Questions Asked on
June 10, 2010

  1. chemistry

    Write the formula of the conjugate base for acid H3PO4 and what is the name of the base Write the formula of the conjugate base for acid H3O+ and what is the name of the base ..........and how can i tell how to get it? i am lost

    asked by michelle
  2. Geometry

    If [angle]D is a right angle and lines PN, FG, and BD are parallel to each other, prove [angle]SPN ~ [angle]SFG ~ [angle]SBD

    asked by Shadi
  3. Chemistry

    CuSO4(aq) + 4NH3(aq) → [Cu(NH3)4]SO4(aq) I know that adding nitric acid will reverse the reaction. But what is the actual chemical equation? [Cu(NH3)4]SO4(aq) + HNO3(aq) --> ???

    asked by elin
  4. physics

    Superguy is flying at treetop level near Paris when he sees the Eiffel Tower elevator start to fall (the cable snapped). His x-ray vision tells him Lois LaTour is inside. If Superguy is 1.00 km away from the tower, and the elevator falls from a height of

    asked by brandon
  5. Algebra1

    Please let me know if these are correct. 1. Find: 10% of 30 3 2. Find: 10% of 100 10 3. Find: 20% of 50 10 4. Find: 20% of 100 20 5. Find: 50% of 50 25 6. Find: 150% of 300 450 7. Find: 15% of 56 8.4 8. Find: 27% of 92 24.84 9. Find: 32.8% of 106 34.768

    asked by y912f
  6. pre calc

    An initial investment of $12,000 is appreciated for 5 years in an account that earns 7% interest, compounded quarterly. Find the amount of money in the account at the end of the period

    asked by joanie
  7. CHM 152

    At 20oC, a 2.32 M aqueous solution of Ammonium Chloride has a density of 1.0344g/ml. WHat is the molality of Ammonium Chloride in the solution? The formula weight of NH4Cl is 53.50 g/mol?? I am not sure how to incorporate the density into the problem to

    asked by Car
  8. Algebra

    for the follwong equation, state the value of the discriminant and then describe the nature of the solutions: 5^2+9x+2=0

    asked by Blake
  9. chemistry

    NaCl (aq) + NH3(aq) + H2O(l) + CO2(s) --> NH4Cl(aq) + NaHCO3(s) because they are relatively cheap, sodium chloride and water are typically present in excess. what is the expected yield of NaHCO3 when one performs such a synthesis using 10.0 g of ammonia

    asked by Naila
  10. Math

    In a right triangle I need to find the length of the missing side. If.. a = ? b = 1 c = sqrt(5) I would know what to do if the square root wasn't there or if it were a perfect square but it's not, please help... (P.S. if I need to I have to keep it in

    asked by Punkie

    According to the Central Limit Theorem, The traditional sample size that separates a large sample size from a small sample size is one that is greater than 100 30 500 20

    asked by John
  12. physics

    A jet airliner moving at 500 mph due east moves into a region where the wind is blowing at 120 mph in a direction north . What is the new velocity and direction of the aircraft?

    asked by brandon
  13. physics

    A plane flies at 1.25 times the speed. It's sonic boom reaches aman on the ground 1.00 min after the plan passes directly overhead.What is the altitude of the plane? Assume the speed of sound to be 330m/s.

    asked by J
  14. english

    where is the simple subject and compound subject in this sentence?They are projecting a sales increase of 14 percent.

    asked by ashlie
  15. chemistry

    n the reaction 2CO(g) + O2(g) ® 2CO2(g) what is the correct expression of the rate?

    asked by qwatissia
  16. physical science (light)

    1. An object 5 millimeters high is located 15 millimeters in front of a plane mirror. How far from the mirror is the image located? A. 5.0 millimeters B. 7.5 millimeters C. 15 millimeters *** D. 30 millimeters 2. Which of the following values represents an

    asked by Mari
  17. Math

    A diameter that is perpendicular to a chord bisects the chord. True or False

    asked by Courtney

    Can a frequency distribution have overlapping classes? i would say no ,but I believe i am wrong.

    asked by John
  19. physics

    Monochromatic light with a wavelength of 5.0 E -7 meter passes through two narrow slits, producing an interference pattern on a screen 3.0 meters away. The first order bright band lines 2.0 E -2 meters away from the central bright maxima. What is the

    asked by casey
  20. algebra

    what are the factors of: 6g8-3g4-9g2

    asked by Fantasia W.
  21. Chemistry

    Record the amount of heat needed to change phases for water-ice to steam using graphical analysis. Is there a one accurate amount of heat needed to change phases, I thought it varied depending the problem... Would the question be asking for the heat needed

    asked by Amy~
  22. Maths

    Express the sum using summation notation: 1 - 1/2 + 1/3 - 1/4 + 1/5 - ... (to 3n terms) If I'm doing this right so far, with k=1 (the number on bottom of the sigma), the equation after the sigma would be ((-1)^(k+1)) / k I'd be able to figure out the term

    asked by Anonymous
  23. Precalculus

    The burial cloth of an Egyptian mummy is estimated to contain 57% of the carbon-14 it contained originally. How long ago was the mummy buried? (The half-life of carbon-14 is 5730 years.)

    asked by Miguel
  24. physics

    A ball is rolled horizontally off a table with an initial speed of 4.0 m/s. A stopwatch measures the ball's trajectory time from table to the floor to be 0.34 s. What is the height of the table? (g = 9.8 m/s2 and air resistance is negligible)

    asked by jack
  25. Precalculus

    The burial cloth of an Egyptian mummy is estimated to contain 57% of the carbon-14 it contained originally. How long ago was the mummy buried? (The half-life of carbon-14 is 5730 years.)

    asked by Miguel
  26. physics

    9. A stone is thrown at an angle of 30° above the horizontal from the top edge of a cliff with an initial speed of 19.6 m/s. A stop watch measures the stone's trajectory time from top of cliff to bottom to be 6.7 s. How far out from the cliff's edge does

    asked by sam
  27. physics

    piston 1 has a diameter of 0.25 in; pistol 2 has a diameter of 1.5 in. In the absence of friction, determine the force necessary to support the 500 lb weight.

    asked by Jackie
  28. Geometry

    A regular hexagon is made from equilateral triangle by cutting along the dotted lines and removing the three smaller triangles. if triangle has a perimeter of 18, what is the perimeter of hexagon?

    asked by DJ
  29. physics

    An 9.0 m, 210 N uniform ladder rests against a smooth wall. The coefficient of static friction between the ladder and the ground is 0.75, and the ladder makes a 50.0° angle with the ground. How far up the ladder can an 890 N person climb before the ladder

    asked by laurie
  30. poetry

    write a acrostic poem on "spaceship"

    asked by nadsa
  31. chemistry

    What is the name of this compound CH3CHCH2CH3 ...| ...OH (this should fall directly under "CH")

    asked by Mary
  32. math

    Two fraternities, Sig Ep and Ep Sig, plan to raise money jointly to benefit homeless people on Long Island. They will sell Yoda vs. Alien T-shirts in the student center, but are not sure how much to charge. Sig Ep treasurer Augustus recalls that they once

    asked by John
  33. math

    Two fraternities, Sig Ep and Ep Sig, plan to raise money jointly to benefit homeless people on Long Island. They will sell Yoda vs. Alien T-shirts in the student center, but are not sure how much to charge. Sig Ep treasurer Augustus recalls that they once

    asked by John
  34. physics

    Suppose a 64-kg boy and a 49-kg girl use a massless rope in a tug-of-war on an icy, resistance-free surface. If the acceleration of the girl toward the boy is 3.0 m/s2, find the magnitude of the acceleration of the boy toward the girl.

    asked by Anonymous
  35. english

    I need help. I need to revise any run-on sentences. The first one is this. Not sure if these are correct. Death Valley National Monument located in Southern California and Nevada, is one of the hottest place on earth. Temperatures there have soared as high

    asked by Roger
  36. physics

    A runner hopes to complete a 10,000 m race in a time of 30 minutes. After running at a constant speed for exactly 27 minutes, there are still 1100 m to go. The runner then accelerates at 0.2 m/s2 for how many seconds in order to achieve the desired time?

    asked by jane john
  37. chem

    The label on a one-pint bottle of water lists the following components. If the density is the same as pure water and you drink 2 bottles of water in one day, how many milligrams of each component will you obtain? calcium 28 ppm, fluoride 9ppm, magnesium 14

    asked by sandra
  38. Counsmer Math

    Carlos Martin received a statement from his bank showing a balance of $56.75 as of March 15. His checkbook shows a balance of $87.37 as of March 20. The bank returned all the cancelled checks but two. One check was for $5.00 and the other was for $13.25.

    asked by Maria
  39. chem

    Calculate the specific heat (\rm{J/g \; ^\circ C}) for a 21.5 g sample of a metal that absorbs 685 J when temperature increases from 42.1^\circ C to83.2^\circ C.

    asked by andy
  40. science

    I was wondering if you could help me with my homework so how does sunlight get into a leaf that's part of a plant please help me![good bye]

    asked by secret agent 784.
  41. Math

    The measure of an angle formed by two secants intersecting inside the circle equals a.½ the sum of the intercepted arcs b.½ the difference of the intercepted arcs c.½ the measure of the intercepted arc I need help please!

    asked by Courtney
  42. Algebra

    4 sqrt 32 -3 sqrt 2=

    asked by Greg
  43. Algebra HELP:(

    Use the discriminant to determine how many real-number solutions the equation has. 36x2 - 12x + 1 = 0 How do I do this?

    asked by bart
  44. Math

    What is the minimum, lower quartile, upper quartile, maximum of these numbers? 45 52 52 68 71 71 75 77 82 84 89 90 90 94 96

    asked by Dawn
  45. Algebra1

    Please check these 15. Simplify the product using FOIL: (4x+3)(2x+5) 6x^2 + 26x + 15 16. Given the set of data 2, 6, 3, 8, 5, 4, 2, what is the mean? 4.28 41. Find 60.5% of 8,125. 4,915.625 54. Find 45% of 125 56.25 68. Evaluate: (5.0 x 10^3) x (4.0 x

    asked by y912f
  46. AED 204

    Here is the scenario plus the questions. Jenny Reid is a middle-school teacher in a suburb of Atlanta. Her sixth-grade students are primarily majority group students from middle-class backgrounds. The children in her class are good students, well

    asked by Rayna
  47. Geometry HELP

    Find the area of the parallelogram. (base(s)=10cm, slant/side length(s)=6cm, h=? and the angle measure is 60degrees. a.)15√3 cm^2 b.)30√3 cm^2 c.)15√2 cm^2 I think it's 30√3 cm^2.

    asked by Ariel
  48. math

    how to make a tally chart for the number of students in the third, fourth and fifth grade classes 26,25,27,27,26,28,27

    asked by jay
  49. Math

    1.Radii of congruent circles are equal. True or False 2.The measure of an angle formed by two secants intersecting outside the circle equals a. ½ the sum of the intercepted arcs b. ½ the difference of the intercepted arcs c. ½ the measure of the

    asked by Courtney
  50. Chemistry

    How many liters of O2 can be produced by letting 12.00 moles of KClO3 react?

    asked by Nicole
  51. Intermediate Algebra

    Given logb3 = 0.792 and logb5 = 1.161. If possible, use the properties of logarithms to calculate values for the following show your work logb 1/3

    asked by Kris
  52. physics

    The highest mountain on Mars is Olympus Mons, rising 38569 meters above the Martian surface. If we were to throw an object horizontally off the mountain top, how long would it take to reach the surface? (Ignore atmospheric drag forces and use gMars = 3.72

    asked by brandon
  53. A movie question

    Has anyone seen the movie Gatacca? What has the title of that movie have to do with the genetics and stuff? What is the significance of that title?

    asked by Sara
  54. CHM 152

    The freezing point of an aqueous solution of glucose was measured to be -1.52 oC. What is the osmotic pressure, in atm, of 100 mL of this solution at 25.0 oC? (Kf = 1.86 oC/m) When I calculated it out I got 16.79 atm but the answer was wrong don't know

    asked by Car
  55. Chemistry

    Hello guys, can you please answer this question with explanation and formula because I'm absolutely lost :( What is the Cu2+ concentration at 25°C in the cell Zn(s)½Zn2+(1.0 M)½½Cu2+(aq)½Cu(s)? The cell emf is 1.03 V. The standard cell emf is 1.10 V.

    asked by ill matic
  56. Physics

    An airplane is flying North with a velocity of 22 m/s. A strong wind is blowing East at 50 m/s. What is the airplane's resultant velocity (magnitude and direction)?

    asked by Desirae
  57. Chemistry

    I don't understand this: For the temperature vs time graph for heat and changes of state. The graph starts at -2.1 degrees C The heat of fusion is at 2.0 degrees C The heat of vaporization is on 101.0 degrees C. The graph ends at 103.0 degrees C. So to get

    asked by Amy~
  58. child growth development

    Researchers have concluded that A. the proportion of REM sleep to N-REM sleep is similar in infants and adults B. REM sleep provides needed brain stimulation to neonates C. REM sleep is mostly absent in neonates D. the proportion of REM sleep to N-REM

    asked by jay
  59. Chemistry

    I don't get how the intermolecular forces (Hydrogen bonding) relates to the heating curve of water. I read some stuff on intermolecular force for Hydrogen bonding and it said that the force between water molecules raise the boiling point of water. So would

    asked by Amy~
  60. Statistics

    Which of the studies below would be analyzed using a t-test for dependent means a. The study of the effectiveness of a new medication given to the same subjects at two points in time b. A study comparing men and women on a test of motor function c. A study

    asked by Lynne
  61. math

    what is the inverse of g(x)= 2/3x+4?

    asked by erick
  62. English

    1. You can grow several centimeters in a short time. 2. You can grow by several centimeters in a short time. (Are both OK? Is 'grow' a transitive verb or an intransitive verb? Is 'by' missing after 'grow' in #1?)

    asked by rfvv
  63. math

    Two fraternities, Sig Ep and Ep Sig, plan to raise money jointly to benefit homeless people on Long Island. They will sell Yoda vs. Alien T-shirts in the student center, but are not sure how much to charge. Sig Ep treasurer Augustus recalls that they once

    asked by John
  64. physics

    A ball is launched from ground level at 31.8 m/s at an angle of 35° above the horizontal. How far does it go before it is at ground level again? A) 14 m B) 21 m C) 43 m D) 86 m E) 97 m

    asked by jack
  65. math

    Triangle ABD in the diagram has a right angle A and sides AD = 4.9cm and AB = 7.0cm. side AB is extended to C so that ABC is a straight line. a) use pythagoras theorem in triangle ABD to find the length of BD. b)use trigonometry in triangle ABD to find

    asked by Kheladi Nep
  66. math

    Two cones have congruent radii and the altitude of one cone is twice that of the other. What is the ratio of their volumes? ( Options=1:4, 1:2 or 1:8) would it be 1:4

    asked by unknown
  67. math

    (a) A street guide for Belfast has a scale of 1:15 000. A walkway through the city is 2.4 km long. Find the length of the walkway on the map. Give your answer in centimetres. (b) Ormeau Park in Belfast has an area of about 25 cm2 on the same map. Calculate

    asked by Kheladi Nep
  68. Chemistry

    What is the formula for the expect products of these reactions. 1.....CH3 ........\ .........CH-CH2-CH2-Br+NaOH-> ......../ ........CH3 ...............catalyst 2. CH4+4Cl2------------->

    asked by Mary
  69. south pole expl.

    What are the accomplishments by Robert Scott in his two antarctic expeditions?

    asked by AL 92
  70. Finance

    Business Investment A firm of attorneys deposits $5000 of profit-sharing money at the end of each semiannual period for years. Find the final amount in the account if the deposits earn 10% compounded semiannually.

    asked by Anonymous
  71. Geometry HELP

    Using coordinate geometry to prove that the diagonals of a square are perpendicular to each other. Given: Vertices are at A(0,0), B(a,0), C(a,a) and D(0,a) Slope of AC=1; Slope of BD=-1 Type your proof. (someone plz help cuz i don't understand)

    asked by Ariel
  72. world history

    According to Procopius, two sixth century Christian monks undertook an elaborate smuggling operation to provide Byzantium with the knowledge to produce

    asked by Nina
  73. college physics

    find the frictional force exerted on a 20kg block pulled slowly over a horizontal floor using a rope which makes a 30 degree angle over the horizontal. the pulling force is 100N??? i found the Fn to be 146 N what do i do from there?

    asked by josh
  74. English

    When an animated cartoon was made of Animal Farm, it was given a happy ending. Animals everywhere hear that Napoleon has betrayed the cause of animalism. They join in a second revolution and succeed in overthrowing him. This leads to the establishment of

    asked by Anonymous
  75. geometry

    If an arc makes a central angle of 98 degrees is it a major or minor arc? Explain??

    asked by jennie
  76. chem

    Calculate the specific heat (\rm{J/g \; ^\circ C}) for a 18.5-\rm g sample of tin that absorbs 183 {\rm J} when temperature increases from 35.0 ^\circ \rm C to 78.6 ^\circ \rm C.

    asked by andy

    The area under a normal curve distribution is I have an answer of equal to one. is this correct?

    asked by John

    Consider a binomial random variable where the number of trials is 12 and the probability of success on each trial is 0.25. Find the mean and standard deviation of this random variable. I have a mean of 4 and a standard deviation of 2.25 is this correct

    asked by John
  79. English

    For my english ISU presentation, we are expected to present the thesis of our novel and relate our thesis to other mediums in our society today like poems, songs, movies, other novels. Anything like that. The novel i am doing is my sister's keeper by jodi

    asked by Sarah
  80. CHM 152

    The activation energy for a reaction is 37.6 kJ/mole. The rate constant for the reaction is 5.4 x 10-3 s-1 at 45 oC, Calculate the rate constant at 145 oC.

    asked by Car
  81. Algebra

    I understand that systems of equations can be solved by graphing or by using substitution or elimination. But I cannot think of any pros or cons so... What are pros and cons of each method?

    asked by Lynn
  82. Geometry HELP

    An isosceles triangle ΔABC has its altitude at the y-axis and its base at the x-axis. D is the midpoint of segment AC and E is the midpoint of segment CB. Given the coordinates A(-2a, 0), B(2a, 0), and C(0, 2b), determine the coordinates of midpoints D

    asked by Ariel
  83. INB

    3. Assignment: Lunch and Learn Presentation • Consider the following scenario: You have been asked by the director of your department to put together a Lunch and Learn Presentation wherein you present to your coworkers an introduction to the concepts of

    asked by Style
  84. Plz Check my Geometry (Urgent)

    ***I know I've posted this several times but it's like getting skipped and or no one has gone over it so I'm posting it one more time before I go to bed. I need to have these checked by tommorrow PLEASE!*** Out of 31 questions these are ones I struggled

    asked by Ariel
  85. college sci/241

    Think of some of your favorite foods when you were 10 years old. Are they still your favorites? Do you think you will be eating the same foods you eat today 20 years form now? What are some of the reasons dietary modifications may be needed in different

    asked by Nicole
  86. To all students posting math questions

    Please know that at least 3 of our frequently posting math tutors are away from their homes on trips. There are other very good tutors who are online, but less frequently. You'll need to be very patient.

    asked by Writeacher
  87. trig

    the scores on a 100 pt test are normally distributed with a mean of 80 and a standard deviation of 6. a student's score places him between the 69th and 70th percentile. what is his score?

    asked by cliff
  88. Science

    If neons atomic number is 10 how many electrons are in the outer energy level?

    asked by Melissa
  89. English

    I need hep writing an essay about the defects of two adults in Romeo and Juliet that caused their children's disobedience. What possible characters can I do, and what main ideas should I write for each character?

    asked by Emily
  90. Chemistry

    What class do the following organic compounds do each belong and what is the IUPAC name -- 1.........Br ........../ ......./\ ......|..|..(supposed to be a hexagon) .......\/ ........| Br 2. CH3CHClBr - I have 1-bromo-1-chlorothane, what is the class? 3.

    asked by Mary
  91. Math

    What would be the amount of compound interest on $8,000 invested for one year at 6%, compounded quarterly? Round your answer to the nearest dollar.

    asked by Anonymous
  92. chem

    how can i figure out how to calculate molecules to grams ?

    asked by ngugi
  93. child growth developnent

    In detecting poor visual acuity in a neonate, you can safely blame the A. Neonate's light sensitivity B. fact that myscular coordination for focusing takes practice C. likekihood that the infant hasn't developed visual trscking ability D. fact that babies

    asked by tina
  94. Social 30

    In one or two paragraphs, explain what should be more important to nations, self-interest or global interest? Answer in a paragraph, providing reasons.

    asked by Isaa
  95. chemistry

    Calculate the hydroxide ion conc. and the % ionization @20oC in a 1.25 M NH3 solution. The Kb for NH3 = 1.70x10-5 @20oC.

    asked by bob
  96. elementary

    You're an elementary teacher in a self-contained classroom. You've got a class of 29 lively sixth graders, and you've been struggling all year with classroom management. Damien, a larger than average boy, seems to resist your efforts at every turn. You

    asked by Anonymous
  97. Plz Check my Geometry(sOo0n)

    Out of 31 questions these are ones I struggled with. after the = sign is what I think the answer( except for #4, I don't know what to do at all), is so if I'm wrong can someone correct it with an explanation/formula with it please? 1.) Find the area of the

    asked by Ariel
  98. Statistics

    What does it mean when a researcher chooses the cutoff in a comparison distribution to be .01? a. It means that to reject the null hypothesis, the result must be higher than a z score of .01 b. It means that to reject the null hypothesis there must be less

    asked by Angela


    asked by HARNOOR SINGH
  100. math

    The distance d in Km to the gorizon can be estomated using the formula d= rootover13h, where h is the height above ground level, in meters of the observer. a)use the formula to find the distance to the horizon for an observer on the london eye, 135m above

    asked by Kheladi Nep
  101. Geometry HELP

    Find the volume of a regular hexagonal prism if the measure of one side of the base is 14 and the height is 10. a.)140√2 cm^3 b.)2940√3 cm^3 c.)140 cm^3 I was thinkin the answer is 140√2 cm^3

    asked by Ariel
  102. Plz Check my Geometry(sOo0n)

    Out of 31 questions these are ones I struggled with. after the = sign is what I think the answer( except for #4, I don't know what to do at all), is so if I'm wrong can someone correct it with an explanation/formula with it please? 1.) Find the area of the

    asked by Ariel
  103. Math

    What quadrants are x>0, x0, & y

    asked by Meghan
  104. (act practice)

    In the standard (x,y) coordinate plane, point M with coordinates (5,4) is the midpoint of AB, B has coordinates (7,3). What is the coordinate of A?

    asked by Megan L J
  105. Algebra

    The length of a rectangle is fixed at 13cm. What widths will make the perimter greater than 92 cm?

    asked by Linda
  106. Algebra1

    Please check these 25. If a dress were 20% off of the marked price of $32.00, how much would it cost? $25.60 26. Write 1,000,000,000 in scientific notation 1.0 x 10^9 27. (3.0 x 10^2) x (2.0 x 10^6) = ? 6.0 x 10^-4

    asked by y912f
  107. Finance

    If I open an account of a 1000.00 and it pays year interest at .08 How much will i have in a year?

    asked by Michelel
  108. bio

    A typical adult body contains 55 \% water. If a person has a mass of 70.0 kg, how many pounds of water does she have in her body?

    asked by andy
  109. algebra

    can u help me with a question

    asked by ty
  110. Math

    Could someone help me with this equation? Use the quadratic formula to solve the equation... 2x^2 - x = -10

    asked by Punkie
  111. English

    1. The next few years, you are growing in and out. 2. Over the next few years, you are growing in and out. 3. In the next few years, you are growing in and out. 4. During the next few years, you are growing in and out. (Which one is correct? Which one is a

    asked by rfvv
  112. English

    1. Sometimes, you want to be alone. (Is 'alone' an adjective or an adverb'?)

    asked by rfvv
  113. us history

    If the 13th, 14th, and 15th Amendments, which were passed almost 100 years earlier, guaranteed that African-Americans had the right to vote, why was legislation such as The Voting Rights Act of 1965 necessary?

    asked by tom
  114. Chemistry

    What is the IUPAC name and classify as primary, secondary or tertiary ..............__ 1. CH3CH2-O-/..\ .............\__/ 2. CH3 .......\ .......CH-CH2-CH2-OH ......./ ....CH3 3. CH3CH2CH2CH2CH2OH, i show this to be 1-Pentanol which is primary.

    asked by Mary
  115. Biology

    Can bacteria reproduce by spore formation?Or only binary fission?

    asked by Anonymous
  116. Algebra

    Amy paid $67.15 for a pair of running shoes during a 15% off sale. What was the regular price?

    asked by T
  117. Intermediate Algebra

    Rewrite the following as an equivalent logarithmic equation.Do not solve. Show your work. m^n=r

    asked by Kris

    If my p-value = .322 and my significant level is .05 , then; I cannot make a decision until my sample size is given. is the correct answer?

    asked by John
  119. economics

    what is absolute advantage of 200 lbs corn and 50 pigs

    asked by sand
  120. Chemistry 30

    According to the data booklet Cu(NO3)2 and Sn(s) are spontaneous Cu2+ being a strong reducing agent and Sn(s) being a strong oxidizing agent but according this lab:

    asked by Jenna
  121. Math Grade 12

    How do you expand this log expression? log(3x©÷¡îy/©ø¡î5z©÷)

    asked by Manni
  122. Chem Check

    The first law of thermodynamics is the application of the conservation of energy principle to heat and thermodynamic processes.

    asked by Amy~
  123. Algebra

    I am havine trouble with this problem will someone please help me The perimeter of a rectangle is 68m The length is 10 m more than twice the width. Find the dimensions

    asked by Princess
  124. Algebra 2

    Is the answer to: cosθ, if tanθ = 1 and 180° < θ < 270° ; (√ 2)/2 ?

    asked by Ana
  125. Analytical Chemistry

    advantages and diaadvantages of potentiometris titration

    asked by Johnson
  126. Physical Science

    Please use the Bohr model simulator at Michigan State University to complete the table below: initial orbital ending orbital Wavelength (nm) 3 2 4 2 2 434 2 410.2 7 2 397 4 3 5 3 Bohr Model Simulation McGraw-Hill (Java)

    asked by renea
  127. math

    A store marks up items 42.5% to allow for profit. If an item costs a store $24.40, what will its selling price be?

    asked by tee
  128. algorithms and logic

    i need an example of a peer review of the currency conversion test procedure exercises

    asked by marty
  129. Chemistry

    If I put the temperature is increasing would that be the same as going from -2.1 degrees Celsius to 100 degrees Celsius. OR would it be as the temperature is getting warmer??

    asked by Amy~
  130. Algebra1

    Please check these for me. 11. Find: 32 out of 38 in percentage 84.2% 12. Find: 41 out of 51 in percentage 80.3% 13. Find: 69 out of 70 in percentage 98.5% 14. Find: 32 out of 110 in percentage 29% 15. Find: 41 out of 40 in percentage 102.5% Thank you

    asked by y912f
  131. Algebra1

    45. Find your percent correct on a test if you received 61 points out of 69 possible. 88.4% 49. Find your percent on a test if you received 42 points out of 80 possible. 52.5% 50. Scientific notation is most effective when used with _____ a. very small

    asked by y912f
  132. algebra

    -d = 3 sqrt d - 2 a) {3} b) none c) {6} d) {3,6}

    asked by poo
  133. math

    what is the measure, in radians, of a central angle formed by cutting a circular pizza into 12 equal wedge shaped pieces?

    asked by angela
  134. geography

    what are the steps in finding a location?

    asked by bla
  135. chemistry

    A chemical problem may be presented to you in units of moles, mass, or volume. Which one of these can be directly used in your arithmetic no matter what the conditions are?

    asked by Lola
  136. science

    what causes some genetic disorders like sickle cell anemia

    asked by sean
  137. Cody

    With whom do the doctors identify charlie? by "whom" is referring to another person? I don't get this question. Please clarify. thanks.

    asked by english
  138. Algebra

    How long will it take for the population of a certain country to double if its annual growth rate is 1.5%? Round to the nearest year. Use the exponential growth model P(t) = P0e^kt

    asked by Kris
  139. 9th grade ENG

    in her room at the prow of the house where light breaks and the windows are tossed with linden. my daughter is writing a story i pause in the stairwell , hearing from her shut door a commotion of typewriter- keys like a chain hauled over a gunwale. young

    asked by brooke
  140. pre-calculus

    If (1)(2) + (2)(3) + ... n(n+1) = n(n+1)(n+2)/3 complete the inductive step of its proof: 1(2) + 2(3) + ... k(k+1) + (k+1)(k+2) I have no idea what to do.

    asked by Jesse
  141. Social 30

    define isolationism and explain if it is possible for a powerful nation to isolate itself from the world. Cite specific details from this period of history and provide reasons for your answer.

    asked by Isaa
  142. English-Plot Summary

    Could someone please provide me with sites from which I can get ideas on how to write a plot summary. Thanks a lot:-)

    asked by Sara
  143. science

    What are the three categories of fungi?

    asked by Patty
  144. chemistry

    Potassium bromide has a solubility of 80g/100ml of H20 at 50º C. A saturated solution would be equivalent to a ____________-molar solution?

    asked by ishaan
  145. algebra: please check

    p/3-3p/8=3 p-3p/8=9 p-3p=72 -316 I am not sure if I did this right. Just guessing.

    asked by bb
  146. algebra

    solve sqrt () x + 7 = 2 sqrt () x a) none b) {3/7} c) {0} d) {7/3}

    asked by poo
  147. Ancient Civilizations

    Hey, did the Ancient Greeks invent/came up with different methods of sculpting that affects the techniques of sculpting today? And also with tools? Thanks

    asked by Nom
  148. algebra

    Solve: 8 = sqrt () y + 2 a){62} b){6} c) none d){66} And I tried to the sqrt root image i can see but you can't and thanks

    asked by poo
  149. Geometry HELP

    What is the equation for a circle with a diameter having the following endpoints: N(0,1) and Q(18,1)? a.)(x - 9)^2 + (y - 1)^2 = 81 b.)(x + 2)^2 + (y - 7)^2 = 56 c.)(x)^2 + (y)^2 = 72

    asked by Ariel
  150. world history

    what is the ka'bah?

    asked by Anonymous
  151. mgt

    Determine what you think would be the best three approaches for managing resistance to change, of the six approaches listed in the Skill Concepts and Behaviors section, to apply to the nursing teams situation. The six approaches for managing resistance to

    asked by Style
  152. Algebra 2

    How do I simplify tan θ + cot θ ? Or is it already simplified?

    asked by Ana
  153. Chemistry

    Could someone tell me what thermal changes are in a heat curve of water or in general what it is? Thank you...

    asked by Amy~
  154. Algebra 2

    Can (1 + cosθ)/sinθ be simplified further?

    asked by Ana