Questions Asked on
August 2, 2012

  1. math

    How many arrangements can be made using 4 letters of the word HYPERBOLAS if no letter is to be used more than once?

    asked by cha-cha
  2. chemistry

    Find the number of disintegrations per minute emitted by 1.1 mol of 232-Th in 1 min. The half-life of 232-Th is 1.4 x 1010 year I was able to do this with the following technique: 1.1 x 6.022 x10^23 =6.62x10^23 1.4x10^10=7.358x10^15 minutes I think then it

    asked by Nancy
  3. math

    Luis and Berto sell TVs. Last month Berto sold 15 more TVs than Luis. Together they sold 163. How many TVs did Luis sell?

    asked by haymee
  4. Physics

    A series RCL circuit has a resonant frequency of 1500 Hz. When operating at a frequency other than 1500 Hz, the circuit has a capacitive reactance of 5.0 Ù and an inductive reactance of 30.0 Ù. What are the values of (a) L and (b) C? I know I should be

    asked by Lauren
  5. Chem

    What is the PH of 0.40 M Na2SO3? (K1 for H2SO3 = 1.5 * 10^-2; K2 = 1.0 * 10^-7

    asked by XIA
  6. math

    A certain store is selling an $80 radio $64. If a different radio had a list price of $200 and was discounted at 1.5 times the percent discount on the $80 model, what would its selling price be? a) $90 b) $105 c) $120 d) $140 e) $160

    asked by Grace
  7. CHemistry- For Dr.Bob

    Hey Dr.Bob, I asked two days ago a question about a titration lab I had that you answered, but I still have one more question about that lab. Here's the lab summary: For my chemistry of solutions class, we had a titration lab where we titrated NaOH into an

    asked by Robert
  8. chem

    What is the entropy change to the surroundings when 1 mol of ice melts in someone’s hand if the hand temperature is 32°C? Assume a final temperature for the water of 0°C. The heat of fusion of ice is 6.01 kJ/mol. a. –188 J/K d. b. –22.0 J/K c.

    asked by zak
  9. math-law of sins

    solve the triangle: 1. A= 61 degrees a=8 b=21 2. A=136 degrees a=15 b=28 3. C=115 degrees b=12 c=7 For all of these problems I used law of sins and when I input it into my calculator I get domain error after doing sin inverse to get an angle degree. What

    asked by skye
  10. physics

    what net force is required to bring a 1500kg car to rest from a speed of 100kph within a distance of acceleration.

    asked by zianna
  11. chemistry

    why did the solution turn to pink at the end of the titration ?

    asked by methove
  12. Chem II

    Choose the aqueous solution below with the lowest freezing point. These are all solutions of nonvolitile solutes and you should assume ideal van't Hoff factors where applicable. a. 0.075 m NaI b. 0.075 m (NH4)3PO4 c. 0.075 m NaBrO4 d. 0.075 m LiCN e. 0.075

    asked by jenni
  13. physics

    what net force is required to bring a 1500kg car to rest from a speed of 100kph within a distance of acceleration.

    asked by zianna
  14. medical billing and coding

    what are the CPT and ICD-9-CM codes for following question? "this is a pleasant female who comes in with a soft tissue lesion in the left flank over what appeared to be a spigelian hernia site as well. However, it was not reducible and did not appear to be

    asked by andrea
  15. algebra/logs

    I don't understand this problem: (1/2)n = 0.015625 n log 0.5 = log 0.015625 n = log 0.5 / log 0.015625 n = 6 When I plug log .5 into the calculator it gives .3010 and when I plug .15625 to the calculator it is -1.806 and that would be -.3010/-1.806 =.1666.

    asked by Nancy
  16. calculus max area

    Maximize volume of a pyramid cut from peice of paper. (Problem) A pyramid consists of 4 isosceles triangles around a square base. If this is to be cut and folded out of a single square piece of paper, Maximize the volume. I am not sure where to begin here.

    asked by Amy
  17. Literature

    Great literature is educational because it A. allows you to simply observe and analyze. B. helps you draw on ideas you already have. C. won't challenge your beliefs. D. teaches rather than entertains. B?

    asked by Abby
  18. physics

    how long will it take for an apple falling from a 29.4m tall tree to hit the ground? how

    asked by Anonymous
  19. Literature

    In Act 5 of "The Tempest", why didn't Prospero tell Alonso about Antonio and Sebastian's plans to kill him? And because of his decision not to, what adjective would best describe Prospero?

    asked by Barbie
  20. Math

    What are the 3 solutions? I'm stuck! 6x=15(mod 21) a=6,m=21,b=15 d=gcd(6,21)=3 solns. 6x=15(mod 21) 2x=5(mod 7) 21=6(3)+3 6+3(2)+0 0=6-6 6-(21-6(3))=3 6-21+18=3 6( )-21()=3 (21-6(3))(15)-6=3 ???????

    asked by Shay
  21. Math

    A delivery service charges a base price for an overnight delivery of a package plus an extra charge for each pound the package weighs. A customer is billed $22.85 for shipping a 3-pound package and $40 for shipping a 10-pound package. 1.) Write an equation

    asked by Kiri
  22. Algebra

    Can someone help me with this please. Andrew factored the expression 20x^3-12x^2+8x as 4x(5x^2-12x^2+8x) but when melissa applied the distributive law and multiplied out 4x(5x^2-12x^2+8x)she got 20x^3-48x^3+32x thus Andrews solution does not appear to

    asked by Anonymous*
  23. math

    A small group of employees in a company get viruses on their computers. Every hour, each computer infects one other computer. If it takes 8 hours for 100 computers to be infected, how long would it take for only 50 computers to be infected?

    asked by Anonymous
  24. chemistry

    determine the concentration of Fe2+ ion the prepared solution

    asked by methove
  25. Math

    Consider the congruence 6x=15(mod 21). How many solutions does the congruence have? What are all the solutions?

    asked by Shay
  26. chemistry

    calculate the percentage of FeSO4 in sample Y

    asked by methove
  27. chemistry

    Using the given data, and the table of Standard Reduction Potentials, find the standard reduction potential for this half reaction: 8H^+ + BaCrO4(s) + 3e- -> Ba^2+ + Cr^3+ + 4H2O(l) given: Ksp (BaCrO4)=2.1E-10 DeltaGf* (kJ/mol): CrO4^2- (-727.75), Cr2O7^2-

    asked by kellie
  28. AP WORLD HISTORY

    WHAT WERE THE NEGATIVE EFFECTS/USES OF SPIRITS? (give several examples)

    asked by Olivia
  29. Math

    what does x reduce to???? 6x=15(mod 21) 2x=5(mod 7) x= ?(mod)7

    asked by Shay
  30. Law/421

    Sam is a high school math teacher. And, Becky is a student in his math class. During parent-teacher conferences, "Teacher Sam" tries to intimidate Becky's parents by telling them: "I'll teach your daughter math during class if you give me $1000." Is this a

    asked by anita
  31. math

    Last month a store sold 4 times as many tapes as CDs. If the total quantity of these two items sold was 360, how many tapes did the store sell?

    asked by amy
  32. Math

    Your municipality withdraws 10,000 gallons per day from an aquifer that originally held 1,000,000 gallons. The recharge rate to the aquifer is 2,000 gallons per day. Determine how long it will take before the aquifer is depleted

    asked by Nick
  33. apush leisler rebellion

    James II became King of England in 1685 and New York became a royal colony. James II decreed the formation of the Dominion of New England in 1686 and added the colonies of New York and New Jersey in May 1688, designating New York City as the capital. In

    asked by skye
  34. philosophy

    what would an example of how C.Wright Mills ethical theory might work

    asked by Anonymous
  35. Dynamics

    A stone is thrown vertically upward from the top of a 30m high building with a velocity of 15m/s. Taking the acceleration of stone as 9.81 m/s2. And taking that as constant, determine a) the velocity v and elevations sy of stone above the ground at any

    asked by Rajan
  36. World History

    What empire did Europeans come to eye like greedy creditorys around a rich man's deathbed?

    asked by Anonymous
  37. maths

    the length of a rectangle is twice its width, the area is 72sq inches,find its dimensions(find length and width)

    asked by 4611star
  38. math

    the length of a rectangle is 2 inches less than 8 times the width. the perimeter is 194 inches..find dimensions

    asked by Marcia
  39. Math

    Prove that if gcd(m,n)=1 then m^phi(n)+n^phi(m)=congruent 1 (mod mn)

    asked by Anonymous
  40. Geography

    You are lying down on your bed in the dorm, which measures 3 feet by 6 feet. Calculate the pressure in psi (lbs / sq inch) your body exerts, spread out upon the total area bed. 1 foot = 12 inches.

    asked by Jessica
  41. chemistry

    determine the mass of FeSO4 in sample Y that you use

    asked by methove
  42. AP World History

    Why were spirits an important staple in Colonial America?

    asked by Diana
  43. Statistics

    Exponential distribution was used to model the lengths of CD-ROM drives in a two drive system. The two CD-ROM drives operate independently, and at least one drive must be operating for the sytem to eperate successfully. Both drives have a mean length of

    asked by Danielle
  44. language

    Even though, it is almost summer we still have overcast skies and light rain.

    asked by tea
  45. math

    In how many districts ways can the letters in ENGINEERING be arranged?

    asked by cha-cha
  46. Statistics

    A random sample of customer incomes yields a mean income of $35000 with a standard deviation of $4500. Assume that the distribution of the incomes in normal. What income range would include 90% of the most popular incomes?

    asked by Danielle
  47. Math

    Solve the Following quadratic equations by completing the square. 7x(squared)+4x-13=8

    asked by Emir
  48. math

    a certain variety of strawberry plant sends out an average of 5 new runners per plant each year. If you planted 20 of these plants, how many strawberry plants would you have after 4 years?

    asked by Gavin
  49. math

    An elementary school has a large lunch room containing many tables. One day at lunch, the children at one table decide to see how long it will take to spread a rumor throughout the entire room. Each minute, the number of tables that know the rumor doubles

    asked by Anonymous
  50. math

    A woman goes to a store that sells used books and spends half of her money on books. Each day, she returns to the store and again spends half of her remaining money on books because she does not want to spend all of her money in one day. When she no longer

    asked by Anonymous
  51. math

    •Give two (2) reasons why Venn diagrams can be useful in explaining relationships

    asked by LaCresha
  52. calculus

    simplify 6x^4-2xy^4 divided by 2xy

    asked by Shea
  53. math

    whats it call, the total inches of height, length, all sides

    asked by Anonymous
  54. Statistics

    Can you show me how to figure out a sample size of N=60? What would the equation look like and how would I explain it to a class?

    asked by Beconna
  55. math

    how do you work out the problem 3/4ft.= how many inches.

    asked by Anonymous
  56. math

    Ms. Sue are you able to break 3/4ft.= how many inches for a 2nd. grader.

    asked by Anonymous
  57. Math

    Given (a+2,a-2)= a for all integers a, (6,2)= a) 3 b) 4 c) 5 d) 6 e) 8 The cost of a drive-in movie is $y per vehicle. A group of friends in a van shared the admission cost by paying $0.40 each.If 6 more friends had gone along,everyone would have paid only

    asked by Grace
  58. Trigonometry

    Simplify i^45. A. 1 B. i C. –1 D. –i

    asked by Anonymous
  59. chemistry

    determine the number of moles of FeSO4 in sample Y that you use

    asked by methove
  60. math

    #Algebra 2 Help Please?! If f = (1, 2), (2, 3), (3, 4), (4, 5), g = (1, -2), (3, -3), (5, -5), and h = (1, 0), (2, 1), (3, 2), find the following and state the domain: 2a.f+g 2b.f-g 2c.f(times)g 2d.f/h 2e.g o f o h Let f(x)=|x-5| and g(x)=1/x . Write the

    asked by Vicky
  61. math

    what is the area of a regular hexagon inscribed in a circle with area of 9?

    asked by Sara
  62. Mat0099

    Solve using the addition principle. 5=x+4

    asked by april
  63. Ms. Sue

    Hi Ms Sue! I Jusk wanted to check if i was right. I have to write how the exterior of St. Sernin, differs or shares similar designs from the interior. I said that they both have round arches. Is that good ?

    asked by Anonymous
  64. Computer Programing

    Assignment 1: chocolate Delights candy company, part 1

    asked by las veges
  65. AP World History

    How did rum play a role in the American Revolution?

    asked by Anne
  66. Informal Logic 103

    Write two arguments in English, one in the form of modus ponens and one in the form of modus tollens. Then, write the arguments in symbols using sentence letters and truth-functional connectives. (If your computer does not have all the symbols needed, use

    asked by Anonymous
  67. essay

    choose the most effective thesis from the following A i learned a valuable lesson B life is full of valuable lessons C the saying honesty is the best policy is a valuable life lesson D valuable lessons are inportant i life? i chose D

    asked by jessica
  68. math

    does it take more pressure to push water up a vertical pipe than the same pipe on a 45 degree incline

    asked by mike
  69. chemistry

    Calculate the following quantities. (See the periodic table.) (a) mass, in grams, of 2.54 10-2 mol of CdS g (b) number of moles of NH4Cl in 90.0 g of this substance mol (c) number of molecules in 5.081 10-2 mol C6H6 molecules (d) number of O atoms in 4.72

    asked by Anonymous
  70. social studies

    If a bow with a draw weight of 60 kilograms were to fire at someone 5 meters away but the user had to roll first before drawing back and firing two arrows. Would the target have enough time to dive for cover behind a rock?

    asked by Jack
  71. Math

    Noting that 666=2x3^2x37, find phi(666) using Euler Theorem.

    asked by Jonathan
  72. Math

    Find the units digit in 23^7777 by looking for mod 10.

    asked by Shay
  73. Algebra 1B

    Please help I am so confused... Question: supposed that y is directly proportional to x. a) use the given info to find constant of proportionally k. b) then use y=kx to find y for x=6 y= -62 when x=5 Please help.. thank you this is all I have so far. not

    asked by Liz
  74. maths

    find two even integers(numbers) so that the square of the smaller is 10 more than the larger one

    asked by 4611star
  75. Algebra

    Factor at the greatest common factor from the expression. Can someone please show me how to factor so I will know? Thank you! 18x^714x^2

    asked by Anonymous*
  76. math

    What is the difference in pressure needed to lift water 15ft in a three inch pipe on the vertical and the pressure needed to push water 15ft in a 3 inch pipe on a 45 degree incline?

    asked by Mike Stone
  77. English

    Help analyze this poem Amok He weaves his wife's limbs With those of her startled lover's. His sight grows dim as the flowered Sheets darken. His ears pound with heart's Hooves, the hoots and footstomping Of drinking mates who swear They would do the same

    asked by Jojo
  78. algebra

    The perimeter of a rectangle garden is 80m oits length is 4m more than 5 times its width, find the dimensions of the garden

    asked by math
  79. math

    Properties of quadrilaterals

    asked by Hritik goyal
  80. Math

    If point A is (-3,-2) and point B is (5,5) then what is the length of segment AB to the nearest tenth?

    asked by Grace
  81. math

    0.000006 show division

    asked by dajour
  82. math

    the sum of two numbners is 143. on of the numbers is 3 more than six times the other number..find the two number and show work

    asked by Marcia
  83. law/421

    whether the First Amendment to the U.S. Constitution protects defamation. the relationship between the First Amendment of the U.S. Constitution and censorship when doing business?

    asked by a
  84. law/421

    How does the strict liability doctrine apply to business corporations? Provide examples and explain how your example demonstrates the strict liability doctrine that applies to business corporations.

    asked by a
  85. Math

    The percent decrease from 5 to 4 is how much less than the percent increase from 4 to 5? A. 0% B. 5% C. 15% D. 20% E. 25%

    asked by Peter
  86. algebra

    find a if the line through (9,6a)and (15,a) has the slope -5/3..show work

    asked by Marcia
  87. math

    A man has $32 and decides to plant a garden. He cannot stand the thought of spending all of his money on any single day, so each day he goes to the store and spends half of his money on tomato plants. When he no longer has enough money to buy additional

    asked by Anonymous
  88. math

    A bag contains five purple ("P") blocks and one yellow ("Y") blocks. Without looking into the bag you reach in, take out a block, return the block to the bag, and then repeat the same process a number of times. Which of the following sequences of selected

    asked by Anonymous
  89. Calculus Max Profit

    To make pom poms in our school colors, we will have expenses of $100 to rent the Acme PomPom Plant, and then $0.25 per pom pom in materials. We believe that we can sell 500 pom poms if we charge $1.50. Assume the number sold is a linear function of the

    asked by Ronny
  90. Human Services

    I am doing an assignment on program planning and evaluation. In the last section of the essay I am supposed to identify the technical aspects that my fictional domestic abuse recovery organization may run into. I do not understand what a technical aspect

    asked by Jena
  91. PSY

    On p. 84 of the text, in the Thinking Clearly section, the conduction action potentials and activation of neurotransmitters is related to a row of mousetraps on a wobbly shelf. Think of your own original analogy you can use to describe the conduction of

    asked by Rebecca
  92. statistics

    A bag contains five purple ("P") blocks and one yellow ("Y") blocks. Without looking into the bag you reach in, take out a block, return the block to the bag, and then repeat the same process a number of times. Which of the following sequences of selected

    asked by Anonymous
  93. french

    Is the Plus-que-parfait tense the same as perfect tense in English?

    asked by Barbie
  94. math

    A can of paint and a paint brush cost a total of $35. If the can of paint costs $30 more than the paint brush, how much does the paint brush cost?

    asked by Anonymous
  95. math

    A certain printer can print at the rate of 80 characters per sound, and there is an average of 2,400 characters per page.If the printer continued to print at this rate, how many minutes would it take to print an M-page report? a) m/30 b) m/60 c) m/2 d) 2/m

    asked by Grace
  96. Math

    Compute 2^1000(mod 121) using Euler.

    asked by Jonathan
  97. Math

    A farmer wants to fence in part of her land so that her chickens will have their own little area. If she only has 28 feet of fence, what is the area of the largest pen that she can build in square feet?

    asked by Abiagil
  98. Math

    Find the remainder when 13^18 + 19^12 is divided by 247.

    asked by Shay
  99. Math

    A rectangular sandbox has a length of 60 inches, a width of 40 inches, and a depth of 6 inches. What is the volume in cubic inches?

    asked by Anne
  100. math

    Solve n + 1 = -4

    asked by Cal
  101. Calculus AP

    hi again im really need help TextBook: James Stewart:Essential Calculus, page 311. Here the problem #27: First make a substitution and then use integration by parts to evaluate the integral. Integral from sqrt(pi/2) TO sqrt(pi)of θ^3 cos(θ^2)dθ. i did

    asked by Vicky
  102. marketing

    Suppose that you've been hired by a local independent bookstore to help its owner win back customers lost to a large bookstore chain. Design and outline a plan to win back the store's lost customers and rebuild those relationships.

    asked by tyrone
  103. calculua

    describe the system. x+4y=1 and 3x+8y=2

    asked by Shea
  104. Algebra

    An account with $300 in it has been earning 3% annual interest compounded continuously for 10 years with no deposits or withdrawals in that time. How much was in the account 4 years ago.

    asked by Heather