Popular questions and responses by Barb
  1. 4th grade math

    Barb is making a bead necklace. She strings 1 white bead, then 3 blue beads, then 1 white bead, and so on. Write the numbers for the first eight beads that are white. What is the rule for the pattern. Please help me explain this to my 4th grader

    asked on January 14, 2013
  2. Math

    Write a list of steps that are needed to find the measure of ∠B. A line segment ACD is shown with triangle ABC drawn so that AC is the base of the triangle. Angle BAC is labeled with 72 degree sign, and angle BCD is labeled with 113 degree sign.

    asked on February 7, 2018
  3. Algebra

    You plan to build four identical rectangular sheep pens in a row. Each adjacent pair of pens share a fence between them. You have a total of 368 feet of fence to use. Find the dimension of each pen such that you can enclose the maximum area. 5w+8L=368

    asked on March 12, 2016
  4. algebra

    A cup of coffee is heated to 180°F and placed in a room that maintains a temperature of 65°F. The temperature of the coffee after t minutes is given by T(t) = 65 + 115e^−0.042t.(a) Find the temperature, to the nearest degree, of the coffee 10 minutes

    asked on November 17, 2014
  5. Math

    A merchant visited 3 fairs. At the first, he doubled his money and spent $30; at the second he tripled his money and spent $54; at the third, he quadrupled his money and spent $72, and then had $48 left. How much money had he at the start?

    asked on April 3, 2013
  6. scientist

    A techer pushed a 98 newton desk across a floor for a distance of 5 meters she exerted a horizontal force of 20 newtons. how much work was done?

    asked on October 25, 2009
  7. Math

    Show that z/pq = 1/pr + 1/qr, where r = (p + q)/z Finding decmpositions of a fraction into 2 units as indicated on a paprus written in Greek.

    asked on January 31, 2013
  8. Math Please Help

    A pizza box top with a square base is to be made from a rectangular sheet of cardboard by cutting six 1-inch squares from the corners and the middle sections and folding up the sides. If the area of the base is to 144 in^2, what piece of cardboard should

    asked on January 13, 2013
  9. Math

    Two boats leave a dock at the same time. One heads due east at 20 mph, and one heads due south at 15 mph. How far apart are the two boats after 45 minutes have elapsed?

    asked on February 10, 2013
  10. math

    graph the equation by plotting the points: 35-5y=0 i know how to put the solutions on the graph. i am stuck on this equation. i think x=0 but i can not figure for y. please help me and show me the steps to solve this.

    asked on August 19, 2010
  11. calc

    The half-life of polonium is 139 days, but your sample will not be useful to you after 95 % of the radioactive nuclei present on the day the sample arrives has disintegrated. For about how many days after the sample arrives will you be able to use the

    asked on April 10, 2007
  12. Algebra

    Triangles ABC and DEF are similar. Find the area of triangle ABC. Round your answer to the nearest tenth. Triangle ABC has a base of 12m. Triangle DEF has a base of 18m and height of 12m

    asked on May 7, 2014
  13. Science

    If a black coat that is coat dominant over a red coat but is heterozygousfor coat color and breeds with a red cow, what percentage of their offsprings would be black coat

    asked on December 19, 2017
  14. Statistics

    The scores on a math test are normally distributed. if the mean is 72 and the standard deviation is six, what is the range of 98% of the scores?

    asked on July 22, 2019
  15. Chemistry

    A scuba diver 60 ft below the ocean surface inhales 55.0 mL of compressed air from a scuba tank at an initial pressure of 2.60 atm and temperature of 8 ∘C. What is the final pressure of air, in atmo-spheres, in the lungs when the gas expands to 155.0 mL

    asked on March 24, 2016
  16. legal writing 2

    i am suppose to write 2 legal memorandum sally bright v. john bright and john bright v. sally bright child custody case. mother wants to take minor child out of the country.

    asked on May 4, 2013
  17. science

    a 49 newton rockis lifted 2meters in 5 seconds How much work is done? b what power is used?

    asked on October 24, 2009
  18. algebra

    Flying with the wind, a plane traveled 570 miles in 3 hours. Flying against the wind, the plane traveled the same distance in 5 hours. Find the rate of the plane in calm air and the rate of the wind. Rate of plane ______mph Rate of wind ________mph

    asked on December 6, 2014
  19. Math

    One angle of a triangle measures 105degrees and another angle measures 32degrees what is the measurement of the third angle

    asked on April 29, 2015
  20. legal writing 2

    legal writing project 2 sally bright v. john bright

    asked on May 4, 2013
  21. Math--Please help

    Prove that no isosceles right triangle exists whose sides are integers.

    asked on February 2, 2013
  22. algebra

    The height in feet of a projectile with an initial velocity of 32 feet per second and an initial height of 48 feet is a function of time in seconds given by h(t) = −16t2 + 32t + 48. (a) Find the maximum height of the projectile. ft (b) Find the time t

    asked on December 12, 2014
  23. science

    a teacher pushed a 98 newton desk acrosss a floor for a distance of 5 meters she exerted a horizontal force of 20 newton How much work was done?

    asked on October 24, 2009
  24. Algebra

    Find the payment necessary to amortize a 4% loan of $900.00 compounded quarterly , with 11 quarterly payments?

    asked on October 23, 2011
  25. algebra

    The function A(t) = 200e^-0.014t gives the amount of medication, in milligrams, in a patient's bloodstream t minutes after the medication has been injected into the patient's bloodstream. (a) Find the amount of medication, to the nearest milligram, in the

    asked on November 17, 2014
  26. 8th grade

    a student wo weighs 500 newtons climbed the stairs from the first floor to the third floor 15 meters above in 20 seconds much work did she do? B.what was her power

    asked on October 25, 2009
  27. science

    a womans lifts a 300 newton child a distance of 1.5 meters and carries her forward for 6.5meters. how much work does the woman do in lifting the child? much work does the child do?

    asked on October 24, 2009
  28. algebra

    A medical researcher wanted to determine the effect of pH (a measure of alkalinity or acidity, with pure water having a pH of 7) on the growth of a bacteria culture. The table below gives the measurements of different cultures, in thousands of bacteria,

    asked on December 6, 2014
  29. English

    I have an sentence. Beth lost her glasses at the library. I have to replace HER GLASSES with a pronoun Thank you for using the Jiskha Homework Help Forum. You need a direct object pronoun = them.

    asked on February 20, 2007
  30. math

    Determine the intersection X ∩ Y. Express the in interval notation. X = {x } and Y = {x

    asked on February 15, 2019
  31. sci/275-environmental

    What are the pros and cons of using Malathion pesticide????

    asked on January 14, 2010
  32. algebra

    The fuel efficiency for a certain midsize car is given by E(v)= -0.016v^2+1.408v+3.8, where E(v)is the fuel efficiency in miles per gallon for a car traveling v miles per hour. What speed will yield the maximum fuel efficiency? _______mph. What is the

    asked on December 6, 2014
  33. algebra

    Solve the inequality graph solution 8| x+3/4|-1/2, -5/32

    asked on February 25, 2014
  34. finance

    The Landis Corporation had 2008 sales of $100 million. The balance sheet items that vary directly with sales and the profit margin are as follows: Cash . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5% Accounts receivable. . . . . . . .

    asked on August 3, 2009
  35. Math

    One number is 10 less than twice a second number. Find a pair of such numbers so that their product is as small as possible. These two numbers are_ and _. (Use a comma to separate your numbers.) The smallest possible product is_. The number are NOT 5,15 or

    asked on March 12, 2016
  36. Liature

    Identify Parts of Speech in A city must be planned Carefully, or people will not want to live in it.

    asked on September 1, 2016
  37. chemistry

    In the experiment you have added 50.0 mL of Ni(H2O)6 2+ to the calorimeter. To this you add 5.0 mL of ethlylenediamine and measure the change in temperature of the solution as the reaction proceeds. The temperature increases by 3.4 oC. Calculate the

    asked on April 9, 2013
  38. child care management

    One reason early childhood education centers have become increasingly important providers of health education is that A.schools are more sanitary than 70percent of home environments. B. younger, healthier teachers and classroom aides have emereged. c.

    asked on March 10, 2010
  39. math

    the quotient of n and 5 is 4 times n find equation

    asked on January 17, 2013
  40. math

    the water in leroy's and jerod's fish tank has evaporated so it was about 5/8 inch below the leverit should be.they added water and the water level went up about 3/4 inch.did the water level end up above or below where it should be? answer

    asked on March 9, 2012
  41. 7th grade

    49 is 77% of what number?

    asked on October 4, 2010
  42. chem

    make an aqueous solution of 0.176 M copper(II) chloride for an experiment in lab, using a 300 mL volumetric flask. How much solid copper(II) chloride should you add

    asked on November 22, 2015
  43. Math

    What is the word form for 1.555?

    asked on September 15, 2010
  44. Math - Please Help

    The surface area of a right circular cylinder is 1200 cm^2 . If the height of the cylinder is twice its diameter, find the dimensionsof the cylinder. I know th formula for SA is SA = 2pir^2 + 2pirh I know h = 2d. I know r = 1/2 d What is h in relations to

    asked on February 18, 2013
  45. Math

    What is the reciprocal of .26

    asked on October 31, 2012
  46. chenistry

    how many calories are required to melt a 135.0g sample of ice at 0.0 c

    asked on September 5, 2012
  47. algebra

    Lead shielding is used to contain radiation. The percentage of a certain radiation that can penetrate x millimeters of lead shielding is given by I(x) = 100e^−1.5x. What percentage of radiation, to the nearest tenth of a percent, will penetrate a lead

    asked on November 18, 2014
  48. Math

    A pizza box with a square base is to be made rom a rectangular sheet of cardborad by cutting six 1-inch squares from the corners and the middle sections and folding up the sides. If area of the base is to be 144 in^2, what piece of cardboard should be

    asked on January 12, 2013
  49. algebra

    The number of bass in a lake is given by P(t) = 2800/1+6e^-0.05t where t is the number of months that have passed since the lake was stocked with bass. (a) How many bass were in the lake immediately after it was stocked? ? bass (b) How many bass were in

    asked on November 17, 2014
  50. Math - Please Help

    A chunk of oak firewood has a mass of about 2.85 kg and has a volume of 4100 cm^3. Determine the density of oak in g/cm^3.

    asked on February 17, 2013
  51. accounting

    what is the total liabilites and the owners equity in the balance sheet you prepared in exam figure 4? a. $,5,906.54?

    asked on March 29, 2011
  52. Math

    30 flasks--10 full, 10 half-empty, and 10 entirely empty--are to be divided among 3 sons so that flasks and contents should be shared equally. How may this be done?

    asked on April 3, 2013
  53. Math--Please Help

    A traverse with five sides has interior angles with the following measures: 121deg 45 min: 118 deg 25 min; 87 deg 32 min; 98deg 34min, and 113 deg 54 min. Does the traverse close? If not, determne the error in the traverse.

    asked on February 4, 2013
  54. Precalc

    Find the vertex and focus of the parabola. (x^2)-(24y) = 0

    asked on December 3, 2010
  55. math

    can i get step by step for this equation? 3x + 2y =24 what is the y intercept and what is the x intercept? I need the ordered pairs

    asked on August 22, 2010
  56. math

    how do you know when an equation has infinate many solutions and how do you know if an equation has no solutions? The second part of this question I get. If you work an equation and come up with 5=3 this is not a solution. Is that part right? I guess I do

    asked on August 6, 2010
  57. Math

    A carpenter agrees to work under the conditions that he is to be paid $5.50 every day he works, but must pay $6.60 every day he does not work. At the end of 30 days he finds he has paid out as much as he has received. How may days did he work?

    asked on April 3, 2013
  58. english

    Is the word program a v/cv or double constanant?

    asked on September 16, 2010
  59. Math

    Prove: If the hypotenuse and an acute angle of one triangle are congruent respectively to the hypotenuse and an acute angle of another right triangle, then the two triangles are congruent.

    asked on March 26, 2013
  60. Math-Please Help

    While rummaging, Bernard found a figurine that he believed to be made out of silver. To test his guess, he looked up the density of silver and found it to be 10.5g/cm^3. The figure had a mass of 149 g. To determine its volume, he dropped it into a

    asked on February 18, 2013
  61. science

    • Explain the flow of energy through the ecosystem using specific plant and animal examples. Correctly use the following terms in your example and explanation; primary producer, primary consumer, secondary consumer, tertiary consumer, trophic level. •

    asked on January 19, 2010
  62. Chemistry

    How many moles of Carbon dioxide are produced from the decompostion of 1.45 grams of Aluminum Carbonate?

    asked on February 24, 2008
  63. trig

    angles of elevation to an airplane are measured from the top and the base of a building that is 40 m tall. The angle from the top of the building is 31°, and the angle from the base of the building is 40°. Find the altitude of the airplane. (Round your

    asked on November 28, 2012
  64. Chemistry

    Acetic acid has a pK of 4.8. How many mL of 0.1M acetic acid and 0.1M of sodium acetate are required to prepare 1 liter of 0.1M buffer solution having a pH of 5.8?

    asked on September 14, 2011
  65. math

    please solve: 8y - 12 < 7y - 7 { y y < ? there is supposed to be a straight line between the y and y

    asked on August 22, 2010
  66. chemistry

    How many grams of potassium sulfide are produced from the reaction of 1.23 moles of potassium with sulfur?

    asked on February 24, 2008
  67. algebra

    The monthly income I, in dollars, from a new product is given by I(t) = 81000 − 45000e^-0.005t where t is the time, in months, since the product was first put on the market. (Round your answers to the nearest dollar amount.) (a) What was the monthly

    asked on November 17, 2014
  68. calculus

    find an antiderivative F(x) of f(x)=11x-sqrt(x)

    asked on December 2, 2011
  69. Social Studies

    How did the French and Indian War change the British relationship with its American Colonies?

    asked on May 29, 2009
  70. Engish

    I have a book on finding what you need for critical thinking as for as questions and answers please if I can help let me know. Critical thinking happens to be one of my courses.

    asked on May 15, 2008
  71. Earth Science

    What commonly used metal is extracted from hematite? There are a number or iron ores. Hematite is one of them.

    asked on October 3, 2006
  72. chemistry

    what happens to water at 100 degrees celsius as pressure is increased fro 0.8 atm to 1.2 atm?

    asked on July 19, 2016
  73. geometry

    if a scale factor of four is used, the points in the image will be eight times as far from the origin as at he pre-image points true or false

    asked on June 28, 2013
  74. Math

    The area of a rectangle is 12 and the width is 3/4 the length. What are the dimensions?

    asked on January 31, 2013
  75. PreCalc

    6.Given -2i is a root, determine all other roots of x^4-10x^3+42x^2-88x+80. A. x= +/- 4, 2i B.x= -2, +/- 4i C.x= -4, +/- 2 D.x= -4, 2i E.x= +/- 4, 2 Please help, I do not understand where to begin.

    asked on September 22, 2010
  76. calc

    2- The earth’s atmospheric pressure p is often modeled by assuming that the rate dpdhat Which p changes with the altitude above sea level is proportional to hp. Suppose that the pressure at sea level is 1013 millibars (about 14.7 pounds per square inch)

    asked on April 10, 2007
  77. Math

    One number is 10 less than twice a second number.Find a pair of such numbers so that their product is as small as possible. x-10 2x 2x(x-10) 2x^2-20x -(-20/2(2))=5 2(5)^2-20(5) 50-100=-50 I think I am really lost

    asked on March 11, 2016
  78. Math--Please Help

    A pizza box with a square base is to be made from a rectangular sheet of cardboard by cutting six 1-inch squares from the corners and the middle sections folding up the sides. If the area of the base is to be 144 in^2, what size piece of cardboard should

    asked on January 13, 2013

    I only have 1 hour to get this question answered. Thank you in advance. I need a quadratic equation in the variable x given the solutions: -7 sqrt 7, and 7 sqrt 7 This needs to be in the standard form of ax^2+bx+c=0. Can someone please help me with

    asked on November 12, 2010
  80. math

    write an equation of the line containing the given point and parallel to the given line; use y=mx+b form; (5,8) x+4y=7 i keep getting this wrong. Can someone show me how to work this? Thank you so much

    asked on September 3, 2010
  81. MAT115

    Identify the base in the following application: The sales tax rate is 8%. If you pay a tax of $2.50 on an item, what is the selling price. I don't know what the base is or how to solve the problem.

    asked on July 22, 2010
  82. science

    4. Assignment: Photosynthesis and Cellular Respiration Powerpoint Energy acquisition is essential for all life. Whether the organism is classified as plant or animal, single-celled or multicellular, the exchange of energy and the formation of products

    asked on June 12, 2010
  83. algebra

    The function p(d)=1+d/33, gives the pressure, in atmospheres (atm), at a depth d in the sea (d is in feet). Note that p(0)=1 atm, p(32)=2 an so on. Find the pressure at 200 feet. Type an integer or simplified fraction.

    asked on October 12, 2009
  84. Algebra

    One number is 10 less than twice a second number. Find a pair of such numbers so that their product is as small as possible. I came up with 15 and 5 and those are incorrect

    asked on March 11, 2016
  85. Math--Please Help

    A pizza bx with a square base is to be made from a rectangular sheet of cardboard by cutting six 1-inch square from the corners and the middle sections and folding up the sides. If the area of the base is to be 144 in^2, what size piece of cardboard should

    asked on January 13, 2013
  86. pre algebra

    how do u know the answers shown on the computer for What do they call the international hoola hoop championships?are correct

    asked on May 3, 2012
  87. math

    jared wants to save $100 to buy a tennis racket.he saves $8 each week,and his mother gives him an extra $0.25 for each dollar he save.determine the number of weeks it will take jared to save $100.

    asked on January 11, 2011
  88. math

    I need to see how to arrange 8-1/5y=10x to mx+b form Is it -1/5y=10x-8? I need the slope and y intercept. Thanks much to who ever helps me. Can anyone show me how to work this?

    asked on September 4, 2010
  89. math

    How can you determine if two lines, plotted on the x-y graph and represented as y=mx + b are perpendicular?

    asked on August 30, 2010
  90. math

    divide 5 1/2 divied by 4 3/5 answer in simplest form. does simplest form mean a mixed number or decimal? I got an answer of 1 9/46 or 1.195652...

    asked on July 20, 2010
  91. reimbursement methodologies

    Could someone check my answers to see if they are correct. Any feedback would be greatly appreciated.. Mrs. Hall was admitted to the hospital for the first time this year on September 15. On September 25, she was transferred to a skilled nursing facility

    asked on May 12, 2010
  92. ETH/125

    Find four to six credible Web sites or articles that support, oppose, or present information about bilingualism in education or politics. I just need help knowing where to look...thanks...

    asked on February 16, 2010
  93. Stats

    A bag has 27 balls in it; numbered 1 through 27; no number repeats. If you select two balls from the bag without replacement what is the probability that both are more than 23?

    asked on February 24, 2016
  94. math

    buses to the stadium leave central station every 10 minutes buses to the zoo leave central station every 16 minutes both buses leave central station at 4 p.m. find the next time both buses will leave central station at the same time.

    asked on January 11, 2011
  95. PreCalc

    Find the standard form of the equation of the ellipse with the following characteristics. foci: (+/-5, 0) major axis of length: 22

    asked on December 2, 2010
  96. Mat115

    16÷(-2)◦(-4) ______________ 2³+ 4 16÷8 _______ 8 + 4 2 = 1 12 6 There is supposed to be a line under the first part of the problem making it a fraction.

    asked on July 14, 2010
  97. Math Algebra

    Complete xy table if x is 1, 2, 3, _, _, 6 and Y is 10,16, _, 24, 38 then create an equation of the function represented by the given data,

    asked on June 5, 2010
  98. reimbursement methodologies

    Can someone please double check my answers. Any feedback would be greatly appreciated..Thanks 1. By creating a committee on social welfare, the American Association of Labor Legislation helped to A. decrease public hospital costs. B. implement fee

    asked on May 13, 2010
  99. science

    Using this concept, what role do we each play in sustaining life on Earth? How do our food choices affect our own consumption of the nonrenewable energy available to sustain life?

    asked on January 19, 2010
  100. scientist

    Mrs. leuenberger ran the same marathon but since her husband was hunting and she couldn't find a babysitter she had to carry her two daughters in her arms they weigh 40pounds and 55pounds Mrs Leuenberger weighs 145 pound (but you didn't hear that from

    asked on October 25, 2009


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