Questions Asked on
March 6, 2011

  1. physics

    To stretch a certain spring by 2.00 cm from its equilibrium position requires 9.50 J of work. a. What is the force constant of this spring? b. What was the maximum force required to stretch it by that distance?

    asked by Ana
  2. Chemistry

    Element X has two natural isotopes:X-6 (6.015amu) and X-7 (7.016amu). calculate the atomic mass of element X given the abundance of X-7 is 92.5%. a)12.5amu b)6.50amu c)6.09amu d)6.52amu e)6.94amu

    asked by trisha
  3. Calculus 12th grade (double check my work please)

    1.)Find dy/dx when y= Ln (sinh 2x) my answer >> 2coth 2x. 2.)Find dy/dx when sinh 3y=cos 2x A.-2 sin 2x B.-2 sin 2x / sinh 3y C.-2/3tan (2x/3y) D.-2sin2x / 3 cosh 3yz...>> my answer. 2).Find the derivative of y=cos(x^2) with respect to x. A.-sin (2x) B.-2x

    asked by anon
  4. ENG1010

    Which of the following is an announcement rather than a topic sentence? A) I want to talk about the increase in the divorce rate. B) Many people have trouble getting along with others. C) Almost one out of every two marriages ends in divorce. D) The

    asked by Alex
  5. Literature 1010

    Transitions function much like road signals. A) True B) False this question does not make sense. when i look in my book ans online, i do not see anything referring to the Transitions function can someone tell me what a transition function relating to

    asked by Alex
  6. Literature 1010

    A topic statement is made up of a limited topic and a writer's point about the limited topic? True Or False.

    asked by Alex
  7. physics

    Two carts, one twice as heavy as the other, are at rest on a horizontal frictionless track. A person pushes each cart with the same force for 6.00 s. If the kinetic energy of the lighter cart after the push is K, the kinetic energy of the heavier cart is

    asked by Ana
  8. calculus

    Find the rate of change of area in respect to temperature of a rectangle. Its a steel plate that expands when heated. I have to find that rate of change when width is 1.7cm and length is 2.9. dl/dt=1.0 x 10^-5 (this is an exponent...) and dw/dt=8.0 x 10^-6

    asked by Liz
  9. Physics

    A child sits on a rotating merry-go-round, 2.19 m from its center. If the speed of the child is 2.32 m/s, what is the minimum coefficient of static friction between the child and the merry-go-round that will prevent the child from slipping?

    asked by Christian
  10. Economics

    As the aggregate price level falls, the number of domestic products purchased by foreigners will [rise], causing the quantity of domestic output demanded to [rise]. This is known as the [foreign purchases effect]. The first two blanks can be rise,fall or

    asked by Jake
  11. Physics

    A 35.0-g bullet moving at 475 m/s strikes a 2.5-kg wooden block. The bullet passes through the block, leaving at 275 m/s. The block was at rest when it was hit. How fast is it moving when the bullet leaves?

    asked by Anonymous
  12. Chemistry

    How many milliliters of 3.0 M NaOH are required to react with 4.0mL of 16.0 M HNO3? ---> Not sure if I am solving correctly but I keep getting 21mL.

    asked by K
  13. MATH

    Please help check my answers to make sure they are correct. I used the "sinking fund payment and present value of an ordinary annuity" formulas to solve this story problem. Thanks! Story: Naomi Dexter is 20 years old. She decides to investigate several

    asked by April
  14. Physics

    To move a large crate across a rough floor, you push on it with a force at an angle of 21 below the horizontal, as shown in the figure. Find the acceleration of the crate if the applied force is 400 , the mass of the crate is 32 and the coefficient of

    asked by Randy
  15. Psychology/ Human Growth

    6. According to Kohlberg, a person's stage of moral development is determined by the: a. Type of moral reasoning the person exhibits b. Specific moral conclusions the person reaches c. Overall intelligence of the individual d. Person’s actions in dealing

    asked by MEGHAT
  16. chem

    Magnesium burns in air to produce magnesium oxide, MgO, and magnesium nitride, Mg3N2. Magnesium nitride reacts with water to give ammonia. Mg3N2(s) + 6 H2O(l) → 3 Mg(OH)2(s) + 2 NH3(g) What volume of ammonia gas at 24°C and 753 mmHg will be produced

    asked by D
  17. math

    a regular triangular pyramid with a slant height of 9 m has a volume equal to 50 m³. Find the lateral areas of the pyramid.

    asked by mhy
  18. Organic chemistry

    Draw major product of substitution reaction of (2R,3S)2-bromo-3-methylpentane with CH3CH2O- nucleophile?

    asked by Zoe
  19. Physics

    Why is the total distance traveled by a mass traveling in a circle of radius R during n revolutions, 2piRn?

    asked by Mandy
  20. Chemistry

    1. Calculate the number of calories needed to increase the temperature of 50.0 g of copper metal from 21.0 degrees C to 75.0 degrees C. Given, the specific heat of copper is 0.382 cal/g x degrees C. 2. What will be the final temperature if 2000g of copper

    asked by Shona
  21. trig

    give and exact value for cos(2pi/3)

    asked by Nicole
  22. physics

    A cart running on frictionless air tracks is propelled by a stream of water expelled by a gas-powered pressure washer stationed on the cart. There is a 1.0-m3 water tank on the cart to provide the water for the pressure washer. The mass of the cart,

    asked by HELP!!!!
  23. maths

    if it takes 1 monkey to eat a banana in 1 minute how long will it take 8 monkeys to eat 8 bananas

    asked by chloe
  24. geometry

    Quadrilateral QRST has two pairs of congruent sides, but it is not a parallelogram. What figure is it? What further condition would it have to satisfy to be a parallelogram? A. The figure is a square. To be a parallelogram, it would have to have pairs of

    asked by Kate
  25. Geometry

    Find the perimeter of a square to the nearest tenth if the length of its diagonal is 16 millimeters

    asked by Amber
  26. trig

    if theta is an angle in standard position and B(-3,4) is a point on the terminal side of the angle, what is the value of sin theta?

    asked by Victoria
  27. math

    al has 3 less than 4 times as many candy bars as neil,n. write an expression representing how many candy bars al has compared to neil --->>>> THNX!:))

    asked by alexis
  28. Math

    Which term in the expansion of ((1/2x^3)-(x^5))^8 is a constant? THANKS!!

    asked by Jowin
  29. English

    I need help with a catchy slogan for a bow with WI-FI connectivity, a pop-up screen, and the ability to change colors and change into all accessories? Can someone help???Thank you!

    asked by Anoymous
  30. math

    find the values of a and b if the function y=2x^3+ax^2+bx+36 has a local maximum when x=-4 and a local minimum when x=5

    asked by badial
  31. physics

    A cylindrical rod( length L, radius R and density d) is dipped vertically in to a liquid. the rod is connected by a wire to a balance that measures the force to lift the rod. the contact angle between rod and liquid is θ. If rod is partially immersed so

    asked by kinjal
  32. Chemistry

    How many milliliters of 3.0 M NaOH are required to react with 0.50g of Cu2+ to form Cu(OH)2?

    asked by K
  33. physics

    Driving in your car with a constant speed of 12 m/s, you encounter a bump in the road that has a circular cross-section. If the radius of curvature of the bump is 35 m, find the apparent weight of a 63-kg person in your car as you pass over the top of the

    asked by Randy
  34. statistics

    refer to the schools data set in appendix m which refers to the 94 school districts in northwest Ohio. divide the school districts into two groups. include all schools with less than 2000 students in one group and the other being the ones with more than

    asked by sarah
  35. physics

    a uniform electric field of magnitude 2.5*10^4, makes an angle of 27 with a plane surface area of 0.0133m^2.what is the electric flux through the surface.

    asked by ike
  36. college subjeet physics

    a100 grams bullets is fired from a 10kg gun with a speed of recoil of the gun

    asked by ayesha khan
  37. Algebra

    Bracelets You are making beaded bracelets for your friends. You want to use 30 beads for each bracelet and want to use no more than 145 beads. Write an inequality that models this situation. Can you make 4 bracelets?

    asked by Vanessa
  38. Literature 1010

    The third step in effective writing is to A) organize and connect the specific evidence in a paper B) write clear, error-free sentences C) make a point D) support a point with specific evidence

    asked by Alex
  39. algebra

    the sum of two polynomials is 40x^5-2x^4+x^3-7x^2-1. if the polynomial is the square of (x^2-7x+1), find the other polynomial

    asked by Anonymous
  40. chemistry

    H2 (g) is made when 8.5 grams of Li is placed in water. The reaction also creates Lithium Hydroxide. Li + H2O --> LiOH + H2 How much H2 (g) is made? (the (g) means gas!)

    asked by Lily
  41. math

    A right circular cone is inscribed inside a sphere. The right circular cone has the radius of the base of 4 inches and the height is greater than 2 inches. The sphere has a radius of 5 inches. What is the ratio of the volume of the cone to the volume of

    asked by Jessica
  42. english

    how would you say Clara Bow, felt about men? There's one quote where she says: The more I see of men, the more I like dogs.

    asked by Sarah
  43. Calculus

    Determine if Rolle's Theorem applies to the given function f(x)=2 cos(x) on [0, pi]. If so, find all numbers c on the interval that satisfy the theorem.

    asked by Ky
  44. science

    what is an independent variable

    asked by kevin
  45. Physics

    At 7.65 cents per kilowatt-hour, what does it cost to operate a 10.0 hp motor for 6.00 hr? At 7.65 cents per kilowatt-hour, what does it cost to leave a 75.0 W light burning 24.0 hours a day?

    asked by Ana
  46. HCA 270

    What types of cost allocation criterion and methods are available to all healthcare organizations?

    asked by MMMMMMM
  47. chemistry

    what is a type III binary compound containing 3 atoms per molecule, with a total # of protons being 32? It's not Silicon dioxide, because SiO2 has 30 protons.. i need 32..

    asked by Maria
  48. chemistry

    what is a type III binary compound containing 3 atoms per molecule, with a total # of protons being 32? It's not Silicon dioxide, because SiO2 has 30 protons.. i need 32..

    asked by Maria
  49. Math- Linear Programming

    A dog food is to be mixed from three kinds of ingredients: rolled oats, beef parts, and whey. The cost of each is 20 cents, 40 cents, and 35 cents per lb. Each ingredient contains 50, 450, and 200 units of protein and 350, 65, and 100 units of carbohydrate

    asked by Melissa
  50. Math

    Find (f-g)(-3) when f(x) = x + 3 and g(x) = sq. rt. x - 7

    asked by Britt
  51. Math

    Farmer McDonald has 150 acres of land to put into crops and 8000 dollars to spend planting and raising them. He can plant two crops, which we'll call crop A and crop B. Crop A costs $40/acre to raise and crop B costs $60/acre. He also has time costs to

    asked by Jacqueline
  52. Math

    determine if the given function is one-to-one. if it is, find the inverse. f(x) = 8x - 4 A) f-1(x) = x+4 / 8 B) f-1(x) = x-4 / 8 C) Not one-to-one D) f-1(x) = x/8 + 4

    asked by Jo
  53. Chemistry

    The freezing point of a 0.10m solution of mercury(I) nitrate is approximately -0.27 degrees celsius. Show that these data suggest that the formula of the mercury(I) ion is Hg2 2+

    asked by Amy
  54. com 170

    I believe this paragraph below is a Analysis I have to pick between summary,analysis, synthesis, and evaluation can you tell me if i am right and if not which one and why? 1. Alice Doe’s article discussed overlooked tax deductions. It talked about some

    asked by frank
  55. Math

    An expression that equals 377 and contains a multiple of 9 but no 2 or 5

    asked by Prp
  56. foundation of personal finance

    did the recommendation change the way you previously thought about buying vs leasing a car?

    asked by amanda
  57. social studies (urgent)

    ok i am researching on chad and i need help finding some stuff what are chad dances what are chad arts please help and thank you

    asked by neeedhelppp
  58. history

    Major outcomes of the Spanish-American War included all of the following EXCEPT: A. the establishment of an extensive American empire. B. the emergence of the nation’s status as a world power. C. the reluctance of the government to get involved in other

    asked by sharice
  59. English

    Can any one show me how to cite a page the correct way for a research paper?

    asked by Abe
  60. Physics

    12MJ of energy is released when 1kg of dynamite is exploded. How much matter is converted into energy in the process?

    asked by Dee
  61. physics

    what impulse occurs when an average force of 10n is exerted on a cart of 2.5 s? What change in momentumdoes the cart undergo/ If the mass of the cart is 2K and the cart is initally at rest, calculate it's final speed.

    asked by stan
  62. Algebra

    3x to the second power,minus 15x plus 18 is????

    asked by Christina
  63. HUM/176

    in my assignment it asks me to compare and contrast information in the news stories as well as how they are presented. It also asks to answer the following questions, what links are included and how does the commentary associated with the stories and

    asked by sandi
  64. Financial Management

    The group product manager for ointments at American Therapeutic Corporation was reviewing price and promotion alternatives for two products: Rash-Away and Red-Away. Both products were designed to reduce skin irritation, but Red-Away was primarily a

    asked by Anonymous
  65. physical

    A battery of e.m.f 24v and internal resistance of 4ohms is connected to a resistor of 3ohms.what is the terminal potential difference of the battery

    asked by vincent
  66. social studies

    self made millionaire who started in door-to-door sales

    asked by suzane
  67. english

    Write the missing verb form present get past got then what would past tense be with has,have, or had? would it be went or gone? Thanks

    asked by jill
  68. Math

    Simple Interest Rate Question? Prt=(18000)(0.075)(18/12) = to 2025? 18 months -12 (1yr)

    asked by Bettye
  69. chemistry

    A sample of calcium nitrate with a mass of 1.00 g was dissolved in water and diluted to 100.00 mL in a volumetric flask. What is the concentration of the calcium nitrate ?

    asked by cassie
  70. physics

    if the rolling ball represents the running vaulter and the ruler represents the pole in the model, how does the amount of bend in the pole depend on the vaulters running speed? record your data and response in your log.

    asked by dana
  71. chemistry

    A sample of calcium nitrate with a mass of 1.00 g was dissolved in water and diluted to 100.00 mL in a volumetric flask. What is the concentration of the calcium nitrate ?

    asked by cassie
  72. chemistry

    Write the relevant chemical equations that will allow you to separate the following cations : 1-Hg subscript 2 2-Cation 2+, 2-Pb2+, 2-NH subscript 4 cation + 5- MN2+, and Fe3+

    asked by Anonymous
  73. Chemistry

    What is the purpose of adding zinc chloride in the preparation of starch iodide paste? Please refer to the procedure below: - Starch Iodide Paste- Heat 100mL of water in a 250mL beaker to boiling, add a solution of 0.75g of potassium iodide in 5mL of

    asked by Jan
  74. Psychology/ Human Growth

    1. One undesirable change that often occurs during adolescent growth spurt is a(n) a. Dangerous enlargement in heart size b. Change in eye shape, causing nearsightedness c. Increased likelihood of asthma d. Decrease in lung capacity I have a college test

    asked by MEGHAT
  75. Psychology/ Human Growth

    2. According to Piaget, many 16 year-olds have reached the cognitive stage called: a. Preconventional thought b. B. formal operational thought c. Concrete operational d. Postconventional thought Please help me and Thank you so much!

    asked by MEGHAT
  76. Chemistry

    Can someone please help me complete these calculations for my lab; I am having some trouble. A. Standardization of Na2S2O3 -Mass of KIO3 in 100mL = 0.09600g -Calculate Molarity of KIO3= ? Please check: 0.09600g/(214.0g/mol)=4.486x 10^-4 mol -4.486

    asked by Bryant
  77. statistics

    60% of the students at a college are female. If 13 students at that college are selected random, find the probability that 5 or 6 students will be female

    asked by jill
  78. math

    If a hot dog vendor offers 18 different condiments; how many condiment combinations are there?

    asked by Rob
  79. hca270

    what are the appropriate uses of a budget?

    asked by MMMMMMM
  80. Linear Algebra

    1/ Prove that the set V=R+ ( the set of all positive real numbers) is a vector space with the following nonstandard operations: for any x,y belong to R+ & for any scalar c belong to R: x O+ ( +signal into circle) y=x.y (definition of vector addition) & c O

    asked by Tri N
  81. Trig

    If = 58° and m = 120 in, what is the value of n to the nearest tenth of an inch?

    asked by Josh
  82. physics

    2 energy questions to fill in the blank: 1) The path that an object follows as it is raised does not affect the _____ of the object. 2) The increase in potential energy of any system is equal to the output _____.

    asked by Nabil
  83. math

    In OO, mbac=290°.find m

    asked by liz jones
  84. AP Calculus

    Find the total area enclosed by the graph of y=(e^sinx)*(cosx) and the x-axis from x=0 to x=pi I got .0563331993 but when I checked it graphically I got 3.22765

    asked by Leanna
  85. ENG

    Choose the correct verb: Some people (know, Knows) more about their favorite TV characters than they do about the members of their own family. A) knows B) know

    asked by Katie
  86. PHYSICS

    A CIRCULAR SAW BLADE ROTATING AT 15 REV/S IS BROUGHT TO A STOP IN 125 REV. WHAT IS THE VALUE OF WO IN RAD/S? 94.2 RAD/S WHAT IS THE SIZE OF THE DISPLACEMENT, TEITA, IN RADIANS? WHAT IS THE SIZE OF THE ANGULAR ACCELERATION EXPERIENCED? HOW LONG DID IT TAKE

    asked by DMITRIC
  87. Sociology

    how can the concept of structuration help us to understand better the challenges faced by MaMarrandi?

    asked by nobubelo
  88. ENG

    The second stage in the writing process is to A) accumulate raw material. B) brainstorm or freewrite or make a scratch outline C) shape your raw material through a series of two or more drafts D) edit your draft of the paper

    asked by Bobby
  89. Physics

    For a physics lab involving watchnig a gldier move down an air track with uniform acceleration, and recording the results in a table then graphing the results,do I include that "Observations were held and results were recorded in a table. Two graphs, one

    asked by Emily
  90. CALCULUS

    Y=(XSQUARE + 1 OVER XSQUARE - 1) CLOSE PARENTHESIS TO THE 3 POWER...

    asked by DMITRIC
  91. math

    How many two digit numbers are there in base 5. I really don't understand how to figure this out. I know it's been asked already, but I still don't understand it.

    asked by jason
  92. com 156

    Write two paragraphs, with a total minimum word count of 350 words, explaining what your point of view will be and what you plan to accomplish in your paper. My thesis is on why credit card companies should not market on campus.

    asked by sheyenne
  93. Calculus

    Find the derivative of f(x)=e^(sin(1))+(sin(1))^x.

    asked by Abigail
  94. math helpp

    kathy will babysit six cats. she charges $75 for the week for supplies and $8 for each hour,h,she works. write an expression for the total amount kathy charges. -->> THNX!!!

    asked by alexis
  95. com 156

    why should credit card companies not be allowed to market on campus?

    asked by sheyenne
  96. math

    Find the value (in lowest terms) of the following product: (1-1/2^2)(1-1/3^2)(1-1/4^2),...,(1-1/2011^2).

    asked by Janice
  97. Algebra

    Gloria has a gallon of paint to cover 500 square feet of drywall. She pointed out that for 10,000 square feet she needs 20 gallons of paint. Let's say the output (the range) is going to tell us how many gallons of paint to buy at the hardware store. The

    asked by Jada
  98. Psychology/ Human Growth

    3. With his new ability to think hypothetically, a 13 year-old boy is most likely to: a. Think about how things should be b. Accept conditions as they are c. Feel confident about his future d. Believe that the world is just 4. One of the inadequacies of

    asked by MEGHAT
  99. math

    write an algebraic expression representing three less than half a number

    asked by alexis
  100. math

    write an algebraic expression representing three less than half a number

    asked by alexis
  101. physics

    A uniform, square metal plate with side L = 3.50 cm and mass 0.087 kg is located with its lower left corner at (x, y) = (0, 0) as shown in the figure. Two squares with side length L/4 are removed from the plate. (a) What is the x-coordinate of the center

    asked by Anonymous
  102. international relations

    what is happening in Libya/ what was happening for the past few das

    asked by nobubelo
  103. math hellp me please

    write a algebraic expression representing 3 more than the quotient of 4 and a number,n

    asked by alexis
  104. math

    In triangle ABC, side AB = 17 inches and side BC = 25 inches. What could be the length of side AC?

    asked by Julia Maloney
  105. Social

    Durning the industrial revolution, as the expansion of industry happened and the scale and volume of production increased, what impact did this have on the market system?

    asked by Jon
  106. chemistry

    what is the numerical value of the equilibrium constant Kgoal for the reaction CO2(g) C(s) +O2(g)

    asked by gin
  107. international relations

    what is happening in Libya/ what was happening for the past few das

    asked by nobubelo
  108. Physics

    In 1996, the Fiberoptic Link Around the Globe (FLAG) was started. It initially involves placing a 27,000 km fiber optic cable at the bottom of the Mediterranean Sea and the Indian Ocean. Suppose the index of refraction of this fiber is 1.56. If all

    asked by Ashley
  109. math

    16_k=8 In the equation above, _ represents one of the operations of arithmetic: addition, subtraction, multiplication, or division. If k is a positive integer not equal to 8, what must be the value of k?

    asked by Haley
  110. Physics

    In 1996, the Fiberoptic Link Around the Globe (FLAG) was started. It initially involves placing a 27,000 km fiber optic cable at the bottom of the Mediterranean Sea and the Indian Ocean. Suppose the index of refraction of this fiber is 1.56. If all

    asked by Ashley
  111. math

    during a special promotion, each customer who makes a purchase is given a coupon for a discount of either 10,20, 30,40, or 50 percent. if a customer has an equal chance of receiving any one of the 5 types of discount coupons,what is the probability that

    asked by joe
  112. trig

    tanx sin^2x capital sigma [0,2p]

    asked by Bennett
  113. economics

    What would happen to unit sales and total revenue for this textbook if the publisher reduced its price?

    asked by sue
  114. math

    The probability is 1 in 4,000,000 that a single auto trip in the United States will result in a fatality. Over a lifetime, an average U.S. driver takes 50,000 trips. (a) What is the probability of a fatal accident over a lifetime? Explain your reasoning

    asked by d
  115. physics

    A thin rectangular plate of uniform area density σ1 = 1.00 kg/m2 has a length a = 0.500 m and a width b = 0.210 m. The lower left corner is placed at the origin, (x, y) = (0, 0). A circular hole of radius r = 0.040 m with center at (x, y) = (0.057 m,

    asked by Anonymous
  116. physic

    A 120-kg box is loaded into the trunk of a car. If the height of the car's bumper decreases by 20 cm , what is the force constant of its rear suspension? looking for N/m

    asked by Randy
  117. calculas

    how long will it take an ice cube to melt completely? You left out an ice cube ant 1/4 of it melts in 1 hour. Use the following steps to find out how long it will take before it is melted completely. 1-let s represent the side length of the ice cube, and

    asked by julie
  118. physics

    1)Under ideal conditions, if 300 J of work are required tolift a mass to a certain height, the same mass should provide ___ J to do work as it falls back to Earth. Can you please comment as to whether my answer of 300 J is correct? 2)___ is conserved

    asked by Shardi
  119. geometry

    your neighbors are purchasing a pool. their backyard is 20 yards wide and 30 yards deep. unfortunately the pool dealer will only deal in liter sized pools what is the biggest pool they can get and how many liters will it be?

    asked by victoria
  120. chemistry

    How much water do you need to add to 10 mL of a solution of HCl with a pH of 3 to change the pH to 6?

    asked by Anonymous
  121. algebra

    Suzie’s flower shop estimates that supplies costs for one month will be given by the polynomial 2x2 + 14x – 9. She estimates that utilities costs for one month is given by 12x – 3. Find and simplify an expression that would estimate Suzie’s total

    asked by Joe Hahira
  122. statistics

    An automobile shop manager times six employees and found that the average time it took then to change a water pump was 18 minutes. The SD of the sample was 3. Find the 99% of the interval of the true mean.

    asked by katelyn
  123. math

    Suppose 80% of citizens in Singapore are smokers. During a year, 50% of smokers suffer from at least one respiratory disease, but only 10% of non-smokers suffer from at least one respiratory disease. Suppose a citizen in Singapore is drawn randomly. Let S

    asked by Paula
  124. math

    Find the rule? In Out 2 1/2 3 3/4 5/6 5/24 2/3 1/6

    asked by hamza
  125. Business

    Which economic system is the best solution for handling a crisis of epic proportion?

    asked by Tanya
  126. physics

    A cylindrical rod( length L, radius R and density d) is dipped vertically in to a liquid. the rod is connected by a wire to a balance that measures the force to lift the rod. the contact angle between rod and liquid is θ. If rod is partially immersed so

    asked by kinjal
  127. math

    Obesity is defined as a body mass index of 3 kg/m2 or more. A 95% confidence interval for the percentage of U.S. adults aged 29 years and over who were obese was found to be 22.4% to 22.5%. What was the sample size?

    asked by katelyn
  128. Algebra 1

    What is the answer to 6t^+2-4t-3t+2? And please explain the steps of how to solve this. The directions say to factor each polynomial.

    asked by Blake
  129. pre-algebra

    find the volume of a pyramid 9in.by9in. by3in.round to the nearest tenth

    asked by alfred
  130. social studies

    what are two homework questions about pope leo III????

    asked by andrea
  131. statistics

    a machine used in a production process is set up correctly 97% of the time. Given that the machine is set up correctly, only 5% of the items it produces are defective, while 95% are not defective. On the other hand, if the machine is set up incorrectly,

    asked by Anonymous
  132. chemistry

    to drbob222: the book says that the naclo grams are equal to 2.4. how did they come up with that from the Henderson hesselbalch equation?

    asked by sam
  133. Literature 1010

    Papers that are inadequately developed often contain repetition and wordy generalities

    asked by Alex
  134. physics

    1)The increase in potential energy of any system is equal to the output ___. I still have no idea. 2) The path that an object follows as it is raised does not affect the ___ of the object. Could it possibly be "final kinetic energy"?

    asked by Kriti
  135. calculas

    Hydrocodone bitartrate is used as a cough suppressant. After the drug is fully absorbed, the quantity of drug in the body decreases at a rate proportional to the amount left in the body, with constant of proportionality . Suppose that the half-life of

    asked by calculas
  136. Math

    adding (1/4x^2-1/6x-3/8)+(1/4x^2-1/4x-1/2)

    asked by Jackster
  137. physics

    When you take your 1000-kg car out for a spin, you go around a corner of radius 57 m with a speed of 11 m/s. The coefficient of static friction between the car and the road is 0.88. Assuming your car doesn't skid, what is the force exerted on it by static

    asked by Randy
  138. Calculus 12th grade (double check my work please)

    2- given the curve is described by the equation r=3cos ¥è, find the angle that the tangent line makes with the radius vector when ¥è=120¨¬. A. 30¨¬ B. 45¨¬ C. 60¨¬ D. 90¨¬ not sure A or D 2.) which of the following represents dy/dx when

    asked by anon
  139. stats

    you are given the probabilities listed below P(A)= 0.25, P(B) = 0.30, P(C)=0.55, P(A&C) = 0.05, P(B&C)=0, P(B/A)=0.48. A) ARE A AND B INDEPENDENT? B) FIND P(A&B) C) FIND P(A OR B) D) FIND P(A/B) E) ARE B AND C MUTUALLY EXCLUSIVE EVENTS? F) ARE B AND C

    asked by Anonymous
  140. math

    solve each equation n^2-16=0

    asked by Anonymous
  141. Calculus

    Find the derivative of f(x)=e^(sin(1))+(sin(1))^x

    asked by Abigail
  142. Chemistry

    Iron is obtained from iron ore according to the following reaction: Fe2O3+CO---> Fe+CO2 (unbalanced). a. Assuming the blast furnace is 90.0% efficient in recovering the iron, what is the actual mass of iron obtainable from a ton of ore? b. What is

    asked by K
  143. Math

    There are 256 students in this outstanding 7th grade class. How many scoops of ice cream would have to be used in each cone in order to make a different cone for each person?

    asked by Tina
  144. maths

    a pyramid has a spuare base with side length 20.a right circular cylinder has a diameter of 10 and a length of 10.the cylinder is lying on its side,completely inside the pyramid.the central axis of the cylinder lies parallel to and directly above a

    asked by jo
  145. Chemistry

    What are 3 possible reasons why a percentage recovery might be low? And what are 3 possible reasons why a percentage recovery might be well over 100%?

    asked by K
  146. Trigo

    From a window of a building A, the angle of elevation of the top of building B is 35 degrees and the angle of depression of the bottom of building B is 20 degrees. If the buildings are 25m. horizontally apart, Compute for height of the window from the

    asked by Elmo
  147. computer Science (need answer ASAP)

    Write a complete C# program that displays a menu comprising of the followings: Main Menu 1) Calculate Fuel Consumption 2) Calculate Weekly Wages 3) About This Program 4) Exit Program Enter your Choice: Calculating Fuel Consumption When the user chooses

    asked by Will
  148. sociology

    what sociological pattern of influences might encourage a person to cheat or prevent them from cheating

    asked by Anonymous
  149. geology

    Given a scale of 1:24,000: A. What is the ground distance in feet represented by three inches on the map? 72000in 6000ft B. What is the ground distance in meters represented by 5 cm on the map? 120meters C. How about the ground distance in kilometers

    asked by karen
  150. MATH

    Wendy answered 85% of the questions on her history test correctly. There were 40 questions on the test and all the questions had equal value. How many questions did Wendy NOT answer correctly on her test?

    asked by PLEASE HELP
  151. Algebra/geometry

    a rectangle has a width of 4 cm less than it's length. if a new rectangle is formed by increasing the width 5 cm and decreasing the length 3 cm, the area of this resulting rectangle is 177 cm squared. what are the dimensions of the original rectangle?

    asked by Bill
  152. physic

    anyone can suggest a method to determine specific heat of non-volatile liquids?

    asked by yuss
  153. Math

    What is the shape of the schoolyard if four sides measure 40feet each and the fifth side measures 50 feet?

    asked by Melissa
  154. college subjeet physics

    a100 grams bullets is fired from a 10kg gun with a speed of recoil of the gun

    asked by ayesha khan
  155. business ethics

    Ethics systems table

    asked by rob
  156. Physics

    A driver entering the outskirts of a city takes her foot off the accelerator so that her car slows down from 90 km/h to 50 km/h in 10 s. Find the car's average acceleration.

    asked by Emily
  157. Chemistry

    Hi DrBob, Sorry about that, I wasn't very clear! Can someone please help me complete these calculations for my lab; I am having some trouble. A. Standardization of Na2S2O3 -Mass of KIO3 in 100mL = 0.09600g -Calculate Molarity of KIO3= ? Please check:

    asked by Bryant
  158. physics

    A truck sounds its 810 hz horn as it drives outside a house at 30mph. But the occupant's ear detects a frequency of 780hz. What is the temperature of the air at this location?

    asked by steve
  159. Algebra

    Go-Carts You and three of your friends are going to race go-carts. The last time you went, you had a coupon for $3 off each admission and paid $48 for the 4 admissions. What was the total price without the coupon? You pay the regular price this time and

    asked by Vanessa
  160. marketing

    Identify the strategy decisions a marketing manager must make in the Price area. Illustrate you answer for a local retailer.

    asked by Monica
  161. Chemistry

    Determine the density (in g/mL) of a liquid given: A beaker was weighed at 90. g, then 413.5mL of liquid was added and the new weight was 795 g.

    asked by Oscar
  162. Chemisty

    The Specific heat of a substance is the energy (joules) required to raise one gram of substance by one degree celsius (units J/g °C). Heating 225.0 cm3 of a solid from 36.1 °C to 74.3 °c takes 35850 J of energy. The density of the solid at 36.1 °C is

    asked by Oscar
  163. MATH

    is there anyway that a diagram or something can be drawn or pasted into the question box for a math problem?

    asked by Gemma
  164. PHYSICS

    A box is lifted with a pry bar, by slipping the bar under the box and lifting up on the bar. If the pry bar is 2m in length and it is grasped at the end, and the box is located at the opposite end, the fulcrum, with its center of gravity at a distance of

    asked by DMITRIC
  165. Chemistry

    13.1 + (19.32 - 8) = ? I know the answer is 24.42 but it says the answer has to be to the correct number of significant figures. so would that make it 24.5 or have I got that wrong

    asked by Oscar
  166. physics

    how high does a stone rise if it initially thrown at a rate of 15m/s?

    asked by Tesfaye
  167. Chemistry

    13.1 + (19.32 - 8) = ? I know the answer is 24.42 but it says the answer has to be to the correct number of significant figures. so would that make it 24.5 or have I got that wrong

    asked by Oscar
  168. chemistry..

    to drbob222 ok, the pka (hclo) = 7.54 the ph = 7.35 this problem was under "preparing a buffer" section

    asked by sam
  169. geometry

    Can you prove ABCD is a parallelogram based on the given information? Explain. Given: x = 5, y = 4 Prove: ABCD is a parallelogram. A. The figure is a square. To be a parallelogram, it would have to have pairs of opposite congruent sides, not just congruent

    asked by Kate
  170. Chemistry

    13.1 + (19.32 - 8) = ? I know the answer is 24.42 but it says the answer has to be to the correct number of significant figures. so would that make it 24.5 or have I got that wrong

    asked by Oscar
  171. Geometry

    Given circle A with circumference 20 pi and the length of arc KD equal to 10/3 pi. Find the area of the shaded region. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Is there any way I can post a diagram?

    asked by Gemma
  172. world history

    what was the reason for expansion of slave trade in the 17th century?

    asked by Tesfaye
  173. chemistry

    NH3(aq)+N2H4(aq)--->.....?

    asked by pepy
  174. English! Pleease help

    Hey guys this is about my previous question: I have trouble finding two texts that DISPLAY intolerance against gender, sexual activity, race/culture, disabled people etc. So, for instance a poem about the hatred for black people or the way the a 'Ku Klux

    asked by Shivi
  175. The world History

    does anyone know the question to exam 007681 & 007682

    asked by Peggy
  176. chemistry

    poem of chlorine

    asked by Anonymous
  177. Maths

    Basically there is this graph with the equations: x = cos t + 2 sin t and y = sin 2t (o

    asked by Jennifer
  178. English

    I'm finding it difficult to correct these sentences. I hope you can help me check them.Thank you. 1)In 19th-century the greater part of black slaves was born in America though they were originally deported from West Africa. 2)They worked for white people

    asked by Mike
  179. chemistry

    What is the hybridization of trioxo nitrate v ions ?

    asked by adebayo
  180. physics

    A 5-g marble, released form rest, was allowed to roll on a ramp whose lower end is 25 cm from the floor. When it left the ramp, it behaved like a body in projectile motion. What was the horizontal velocity of this marble when it left the ramp? With what

    asked by kik
  181. math

    a rectangle has a perimetr of 30m, if the length is at least twice the width,find the range of possible values of the width of the rectangle.

    asked by me
  182. math

    Michel wants to buy his mother handmade chocolates for Mothers Day. He has $15.oo to spend. The price of each chocolate is given below. Fudge $0.60 NutClusters $0.75 Truffles $0.80 Determine 4 possible combination where the total cost is 14.80 please help,

    asked by Vanessa
  183. diversity

    The instructional strategy that works best to give a child from a culturally different background a sense of security and mastery is

    asked by Anonymous
  184. science

    a worker pushes a box with a horizontal force of 50 N over a level distance of 5m. If a frictional force of 43 N acts on the box in a direction opposite to that of the worker, what was the net work done to the box?

    asked by KayKay
  185. critical thinking

    have a critical spirit means one is a cynic

    asked by Anonymous
  186. critical thinking

    critical thinking habits of mind are always postive

    asked by Anonymous
  187. Finance

    if an investor is contemplating purchasing long-term securities,what are the factors he/she should take into consideration in selecting among government bonds,semi government bonds or corporation bonds?

    asked by baoni
  188. computer fun

    My sister has no websites to go to for fun.She is 10 so what do you suggest?

    asked by Joe
  189. critical thinking

    calling on people to be systematic means that everyone must think the same

    asked by Anonymous
  190. critical thinking

    peolpe with strong anayticity are able to forsee the consequences of options and events

    asked by Anonymous
  191. trig

    with its arm fully extended to a length of 16ft, the maximum height that a man lift can reach is 18ft. The lowest height is 4ft, what is the position where the arm of the lift is horizontal. a) if a man gets on the lift and the arm is lifted through an

    asked by christianah
  192. accounting

    please help to get the correct of questions beloww..thanks i hope you can help me thanks ang god bless you always. 1.the cost-benefit constraint 2.importance of financial accounting 3.explain nuetrality and how can you say if an accounting information is

    asked by jessie
  193. geometry

    Circle O above has a circumference of 240 cm and arc XW has a length of 60 cm. What is the measure of the central angle associated with arc XW?

    asked by jake
  194. Math

    Find the probability of: a) Rolling a three OR a six with a single die Answer: P(3 U 6)= n(3U6)/n(S) = 3+6/6 = 9/6 reduced: 3/ b) Dealing an ACE OR a FACE CARD from a standard deck Answer: P(A U F)= 4/52 + 12/52 = 4/13 2. A 5-committee is to be chosen from

    asked by Jacob
  195. spanish

    In our own national Capitol, many homes now are owned by foreign governments for their ambassadors homes and offices.

    asked by griffin
  196. history

    i) who built first sarai ii) custom house is

    asked by prabhpreet singh
  197. Math

    There are 7 notes of "A" on a standard piano. When the first A is struck, the string associated with the key vibrates 55 times per second. The next A above the given A vibrates twice as fast. An exponential function with a base of two is used to determine

    asked by Anonymous
  198. Algebra

    Gloria has a gallon of paint to cover 500 square feet of drywall. She pointed out that for 10,000 square feet she needs 20 gallons of paint. Let's say the output (the range) is going to tell us how many gallons of paint to buy at the hardware store. The

    asked by Jada
  199. Statistics

    A fair 20-sided die is rolled 60 times, and the value of chi-square is computed using expected counts of 3 for each face. If this process is repeated many times, the shape of the distribution of the values of chi-square should be... A uniform B bimodal C

    asked by Graciela
  200. History

    Can someone please help me with these four questions? My first is to discuss a little about American Imperialism in the Nineteenth Century. My second question, why was this policy adopted? My third question, how was it rationalized? My fourth question is

    asked by David
  201. Advance Finance

    The Howland Carpet Company has grown rapidly during the past 5 years. Recently, its commercial bank urged the company to consider increasing its permanent financing. Its bank loan under a line of credit has risen to $250,000, carrying an 8 percent interest

    asked by Kim
  202. accounting

    please help me to get the answers choices below just choice the letter provied. thanks a lot 1.Asset would be increased by : a.Debit to Prepaid Insurance b.Debit to expense c.Credit to Cash d.Debit to Notes Payable 2.Failure to record a bill from Meralco

    asked by jessie
  203. accounting

    Capwell Corporation uses a periodic inventory system. The company's ending inventory on December 31, 2011, its fiscal-year end, based on a physical count, was determined to be $326,000. Capwell's unadjusted trial balance also showed the following account

    asked by kay
  204. Physics

    Cart A, of mass 3.00 kg, approaches and collides with cart B, which has a mass of 7.00 kg and is initially at rest. When the springs have reached their maximum compression, a. cart A has come to rest relative to the ground. b. both carts have the same

    asked by Ana
  205. choice

    Making responsible choice for healthy and balanced lifestle

    asked by Brightness
  206. Physics

    A heavy rifle initially at rest fires a light bullet. Which of the following statements about these objects is true? A. The bullet and rifle both gain the same magnitude of momentum. B. The bullet and rifle are both acted upon by the same average force

    asked by Ana
  207. Physics

    Suppose a crate of mass 2.8 kg is placed on the plank in the figure below at a distance 5.1 m from the left end. Find the forces exerted by the two supports on the plank. (The mass of the plank is 12.0 kg.) Left Support N Right Support N The plank set on

    asked by lala
  208. world history ap

    Tomorow I have a dbq essay due to my teacher he is mainly concerned about our thesis statment.The question is What are Han and Roamn attitudes towards technology?he wants 1 sentence with three attitudes .help????

    asked by maxii
  209. english

    i need help with this english essay i'm writing. I need help finding some pathos, ethos, and logos for the book lord of the flies.

    asked by Carrie
  210. history

    rationale for imperialism in the era 1890–1910 included all of the following ideas EXCEPT: A. American ideas and institutions were superior to those of inferior nations. B. the United States needed a vast buffer zone to offset communist expansionism. C.

    asked by sharice
  211. geometry regular polygon

    a=? s=10.5cm A= 19,887.5cm squared Pentagon A=asn/2 19,887.5cm=a*10.5*5/2 39775=52.5a a=757.61cm? am i correct? regular nonagon a=9.6cm A=302.4cm squared find perimeter thanks!

    asked by Skye
  212. Density of a CUSO4 solution

    I need to determine the density of a CUSO4 solution of 1% concentration from a 10cc pipette volume.

    asked by Lorraine
  213. history

    i) who first built sarai ii) custom house is

    asked by anonymous
  214. chemistry

    calculate the % (w/v) for the following solution: 28.0 g of solute is dissolved in 200.0 ml of water to give the solution with a density of 1.10 g/ml

    asked by ned
  215. Industrial Hygene

    What volume will 73 g of dry ammonia gas occupy at 11 degrees C and 720 mm Hg? How much air is needed to dilute the ammonia to 10 ppm ?

    asked by CCBC
  216. physics

    Two carts, one twice as heavy as the other, are at rest on a horizontal frictionless track. A person pushes each cart with the same force for 4.00 s. If the magnitude of the momentum of the lighter cart after the push is P, the magnitude of the momentum of

    asked by Ana
  217. math

    Write the number in scientific notation. 89,000,000,000 A 4-minute egg is cooked for what fraction of an hour? (1 hour = 60 min)? ADD 4 7/9+ 5 2/9 Erika spent 5/6 hr on her computer visiting the history channel and the discovery channel websites. She spent

    asked by Anonymous
  218. calculus

    if the region enclosed by the y-axis, the line y=2 and the curve y=the square root of x is revolved about the y-axis, the volume of the solid generated is????

    asked by bob
  219. Density of CUSO4

    How can I find out the mass measurement?

    asked by Lorraine
  220. history

    Who tended NOT to sympathize with the Allies in the first years of the war? A. President Wilson and most of his advisers. B. German-American immigrants. C. Those who felt closer cultural ties with British and French culture. D. Americans who felt a closer

    asked by sharice
  221. math

    Tim needs to apply 21/2 gallons of herbicide per acre of soybeans. How many gallons of herbicide are needed for 360 acres? A worker has readings that take 22/3 minutes each to read and record. How many readings can be completed in 192 minutes? A grocer

    asked by BUBBA
  222. calculus

    integrate xsin(2x)dx=

    asked by bob
  223. Chemistry

    A sample of air has a volume of 140.0 mL at 67 degrees Celsius. At what temperature would its volume be 50.0 mL at constant pressure?

    asked by Nick
  224. Density of CUSO4

    How do I find out the mass measurement?

    asked by Lorraine
  225. Business Writing

    What comes first the business letter, the interoffice memorandum or the email

    asked by Sheila
  226. Chemistry

    The pressure exerted on a 240.0 mL sample of hydrogen gas at constant temperature is increased from 0.428 atm to 0.724 atm. What will the final volume of the sample be?

    asked by NDC
  227. math

    array for 46x 25

    asked by Anonymous
  228. Density of CUSO4

    I don,t know if this helps but the Soln of CUSO45H2O is 1%, the mass solution is 100g and the mass of CUSO4 5H2O is 1g.

    asked by Lorraine
  229. Calculus 1

    A given figure shows a rectangle inscribed in an isoceles right triangle whose hypotenuse is 18 units long. Express the y coordinate of P terms of x

    asked by Anonymous
  230. history

    Before the Spanish-American War, yellow journalism: A. endorsed a policy of isolationism. B. wrote editorials that criticized American imperialism. C. refused to write about foreign affairs. D. used sensationalism to stir up war fever. I think the answer

    asked by sharice
  231. algebra

    Factor 2x squared minus 5x minus 3.

    asked by sam
  232. algebra

    In base 5, how many two digit numbers are there?

    asked by john
  233. Genetics

    Question 11 (1 point) Save As the degree of relatedness within a population increases, the level of inbreeding in that population also increases. As relatedness and inbreeding go up, individuals become more similar genetically and therefore genetic

    asked by Rachel
  234. physics

    A 13 N horizontal force pushes a block weighing 4.5 N against a vertical wall (Fig. 6-26). The coefficient of static friction between the wall and the block is 0.68, and the coefficient of kinetic friction is 0.35. Assume that the block is not moving

    asked by karim
  235. physics

    In an auto accident, a car hit a pedestrian and the driver then slammed on the brakes to stop the car. During the subsequent trial, the driver's lawyer claimed that the driver was obeying the posted 35.0 mph speed limit, but that the limit was too high to

    asked by mary
  236. computers

    What do you think would be the best way to use Flash when designing your website if you were going to use it?

    asked by Anonymous