Jeffrey

Most popular questions and responses by Jeffrey
  1. Statistics

    In 1998 a San Diego Reproductive clinic reported 49 live births to 207 women under the age of 40 who had previously been unable to get pregnant. Using the 90% confidence interval calculated above, would it be misleading for the clinic to report a success

    asked on October 27, 2013
  2. math

    Michael and mateo begin running around a circular track from the starting point at the same time. it takes Michael 48 seconds one lap around the track. it takes mateo 60 seconds to complete one lap around the track how many minutes does it take before the

    asked on December 15, 2013
  3. Probability as a Fraction

    In a bag there are 7 red tiles, 3 blue tiles, and 2 purple tiles. How many and what color tiles would you have to add to the bag so that the probability of picking red is 1/3?

    asked on April 24, 2011
  4. Economics

    Determine whether each of the following would cause a shift in the aggregate demand curve, the aggregate supply curve, neither, or both. Which curve shifts, and in which direction? What happens to aggregate output and the price level in each case? a. The

    asked on September 6, 2006
  5. Statistics

    A city ballot includes a local initiative that would legalize gambling. The issue is hotly contested, and two groups decide to conduct polls to predict the outcome. The local newspaper finds that 53% of 1200 randomly selected voters plan to vote "yes,"

    asked on October 28, 2013
  6. Statistics

    A city ballot includes a local initiative that would legalize gambling. The issue is hotly contested, and two groups decide to conduct polls to predict the outcome. The local newspaper finds that 53% of 1200 randomly selected voters plan to vote "yes,"

    asked on October 27, 2013
  7. Geometry

    The volume of a rectangular prism is 960 cubic inches. If the dimensions of the base are doubled and the height remains the same to create a new prism, what will be the volume of the new rectangular prism in cubic inches?

    asked on July 19, 2015
  8. College physics

    When a 0.15 kg baseball is hit, it approaches the bat with a speed of 20 m/s and undergoes an elastic collision. (a) What is the impulse delivered to the bat by the ball? (b) If the baseball is in contact with the bat for 1.3 ms, what is the average force

    asked on October 24, 2014
  9. 7 Mathematics

    A team of 4 golfers scored 69,73,70, and 74 on the first round on a par 72 course. They reduced their team score by 3 on the second round. a) How many strokes above or below par was the team score on the first round? b) How many strokes about or below par

    asked on May 16, 2011
  10. CHEMISTRY

    Assuming the density of a 5% acetic acid solution is 1.0 g/mL,determine the volume of the acetic acid solution necessary toneutralize 25.0 mL of 0.10M NaOH.

    asked on August 25, 2010
  11. math

    A cardboard box manufacturer wishes to make open boxes from rectangular pieces of cardboard with dimensions 40 cm by 60 cm by cutting equal squares from the four corners and turning up the sides. Find the length of the side of the cut-out square so that

    asked on July 25, 2011
  12. Math

    Repeat the following procedure for the four given numbers. Add 7 . Double the result. Subtract 4 . Divide by 2. Subtract the original selected number. The 1st number is 1 . The result is 5 . The 2nd number is 4 . The result is 5 . The 3rd number is 7 . The

    asked on January 10, 2016
  13. JJ

    A 30.84 mL volume of 0.128 M NaOH is required to reach the phnolphthalein endpoint in the titration of a 5.441 g sample of vinegar. Calculate % acetic acid in the vinegar.

    asked on August 25, 2010
  14. Trigonometry

    A building is 50 feet high. At a distance away from the building, an observer notices that the angle of elevation to the top of the building is 41 degrees. How far is the observer from the base of the building?

    asked on June 1, 2015
  15. Math

    If 2 1/3 feet of silver ribbon cost $.21, how much will 9 feet cost

    asked on June 13, 2014
  16. stats

    Among the contestants in a competition are 44 women and 26 men. if 5 winners are randomly selected, what is the probability that they are all men?

    asked on July 14, 2010
  17. thesis statement

    whats a good thesis statement on cooking

    asked on August 30, 2010
  18. Chemistry- Stochiometry

    The conversion factor for deriving the number of moles of salicylic acid, C7H6O3, from a given number of grams of salicylic acid is...

    asked on February 28, 2008
  19. math

    A balloon rises at a rate of 3 meters per second from a point on the ground 30 meters from an observer. Find the rate of change of the angle of elevation (in radians per second or rad/sec) of the balloon from the observer when the balloon is 30 meters

    asked on July 25, 2011
  20. CHEMISTRY

    In some solid calcium carbonate samples, calcium bicarbonate, Ca(HCO3)2, is also present. Write a balanced euation for its reaction with hydrochloric acid.

    asked on March 8, 2010
  21. Physics

    A lumberjack (mass = 98 kg) is standing at rest on one end of a floating log (mass = 245 kg) that is also at rest. The lumberjack runs to the other end of the log, attaining a velocity of +2.7 m/s relative to the shore, and then hops onto an identical

    asked on November 14, 2010
  22. math geometry

    The area of a rectangular wall of a barn is 80 square feet. The length is 12 feet longer than twice its width. Find the length and width of the barn.

    asked on September 15, 2016
  23. Math

    An automobile purchased for ​$31,000 is worth ​$2800 after 6 years. Assuming that the​ car's value depreciated steadily from year to​ year, what was it worth at the end of the third​ year?

    asked on January 13, 2016
  24. CHEMISTRY

    A 31.43 mL volume of 0.108 M NaOH is required to reach the phnolphthalein endpoint in the titration of a 4.441 g sample of vinegar. Calculate % acetic acid in the vinegar.

    asked on August 25, 2010
  25. Honors Geometry

    I'm stuck on these 2 problems. My Geometry teacher won't help me. What is the inverse of the Isosceles Triangle Theorem (ITT)? What is the contrapositive of the Isosceles Triangle Theorem (ITT)?

    asked on January 18, 2008
  26. chemistry

    Could someone help me with this please? In chemistry, we did a lab in which he put brands of commerical vinegar in a microplate. We put in 10 drops of each vinegar in each plate thinger then we added 1 drop of phenolphthalein and then put in as many drops

    asked on May 14, 2007
  27. ALGEBRA

    A SPINNER WITH FOUR EQUAL SECTIONS NUMBERED 3,5,7 AND 8 IS SPUN TWICE. WHAT IS THE PRBABILITY THAT AN ODD NUMBER IS SPUN THE FIRST TIME AND AN EVEN NUMBER IS PUN THE SECOND? IS THE ANSWER 3/4? IS IT THAT EASY OR NOT?

    asked on May 23, 2016
  28. chemistry

    Q: Calculate the unknown molar concentration of CH3NH2 in MeOH titrated against a known molar concentration of HCl ? Could you please answer this, there are lots of examples around calculation PH of two known's but not so much of unknown concentration.

    asked on August 24, 2012
  29. calculus

    A spherical balloon is being inflated so that its volume is increasing at the rate of 200 cm3/min. At what rate is the radius increasing when the radius is 15 cm.

    asked on July 31, 2011
  30. math

    A right circular cylinder is to be designed to hold 750 cm3 of processed milk, and to use a minimal amount of material in its construction. Find the dimensions for the container.

    asked on July 25, 2011
  31. math

    Given the following equation x,y data pairs find the least squares equation for these data. Use 3 decimal places. Y equals what + what x(3,3)(4,5)(6,8,)

    asked on January 19, 2011
  32. pre algebra

    the ratio of boys to girls in an art class is 3.5. there are 12 boys in the class. how many girls are in the class?

    asked on October 4, 2011
  33. algebra

    I need help!!! 3/2,1/2, 1/6,1/8,... I need to determine if this sequence is arithmetic, geometric, or neither, then I need to find the ninth term

    asked on April 19, 2009
  34. algebra

    this tells me to rewrite the expression using the distributive property and then simplify plz help me and show me the work here are the questions. 15(f+1/3) 16(3b-0.25) (c-4)d

    asked on August 25, 2010
  35. math

    Find the radius and the diameter to the nearest hundredth when C = π yd. Use 3.14 for π.

    asked on April 27, 2018
  36. Math

    Which shapes have more than one line of symmetry? Explain your thinking

    asked on February 8, 2017
  37. Algebra

    I am working on a review worksheet and there are 2 problems I can't remember how to do. Each question has 6 other questions, so helping me with these will remind me how to do the others! Thank you!! 1.2(x+5) = 1.6(2x+5) and Solve for y a(y+c) = b(y-c)

    asked on August 22, 2015
  38. physics

    1. An electric pump, used to obtain water from 20 metres below the ground, is marked 5000W. a) If the pump operates as rated, how much energy is used to pump water every second? b) Describe the energy conversions that take place when the pump is used. c)

    asked on April 6, 2015
  39. math

    given the following equations x,y data pairs find the least squares equation fo these data. use 3 decimal places. Y equals what + what x (3,3)(4,5)(6,8)

    asked on January 19, 2011
  40. Technology

    Would the president of a technologies workers union be considered a stakeholder for a telecommunication company?

    asked on January 6, 2011
  41. algebra

    I need help!!! 3/2,1/2, 1/6,1/8,... I need to determine if this sequence is arithmetic, geometric, or neither, then I need to find the ninth term

    asked on April 19, 2009
  42. Social Studies

    Is there a desert in Italy? http://www.google.com/search?q=map+italy&rls=com.microsoft:en-us:IE-SearchBox&ie=UTF-8&oe=UTF-8&sourceid=ie7&rlz=1I7SUNA Nope. =)

    asked on April 23, 2007
  43. Circles

    2 circles have different radius touch at a point and at the point has 1 common tangent and another common tangent touching the circles at different points other than the first

    asked on January 15, 2015
  44. Graphing

    The line l1 passes through the points (3,-3) and (-5,2). The line is the graph of the equation Ax + By = C, where A, B, and C are integers with greatest common divisor 1, and A is positive. Find A + B+ C.

    asked on December 31, 2014
  45. calculus

    For the function r(x)=x3+6x2x2−36, find the following. a. the y - intercept b. the x - intercepts c. all horizontal asymptotes. y = d. all vertical asymptotes. x =

    asked on May 29, 2013
  46. math x

    8. The Chicago Public School system has about 680 schools. About 130 of the schools will be closed. If five schools are chosen at random find the probability that at least 3 of them will be closed.

    asked on April 3, 2013
  47. physics

    static friciton is greater than sliding friction prove

    asked on July 19, 2011
  48. Pre algebra

    y/2 - 5y/6 + 1/3=1/2

    asked on May 8, 2010
  1. Math

    LOL

    posted on February 14, 2019
  2. Math

    excuse ,'teacher I did not do that one' teacher:ok why student: my grandma is in the hospital and my mom said you will do your homework later and I was in the hospital the whole day and had go to sleep after

    posted on February 14, 2019
  3. math

    Well u better shut the heck up cause I don't care kid

    posted on December 9, 2018
  4. math

    I agree

    posted on December 9, 2018
  5. MATH

    Help everyone!!!!!!!!!!!!!!!!!!!!!!!!!!!

    posted on December 6, 2018
  6. MATH

    Wtf I'm confused isn't it 40 on mine their is no 30

    posted on December 6, 2018
  7. geometry

    sosos

    posted on February 28, 2018
  8. Physics

    C,A,B

    posted on January 4, 2018
  9. social studies

    Joy is right. I got a 100%

    posted on October 6, 2017
  10. Algebra 1

    y=-10/x

    posted on September 14, 2017
  11. math

    45

    posted on February 24, 2017
  12. chem 1

    Molarity=number of moles(n)/volume also n=mass(m)/molar mass(M) therefore, Molarity(C)=mass/molar mass*volume C=58.44g/0.5L(58.44g/mol) C=2moles per litre

    posted on January 23, 2017
  13. life orientation

    this it put or result people's life in danger because of insufficient of natural resource

    posted on April 28, 2016
  14. Sociology

    The socialization process ends with the onset of puberty.

    posted on March 6, 2016
  15. Math estimation problem

    It is 100 for estimation if yo are dividing.

    posted on October 22, 2015
  16. debate

    resolved that capital punishment in the philippines in affirmative side

    posted on October 12, 2015
  17. Algebra

    Got it! Thank you Steve!

    posted on August 22, 2015
  18. algebra

    6P4 = 6!/(6-4)! =6*5*4*3*2*1/2! =6*5*4*3*2*1/2*1 =720/2 =360. (/)-represents division. (*)-represents multiplication. Thanks. I hope it was super helpful.

    posted on April 24, 2015
  19. Chemistry

    thanks saizad

    posted on April 12, 2014
  20. Statistics

    Thank you, but I'm still confused. So is there not enough info to answer this question? Thank you for your time.

    posted on October 28, 2013
  21. calculus

    The function is x^3+6x^2/x^2+36.

    posted on May 29, 2013
  22. science

    dilute

    posted on February 12, 2013
  23. chemistry

    thanks, sorry, 10ml of the unknown mixture was titrated methyl orange was used it took 7.5ml of 1M HCl (.0074Mol ?) so this means .00074Mol CH3NH2 / ml ?

    posted on August 26, 2012
  24. algebra

    thank you

    posted on August 25, 2010
  25. Honors Geometry

    Okay. I figured the problem out now. Thanks for your help!

    posted on January 18, 2008
  26. Honors Geometry

    Okay, the ITT is If a triangle has two congruent sides, then the angles oppositeof those sides are congruent

    posted on January 18, 2008
  27. Honors Geometry

    hmm.. okay, but i'm not really seeing how that goes with the ITT

    posted on January 18, 2008