Questions Asked on
June 19, 2014

  1. math

    Sue stacked one box onto another. The bottom box had the height of 2 1/3 feet and the top box had the height of 3 2/3 feet. How tall were the stacked boxes?

    asked by Sonya
  2. statistics

    A researcher wishes to estimate the proportion of college students who cheat on exams. A poll of 490 college students showed that 33% of them had, or intended to, cheat on examinations. Find the margin of error for the 95% confidence interval. solution I

    asked by Lucky Lady
  3. Astronomy

    A quasar is observed at a redshift of z=1, which corresponds to a comoving radial distance of 3 Gpc. Its observed bolometric flux is 10^{-12} erg/cm^2/s. An interacting companion galaxy is seen 4 arcsec apart in projection. What is the bolometric

    asked by qwerty
  4. engkish

    benign,blase,comprise,condescend,facade,glib,haughty,libel,pseudonym and redundant. When a famous actress arrived in town to work on a movie, an editor asked me to interview her. Because this was my first interview assignment, I felt far from_______(blase)

    asked by Linda
  5. chemistry

    calculate the moles of solute present in 1.25 centimeter cube of 0.5 M h3po4 solution

    asked by hifsa
  6. Chemistry

    Yesterday we combined Hydrochloric Acid HCl with Sodium Hydroxide NaOH in a violent reaction that resulted in water H2O and common table salt NaCl. How many grams of hydrochloric acid should we use so we have exactly enough to react with 40g of sodium

    asked by Sally
  7. Chemistry

    biochemists consider the citric acid cycle to be the central reaction sequence in metabolism. One of the key steps is an oxidation catalyzed by the enzyme isocitrate dehydrogenase and the oxidizing agent NAD+. Under certain conditions, the reaction in

    asked by Lety
  8. chemistry

    A solution contains 72.0 g of HCl and 468 g of (C6H6). What is the mole fraction of benzene?

    asked by Anonymous
  9. Physics

    You have a grindstone with a mass of 90.0 kg, 0.340-m radius, and is turning at 90.0 rpm. You press a steel ax against it, bringing it to a stop in 36.0 s. (a) What is the change in kinetic energy of the grindstone? (b) If the tangential force due to the

    asked by Anonymous
  10. math

    A triangle has a height of x meters and a base of 14 meters. Write and solve an inequality for the values of x that give an area of at most 112 m2003-06-04-00-00_files/i0230000.jpg. A. 2003-06-04-00-00_files/i0230001.jpg m B.

    asked by marquez
  11. physics

    1.∫ x³(x+1)dx 2.∫ (1-cot²x)dx 3.∫ cosx(tan x + sec x) dx 4.∫ dx/√5x+8 using u= 5x+8 and using u= √5x+5

    asked by karan
  12. Chemistry

    Which base is the strongest for the given [H+]? A)10^-9 B)10^-11 C)10^-10 D)10^-12

    asked by ginger
  13. Chemistry

    In the following reaction, 28 grams of Calcium Oxide CaO reacts with Carbon Dioxide CO2 to produce Calcium Carbonate CaCO3. How much Calcium Carbonate is produced? CaO+CO2 ---> CaCO3

    asked by Eve
  14. math

    Jefferson Bank made a loan at 6% interest for 146 days. If the amount of interest was $36.50, use the ordinary interest method to find the amount of principal borrowed. Round to the nearest whole dollar amount

    asked by Anonymous
  15. geometry

    The angle of depression from D to F measures 25°. If EF = 10 yd, find DE

    asked by Anonymous
  16. physics

    1.∫ csc (u-π/2) cot (u-π/2) du. 2.∫ sec^2(3x+2)ds 3.∫ √3-2s ds 4. ∫ 12(y^4+y4y^2+1)^2 (4^3+2y) dy use u= y^4+4y^2+1

    asked by karan
  17. probability

    90%of a countrys population are a right handed . what is the probability that exactly 29 people in a group of 30 are right handad?

    asked by Elin
  18. Health

    When a person has episodes of hypomania that shift back and forth with mild depression for at least two years, he or she has what form of bipolar disorder?

    asked by wolly
  19. Chemistry

    A solution of KCI is saturated at 50 degrees C. How many grams of solute are dissolved in 100g of water?

    asked by Anonymous
  20. Algebra can you give me direction

    Graph the line through the given point and with the given slope. (3,5); m = 1/2 Thank you

    asked by Mary Ann
  21. math

    what is the next two consecutive even numbers more than 580,500?

    asked by yhury
  22. math

    the smallest number with the digits 2,4,8,9,7,and 5?

    asked by yhury
  23. math

    a number consists of 7 digits and the sum of all digits is one.what is the number?

    asked by yhury
  24. mathematics

    Shorts notes on arcs,sectors,circles

    asked by john kelechi
  25. math

    the largest odd number with the digits 3,9,7,8,4 and 1?

    asked by yhury
  26. math

    the smallest even number greater than 600,000 with the digits 3,6,0,2,4,and 2?

    asked by yhury
  27. Algebra direction how to do it

    Graph the first-degree inequality in two unknowns. y > 4x -4 Thank you very much. I am not sure what a > is

    asked by Mary Ann
  28. english

    And no matter how(5)______(benign)my manner, she seemed to view me as some sort of threat. At one point, she became irate and yelled, "That's(6)_____(redundant)I don't have time to answer the same question twice." When I asked her about serious issues, her

    asked by Linda
  29. physics

    A 100-kg object is lifted to an altitude of 1000 km. What is the weight of the object on the ground? Does it have the same mass and weight at 1000 km? Explain.

    asked by Gene
  30. Government

    A(n) _________________________ differs from a direct democracy in that only a small number of elected representatives actually vote on a specific issue

    asked by JJ
  31. Algebra

    Find the domains of rational expressions 2b-2/2b^2-8 please show steps

    asked by michi
  32. trig

    if (-12,5) is a pointon the terminal side of an angel 0 find the exact value of six trig funcation of 0

    asked by sal
  33. physics

    A proton has mass 1.7×10−27 kg. What is the magnitude of the impulse required to increase its speed from 0.995c to 0.998c? magnitude of impulse = i used mv=vectorp i don't know what to do from there

    asked by sc
  34. physics

    what air speed and heading would enable a plane to travel [NE] with a ground speed of 275 km/h if there is a wind blowing at 55 km/h from the south?

    asked by joy
  35. Chemistry

    How many grams of hydrochloric acid should we use so we have exactly enough to react with 40g of sodium hydroxide? You'll need to write a chemical reaction, balance it, and then perform your calculation.

    asked by Sally
  36. physics

    Find the work done by 2.32 moles of an ideal gas if its volume doubles at a constant temperature of 22.6°C.

    asked by Anonymous
  37. math

    I have 102 sandwiches my friends ate 5/8 of the chicken sandwiches and 2/3 of tuna sandwiches,how many of each sandwiches did I make

    asked by gia
  38. college physics

    An ultrasonic motion sensor sends very short pulses for ultrasound to measure the distance to an object . The sensor cannot send another pulse until the echo form the previous pulse is detected. What is the maximum possible number of individual

    asked by sharon
  39. Math

    Find the roots by factoring. 25x squared - 30x= -9

    asked by Zoë
  40. chemistry

    what would the written chemical reaction be to this problem? How many grams of hydrochloric acid should we use so we have exactly enough to react with 40g of sodium hydroxide? You'll need to write a chemical reaction, balance it, and then perform your

    asked by anonymous
  41. Math

    A radioactive material takes 60 days to cut its radiation in half. If it starts at 100%, when will it be at 5%?

    asked by Anonymous
  42. math

    are the terms like or not. Explain why.4a,-122a

    asked by brook
  43. math

    1. An architect draws house plans for a client using the scale 1in= 4ft. How long shall the architect draw a wall that will be 22ft long Ans 5 1/2 in 2. If a coin is flipped 5 times, the probability of getting heads all 5 times is Ans 1/32 3. a bag of

    asked by need help
  44. epidemiology

    11. A study to assess the relationship between smoking and lung cancer found that the odds ratio is 4. Using your own words, interpret the odds ratio.

    asked by chy
  45. epi

    10. Assume that early detection of disease X through screening improves prognosis. In order for a screening program to be most effective, at which point in the natural history in the diagram must the critical point be? [ONE POINT] a. Between A and B b.

    asked by chy
  46. engineering science

    The mass of a truck is 5000kg and it is stationary on an incline plane making an angle of 16 with the horizontal. The coefficient of friction

    asked by Lihle
  47. Trigonometry

    solve: sec x-2^.5=0

    asked by Anonymous
  48. Math

    I am working on word problems and trying to figure this one out and need help. One mile is 5280 feet. Justin has a stride of 32 inches. How many steps will he take to run a 26 mile marathon? 5280 x 26 = 137,280 and I am stuck.

    asked by Cindy
  49. math

    find the value of sin 60degree/cos*cos 45degree- Cot 30degree+15cos90degree

    asked by malki
  50. Economic

    Suppose a firm has a constant marginal cost of$10 the current price of the product is $25, and at that price, it is estimated that the price elasticity of demand is -3.0. Is the firm charging the optimal price for the product? Demonstrate how you know.

    asked by Lala
  51. Math

    Compare and contrast the solutions of ax^2 + h = 0 to the solutions of ax^2 = h, where a and h are positive.

    asked by Jade
  52. algebra

    2y/3+2y-6/15

    asked by vanisha nisha
  53. math

    1. An architect draws house plans for a client using the scale 1in= 4ft. How long shall the architect draw a wall that will be 22ft long Ans 5 1/2 in 2. If a coin is flipped 5 times, the probability of getting heads all 5 times is Ans 1/32 3. a bag of

    asked by need help
  54. physics

    A ball is thrown vertically upwards and returns to its initial position in 6.0 second. What is its initial speed

    asked by afiqa
  55. math

    five friends plan a chess tournament. how many possible games can be played if each person plays with each other person exactly once.

    asked by jam
  56. chemistry

    What is the percent yield of NaCl if 31.0 g of CuCl2 reacts with excess NaNO3 to produce 21.2 g of NaCl

    asked by maribe
  57. Math

    Translate the following text into an equation involving ratios and solve it. " Anne is paid $45 per hour, if she works 55 hours in a particular week, how much will she be paid that week?

    asked by Johnny
  58. english

    10 examples of suffixes

    asked by crant
  59. Math

    How are addition and multiplication used to solve a linear equation? Demonstrate by solving " 15x+7=31+3x

    asked by Johnny
  60. math

    Select the approximate values of x that are solutions to f(x) = 0, where f(x) = -6x2 + 3x + 3.

    asked by jack
  61. Math

    I am a number between 1 and 10. My tenth digit is one more than my one digit; my hundredth digit is the sum of my one and tenths digits.

    asked by Andrea Vergara
  62. algebra

    By using just 5 threes get me the answer 31

    asked by Adithya
  63. math

    From a survey of 100 college students, a marketing research company found that 55 students owned iPods, 25 owned cars, and 15 owned both cars and iPods. (a) How many students owned either a car or an iPod (but not both)?

    asked by Anonymous
  64. Economic

    What is the south african government providing and to whom?

    asked by Asanele
  65. algerbra

    translate the equation 3 over 5-5=x(y+7)into a verbal sentence

    asked by ty
  66. maths

    Anu,Zami,Dan and Lemuel share 2 fruit bars.How can they share them equally? Sam,Farhana and Thandy must share 5 chocolate bars equally.How much chocolate will each get?

    asked by onis
  67. english

    benign,blase,comprise,condescend,facade,glib,haughty,libel,pseudonym and redundant. When a famous actress arrived in town to work on a movie, an editor asked me to interview her. Because this was my first interview assignment, I felt far from_______(glib)

    asked by Linda
  68. english

    1. Give two examples of each of the following elements of fiction and nonfiction from the texts you’ve read in Units 1, 2, and 3. Characters: Plot: Conflict: Setting: Point of View: Theme: Style: Tone: Perspective: Bias: Purpose:

    asked by Anonymous
  69. College Algebra

    A new store opens in New York. You received a coupon for $5.00 off a pair of jeans j(x) = x-5. When you get to the store you learn that they are giving a 25% discount d(x)=.75x a) Write a composite function for the cost of the jeans if the 25% discount is

    asked by Sheniqua
  70. math

    what is the square route of pi

    asked by billy bob joe
  71. Science

    What is oxygen made of

    asked by Billy
  72. Algebra

    Rational Expressions 1-x^2/x Second expression 2b-2/2b^2-8 please show steps

    asked by tbell
  73. chemistry

    Equilibrium is established in a reversible reaction when: A)the [product] = [reactants] B)rate of reaction of products = rate of reaction of reactants C)all the reactants dissolve or dissociate D)products are no longer produced

    asked by need help asap!