 0.5 mi d. 7.5 mi Find the greatest possible error for each measurement. 18.9 m a. 0.01 m b. 0.5 m c. 9.45 m d. 0.05 m Find the greatest

    asked by purplebananas on November 6, 2013
  34. st

    7) (8 pts) Construct a histogram and a frequency polygon for the following frequency distribution Miles Number of Commuters Class Frequency 0 - 24 4 25 - 49 10 50 - 74 11 75 - 99 5 100 –124 1

    asked by Rose on December 14, 2007
  35. math

    At the Pentagon there are921 feet along each outer side facade and 17.5 miles of corridorS inside it. All sides of the Pentagon are equal. What is the perimeter of the Pentagon

    asked by sam on December 16, 2013
  36. intermediate algebra

    The danville Express travels 280 miles at a certain speed.If te speed were increased by 5 mph the trip could have been made in 1 hr less time.What was the actual speed?

    asked by Lueshelle on April 24, 2012
  37. Math

    In the formula RT equals D, are is right T is time and E is distance what is the rate for a runner who completes 7.5 miles in 1.5 hours (10 points) A(11.25mph B(9.0mph C(6.0mph D(5.0mph

    asked by Jirehn on October 19, 2015
  38. Lang ARTS

    Stretching for 210 miles, the Thames is in England. (1 point) 1phrase 2gerund phrase 3participial phrase 4appositive phrase 5 preportional

    asked by Gracie on December 17, 2012
  39. Calculus

    Salary Contracy - A union contract guarantees a 10% salary increase yearly for 3 years. For a current salary of $28.00, the salary S (in thousands of dollars) for the next 3 years is given by... S(t)= 28.00, 0

    asked by CeeCee on September 5, 2011
  40. Math

    Yep, another math question! The slope of a line passing through H ( -2, 5) is -3/4, which ordered pair represents a point on the line? A: (6, -1) B:(2, 8) C: (-5, 1) D:(1, 1) No graph was with the question btw. I tried making a coordinate plane myself and

    asked by Lyla on May 6, 2018
  41. SCIENCE

    The organization of a cell could be compared to a small city. All of the organelles inside of the cell have a specific purpose that helps the cell to function properly. Which BEST represents the function of the cell wall? A) Policeman B) Sanitation worker

    asked by PLZ HELP on September 7, 2017
  42. math

    1.39 1.61 1.6 1.53 1.62 1.61 1.64 1.59 1.62 1.51 1.52 1.6 the mean height of the students is 1.57 meters. what does it imply? a.) there are more students whose heights are below 1.57 meters b.) the average height of the students is 1.57 meters. c.) most of

    asked by chevlios on March 3, 2015
  43. homework

    every yellow marble is expensive.one -half the orange marbles are expensive.one -half of all expensive marbles are yellow. there are 40 yellow marbles and 25 expensive marbles that are niether yellow nor orange. how many orange marbles are there?

    asked by phil on October 30, 2011
  44. math

    1. You have recently found a location for your bakery and have begun implementing the first phases of your business plan. Your budget consists of an $80,000 loan from your family and a $38,250 small business loan. These loans must be repaid in full within

    asked by Jilly bean on October 14, 2009
  45. english please help

    1.Which of the words means the same as “confidence” as used in the sentences She told me in confidence what her plans were, and I refused to divulge them to anyone else. A. Secret b. Reliable C. Assurance d. Certainty 2. The gist of the saying went

    asked by wedi on June 7, 2015
  46. english please help

    1.Which of the words means the same as “confidence” as used in the sentences She told me in confidence what her plans were, and I refused to divulge them to anyone else. A. Secret b. Reliable C. Assurance d. Certainty 2. The gist of the saying went

    asked by wedi on June 7, 2015
  47. project mgmt

    A project has an expected duration of 34 weeks with a critical path variance of 6. Suppose the project network is given and the critical path is identified on the network. Suppose the normal time, crash time, and the associated cost for each activity is

    asked by kathy on April 22, 2012
  48. Math

    The transportation departments is resurfacing 12.75 miles of roadways in Navarro County. The crew completes work on a 1/8 mile section of roadway each hour. How many hours will it take to complete the resurfacing project?

    asked by Lei on October 26, 2016
  49. Pre-Algebra

    Grete Waitz won the New York marathon nine times. The rate at which she ran during her last victory in 1988 was 26 miles in 148 minutes. To the nearest hundredth, what was the unit rate for her last race?

    asked by Anonymous on December 13, 2012
  50. Geometry

    an airplane flying at an altitude of 10,000ft or 1.89 miles. The airport at which it is schooled to land is 50 mi away. Find the average angle at which the airplane must descent for landing round your answer to the nearest degree.

    asked by Anonymous on December 12, 2014
  51. English- Poetry

    Please help... In this unit, you read William Wordsworth's poems "Lines Composed a few miles above tintern abbey," "The World is Too MUch with Us," and "I Wandered Lonely as a Cloud." How are these poems representative of the Romantic Period?

    asked by Kierra on February 17, 2014
  52. another speed

    At 10:00 AM Two planes leave an airport. If the northbound plane flies 280 mph and the sound bound at 320 mph, at what time will they be 1000 miles apart? I need help with explanations the questions keep changing :(

    asked by Rells on January 16, 2015
  53. poetry

    In this unit, you read William Wordsworth’s poems “Lines Composed a Few Miles Above Tintern Abbey,” “The World is Too Much with Us,” and “I Wandered Lonely as a Cloud.” How are these poems representative of the Romantic Period?

    asked by Whitney on February 26, 2013
  54. social studies

    Despite temperatures of more than 5,000º F, Earth's inner core is solid because of _____________________. a layer of ice just above it. the fact that Earth rotates so quickly. a thickness of over 1,000 miles. great pressure from the layers around it.

    asked by Sammy, !!!Please Answer!! on December 4, 2012
  55. Algebra

    A person riding a Ferris wheel with a diameter of 64 feet travels once around the wheel in 25 seconds. What is the average speed of the rider in miles per hour? (Round your answer to one decimal place.)

    asked by Vicki on March 27, 2015
  56. calculus

    2. A spin balancer rotates the wheel of the car at 480 revolutions per min. if the diameter of the wheel is 26 in what road speed is being tested in the miles per hour? Round to the nearest tenth

    asked by Nolan on April 30, 2012
  57. algebra 1

    fred begins walking at three mi/h. john leaves his house at the same time and walks towards freds house at a rate of 2 mi/h. how long will it be befor thhey meet the distance between the two houses is 4 miles?

    asked by nathan on March 25, 2008
  58. Physics-help please!

    You decide to use your body as a Carnot heat engine. The operating gas is in a tube with one end in your mouth (where the temperature is 37.0 C) and the other end at the surface of your skin, at 30.0 C. What is the maximum efficiency of such a heat engine?

    asked by Christina on December 15, 2007
  59. Math

    The pH of a solution ranges from 0 to 14. An acid has a pH less than 7. Pure water is neutral and has a pH of 7. The pH of a solution is given by pH = -logx where x represents the concentration of the hydrogen ions in the solution in moles per liter. Find

    asked by Liz on May 23, 2016
  60. math

    For her vacation Mrs. Andrews bought $300 worth of traveler's checks in $10 and $20 denominations. If she has 22 travelers checks in all, how many of each denomination does she have? Let x represent the number of $10 traveler's checks she has. Which

    asked by Nicole on August 20, 2012
  61. Math

    Joshua earned $60 for working h hours. Which expression represents how much he earned in 1 hour? A)60h B)60 + h C)h/ 60 D) 60/h *** If y = x - 3, what happens to y when x increases by 5? A) y increases by 2 B) y decreases by 2 C) y decreases by 5 D) y also

    asked by Haley on May 17, 2017
  62. another problem for checking - algebra

    P dollars is invested at annual interest rate r for 1 year. If the interest is compounded semiannually, then the polynomial P(q + r/2)^2 represents the value of the investment after 1 year. Rewrite w/o parenthesis and eval if P= $200 and r = 10% P(1 +

    asked by Nik on September 17, 2007
  63. math

    The fraction 5Y3X/2Y8, in which X and Y stand for unknown digits, represents a division which results in a quotient that is whole number. Which of the following is (are) true? not just and answer please I. X may equal 2. II. X may equal 6 or 0. III. X may

    asked by vincent on August 4, 2013
  64. intro to computers

    which option below represents a task that can be conducted in Excel through sorting? A. showing all cells that have a number that ends with a 5 B. showing all cells that have nothing in them. C. showing all cells that have the word "widget" in them. D.

    asked by Anonymous on November 3, 2015
  65. Pictures (URGENT)

    I need to draw pictures that represents the weather, for a poster assignment. But I'm having trouble with hot and sunny. what 2 different pictures can i draw to represent them? Also, cold, snowing, and windy. I need 3 different pictures to represent them

    asked by John on September 10, 2009
  66. algebra

    The height above ground of a rock dropped from a bridge can be found using the formula h(t) = 9.8tsquared + 100, where t represents the number of seconds. What is the height of the rock after 3 seconds? How long will it take the rock to hit the bottom?

    asked by Brynn on September 23, 2012
  67. Math

    The pH of a solution ranges from 0 to 14. An acid has a pH less than 7. Pure water is neutral and has a pH of 7. The pH of a solution is given by pH = -logx where x represents the concentration of the hydrogen ions in the solution in moles per liter. Find

    asked by lili on January 6, 2017
  68. math

    You are at the music store to buy some CDs. You have $45 to spend and the store sells CDs for 12.99 each. Write an inequality that represents the number, n, of CDs that you can buy without spending more money than you have. help greatly appreciated thk

    asked by emily on March 27, 2013
  69. math

    Five friends went to a baseball game. Three of the friends each bought tickets for x dollars and a soda for $6.00. The other two friends each bought only tickets. Write and simplify an expression that represents the amount of money spent.

    asked by Carabeth on May 14, 2013
  70. math

    Dylan loved pencils. He had a whole box full of pencils in different colors and designs. One-seveth of them were yellow, one-sixth of them were blue, and the rest of the pencils had designs on them. What fraction represents the pencils with designs on

    asked by Lis on February 1, 2012
  71. algebra

    A scale used for a model car is one inch for every 2.5 feet. If the car is originally 7.25 feet long, how long will the model car be?

    asked by Anonymous on September 22, 2011
  72. physics

    A body travels along a circular path of radius 70 m.After travelling half a revolution in 20 s find the ; 1.average velocity 2.average speed

    asked by Saurabh on June 21, 2011
  73. Physics

    A certian radioactive isotope has a half-life of 1 hour. If you start with 1 gram of the material at noon, how much of the original isotope will the sample contain at 3 pm? At 6 pm? At 10 pm?

    asked by Judy on November 17, 2007
  74. algebra

    The half-life of plutonium-234 is 9 hours. If 40 milligrams is present now, how much will be present in 4 days? (Round your answer to three decimal places.)

    asked by meghan on November 20, 2011
  75. Math

    Monique runs one fourth mondays one half on Tuesday three fourth on wednesday and one mile on Thursday how much does she increase her running time?

    asked by Patricia on April 3, 2012
  76. Inorganic chemistry

    Given the following two half-reactions, determine which overall reaction is spontaneous and calculate its standard cell potential. Cd^2+(aq) + 2e^- ==> Cd(s) E naught = -1.21V Sn^2+ + 2e^- ==Sn(s) E naught = -0.14V

    asked by Steve on April 11, 2009
  77. Physics

    How much is the acceleration of a baseball thrown by a pitcher in a major league baseball game, if the ball goes from 0 to 90 mph in a one-half-second time period?

    asked by Reggie on March 29, 2014
  78. Health

    According to the government’s My Plate program, half of our plate should have? A. Pasta and breads B. Seafood C. Fruits and vegetables D. Protein and desserts a? or c? idk:/

    asked by Sam on August 30, 2012
  79. Chemistry

    The iodine-131 nuclide has a half-life of 8 days. If you originally have 625-g sample, how many grams will you have after 2 months(approximately 64 days)?

    asked by Please help on November 2, 2016
  80. physics

    A 35.9 kg child starting from rest slides down a water slide with a vertical height of 20.3 m. (Neglect friction.)What is the child speed half way down

    asked by mary on October 7, 2014
  81. Pre calc

    Use the half-angle formulas to determine the exact values of the sine, cosine, and tangent of the angle. 67° 30' 7 sin(67° 30')= cos(67° 30')= 4 tan(67° 30')=

    asked by kyle on January 22, 2012
  82. maths

    A man travels for 5 hr 15 min if he covers the first half of the journey at 60 kmph and the rest at 45 kmph. find the total distance travelled by him.

    asked by Balaji on August 2, 2016
  83. Physics

    If the odometer on the car reads 25.0 km at the beginning of a trip and 65.0 km a half hour later, what is the average speed of the car? (Remember significant digits.)

    asked by Isis on June 13, 2013
  84. Math-Trigonometry

    Use the half-angle formulas to find the exact values. Cosine 165 degrees, Sine 157 degrees 30' and tan pi/8

    asked by Neicey on April 22, 2012
  85. Chemistry 212

    The isotope sodium-22 has a half life of 2.60 years. What is the 1st order rate constant in inverse years? I am using the Ln (A/A0) = -Kt formula. Is that correct?

    asked by Valerie on May 5, 2017
  86. math

    Kamisha bought a strawberry pie that was cut into 4 equal peices. She ate half of one peice. What fraction of the whole pie was left?

    asked by Anie on September 21, 2009
  87. Business math

    how long will it take 2,000 to grow to 3,000 if the interest rate used is 6% compounded semi-annually? answer to the nearest half-year. thank you!

    asked by sue on March 11, 2016
  88. music

    i cant figure out what a quarter note,scale,tie,treble clef,fermata,accent,half note,sharp, and a stem look like

    asked by jacob on May 31, 2010
  89. math

    the current population of a threatened animal species is 1 million, but it is declining with a half-life of 20 years. how many animals will be left in 60 years?

    asked by JT on October 17, 2017
  90. Math

    Bren sets the table. He takes a square napkin and folds it in half. He makes a triangle. What two names can you use to describe the triangle?

    asked by Lynne on April 6, 2012
  91. Chemistry

    carbon 14 has a half life of 5715 years. If you start with a 5 gram sample of 14C, what mass is left after 15,000 years?

    asked by Mima on April 24, 2012
  92. Algebra 2

    A radioactive substance decays at a rate of y = ae^-0.1483t, where t in in hours. Find the half-life of the substance. How do I solve this problem if I am only given the constant.

    asked by Sammantha Avants on December 1, 2015
  93. physics

    Help please? Having trouble with this. A race car makes two and half laps around a circular track in 3.0 min. What is the car's average angular speed?

    asked by kayla on November 28, 2017
  94. Social Studies

    What Canadian landform covers about half of the country? A.the Interior Plains B.the Canadian Shield C.the St. Lawrence Lowlands D.the Yukon Territory

    asked by Carli on February 28, 2017
  95. History

    Which of the following region's populations grew the slowest during the second half of the 1900's?) The Midwest The Southwest The Southeast The West Coast my answer is the midwest

    asked by Steve on May 15, 2017
  96. Chemistry

    Calculate the pH during the titration of 10.00 mL of 0.400 M hypochlorous acid with 0.500 M NaOH. The Ka for HOCl is 3.0 x 10-8 M. What is the pH when half the acid has been neutralized? 'I got 7.82 by using the HH formula but its wrong, help.

    asked by JUNDY on March 15, 2015
  97. chem

    balance the reaction using the half reaction method. OsO4 + C2H4 -> Os + CO2 worksheet does not show if it is in a gas and aqueous state.

    asked by bekah on December 14, 2014
  98. Chemistry

    Calculate the pH during the titration of 10.00 mL of 0.400 M hypochlorous acid with 0.500 M NaOH. The Ka for HOCl is 3.0 x 10-8 M. What is the pH when half the acid has been neutralized? 'I got 7.82 by using the HH formula but its wrong, help.

    asked by JUNDY on March 15, 2015
  99. Math

    A fossilized leaf contains 21% of its normal amount of carbon 14. How old is the fossil (to the nearest year)? Use 5600 years as the half-life of carbon 14.

    asked by james on August 3, 2016
  100. algebra

    Samina spent 1/8 of her money to buy books, 1/5 in purchasing clothes and 1/10 on charity. If she still had Rs 15, more than half of her money, find the amount she had originally.

    asked by Abdul Wahab on January 7, 2019