Questions Asked on
May 4, 2013

  1. math

    Find the area of the regular polygon. Round your answer to the nearest tenth. the individual sides are 10 the radius is 13.07

    asked by rebecca
  2. physics

    a projectile with a muzzle velocity of 550 m/s is fired from the a gun on top of a cliff 460 m above the sea level at a certain angle with respect to the horizontal. if the projectile hits the ocean surface. 49.2 seconds after being fired, determine the

    asked by jennierson
  3. Chemistry

    Assuming equal concentrations, rank these aqueous solutions by their freezing point: low to high NH4Cl, Sn(ClO3)4, Na2SO4, and AlBr3.

    asked by Mike
  4. math calculus

    The revenue R for a company selling x units is R = 700x − 0.1^x2. (a) Use differentials to approximate the change in revenue as the sales increase from 2900 units to 3000 units. dR = $ (b) Compare this with the actual change in revenue. ΔR = $

    asked by akash
  5. statistics

    the percent defective for parts produced by a manufacturing process is targeted at 4%. The process is monitored daily by taking samples of sizes n=160 units. Suppose that today's sample contains 14 defectives. How many units would have to be sampled to be

    asked by American Public University
  6. English

    This question is based on the following poem: Seasons are celebrations. A year's a Ferris wheel. Both honor our world's habit of spinning 'round a star. 7. Which one of the following sentences best expresses the main idea of this poem? A. The world has a

    asked by Nikita
  7. math calculus

    The concentration C (in milligrams per milliliter) of a drug in a patient's bloodstream t hours after injection into muscle tissue is modeled by C = 3t/26 + t^3 Use differentials to approximate the change in the concentration when t changes from t = 1 to t

    asked by akash
  8. math calculus

    The concentration C (in milligrams per milliliter) of a drug in a patient's bloodstream t hours after injection into muscle tissue is modeled by C = 3t/26 + t^3 Use differentials to approximate the change in the concentration when t changes from t = 1 to t

    asked by justin
  9. physics

    an aeroplane takes off at an angle of 30 degree to the horizontal. if the component of its velocity is 250 km/h, what is the actual velocity?

    asked by komal
  10. chemistry

    enzymes convert glucose M=180.2 to ethanol M=46.1 according to the equation C6H12O6=2C2H5OH + 2CO2 what is the maximum mass of ethanol that can be made from 15.5 kg of glucose?

    asked by JENNA
  11. geomerty

    Find the area of the regular polygon. Round your answer to the nearest tenth. the individual sides are 10 the radius is 13.07

    asked by sarah
  12. Eng B

    Beyond tone, a poet's attitude toward his or her subject reveals to us a poem' A. structure. B. theme C. diction D. subject It's "B"

    asked by Gen
  13. Chemistry

    What is the mass of ethylene gycol dissolved in 5.00 kg of a 40.0% solution?

    asked by Nicole
  14. maths-urgently needed ,plse

    Explain cos^-1 [cos 5pi/4] also tell it can be defined or not.

    asked by anoynomous
  15. algebra

    please help Solve for h in U= mgh. Please show steps.

    asked by sally
  16. chemistry

    find the molar solubility of zinc carbonate if its ksp=1.5x10^-10. (at 298K)

    asked by mike
  17. grammar

    what are tangible and intangible verbs?

    asked by deveeka
  18. legal writing 2

    i am suppose to write 2 legal memorandum sally bright v. john bright and john bright v. sally bright child custody case. mother wants to take minor child out of the country.

    asked by barb
  19. english

    WHOEVER has made a voyage up the Hudson must remember the Kaatskill mountains. They are a dismembered branch of the great Appalachian family, and are seen away to the west of the river, swelling up to a noble height, and lording it over the surrounding

    asked by mandy
  20. legal writing 2

    legal writing project 2 sally bright v. john bright

    asked by barb
  21. geometry

    Find the area of the segment of the circle. Leave your answer in terms of pi. there is a circle with a 90 degree triangle and one side is 3 cm

    asked by Hannah
  22. algebra

    Austin and Kaitlyn Kojan invested $195,000 in a business venture. If Kaitlyn invested 2 ¼ times as much as Austin invested, how much money did Kaitlyn invest? (Points : 2)

    asked by shirley
  23. geometry

    You and your friend ordered a 12 cut pizza with a radius of 8 inches. How much cheese is needed to cover one slice of the pizza? Hint: Find the area of one slice. Round your answer to the nearest tenth

    asked by Hannah
  24. science - physics

    A potential charge of magnitude 2.0uC is moved between two points X and Y Point X is at a potential of 6.0V and Point Y is at a potential of 9.0 V Find the gain in potential energy of Point charge

    asked by BINA
  25. chemistry

    Would you expect the solubility of PbCl2 in water to change dramatically if it were to be dissolved into a solution of 3.091×10−4 M KCl? Yes, the solubility of PbCl2 would decrease dramatically. Yes, the solubility of PbCl2 would increase dramatically.

    asked by ssss
  26. math

    The area of a parallelogram is 420 centimeters squared and the height is 35 cm. Find the corresponding base. Be sure to show all work and label your answer

    asked by Shelby
  27. chemistry

    Helium-oxygen mixtures are used by divers to avoid the bends and are used in medicine to treat some respiratory ailments. What percent (by moles) of He is present in a helium-oxygen mixture having a density of 0.528g/L at 25 degree celsius and 721 mmHg ?

    asked by molly
  28. History

    2. The new democratic age of the 1820s, ’30s, and ’40s not only witnessed the advent of universal white male suffrage but also a strong impulse for social reform, which was often supported by those denied access to the ballot. What drove the impulse

    asked by Patrick
  29. English

    This question is based on the following excerpt from a short story. Inside the bus, in his summer Class-A uniform with its brass glitter and infantry-blue shoulder cordon, Jamie Sabin was going home. Fort Benning would be a fading dream; Preston, Virginia,

    asked by Nikita
  30. geomerty

    Find the arc legnth of Arc AB. Leave your answer in terms of pi. arc is 45 degrees radius is 5

    asked by Izzy
  31. math

    Find the area of the segment of the circle. Leave your answer in terms of pi. there is a circle with a shaded area that has a 90 degree triangle in it and a 3 next to one soide of the triangle

    asked by becca
  32. Statistics

    The world’s smallest mammal is the bumblebee bat. Such bats are roughly the same size of a large bumblebee. Listed below are the weights (in grams) from a sample of these bats. Assuming that all such bats have a standard deviation of .3 grams, use a

    asked by Jonie
  33. Probability

    You draw two cards from a well-shuffled deck of 52 cards. After you draw the first card, you do not replace it in the deck. The probability of drawing the ace of diamonds on your first draw is 1/52. What is the probability of P(get king of clubs on second

    asked by Tifini
  34. Statistics

    A certain lottery is won by selecting the correct four numbers from 1,2....30. The probability of winning if the rules are changed so that in addition to selecting the correct four numbers you must now select them in the same order as they are drawn?

    asked by Sabrina
  35. algebra 1 help

    simplifying square roots 1) find volume of this prism? v=bwh b=√12" w=√6" h=√8" 2)simplify: √576 3)simplify: √400 4)simplify: √256 5)simplify: √(1/4) ex 2√5 + 6√5= 8√5 the answer has to be in √ but i don't understand it i got help by

    asked by anonymous
  36. Calculus

    Related Rates Problem An isosceles triangle with a base of 20root3 cm long. If the length of the leg decreases at rate 3 cm/h, find the rate of decreasing of the area of the triangle in the instant at which the triange becomes equilateral.

    asked by Mostafa
  37. Stat

    A student takes a 10-question true-false and randomly guesses the answer to each question. Suppose a correct answer is worth 1 point, an incorrect answer is worth -.5 points. Find the probability the student gets 7 or more points.

    asked by alice
  38. Math, Calculus

    A right circular cone has a constant slant height of 12 feet. Find the radius of the base for which the cone has maximum value

    asked by Jatin
  39. statistics

    A manufacturing company produces 10,000 plastic glasses per week. This company supplies plastic glasses to another company, which packages the glasses as part of picnic sets. The second company randomly samples 10 glasses from the supplier. If at least

    asked by happy
  40. math

    4. Suppose your living room is a rectangle measuring 13 feet by 21 feet and it needs new carpet. How much carpet do you need in square yards and how much would your cost be if it is sold at $21 per square yard? Round your first answer to the nearest square

    asked by emma
  41. math

    Find a good estimate of 145% of 58.

    asked by Anonymous
  42. Calculus

    A right circular cone has a constant slant height of 12 feet. Find the radius of the base for which the cone has maximum value

    asked by Kris
  43. Please help! im so confused!

    You draw two cards from a well-shuffled deck of 52 cards. After you draw the first card, you do not replace it in the deck. The probability of drawing the ace of diamonds on your first draw is 1/52. What is the probability of P(get king of clubs on second

    asked by algebra 2
  44. calculus

    Let x = 1 and Δx = 0.01. Find Δy. (Round your answer to five decimal places.) f(x) = x/x^2 + 5

    asked by akash
  45. programming

    Write a C++ code to count the number of characters, words, and lines entered by the user. The program stops if the user enters two dots.

    asked by amgad ahmed
  46. Chemistry

    What is the Ka of the amino acid serine if it is 34.5% dissociated at pH- 9.46?

    asked by Chloe
  47. Physics

    A ball of volume V=8 L is full of air with pressure higher than atmospheric pressure by ?p=2×104 Pa. The total mass of the ball and the air inside is 200 g. The ball is tossed up to a height h=20 m, then it falls down, collides with the ground, and

    asked by abc Please help URGENT
  48. chemistry

    To identify a diatomic gas (), a researcher carried out the following experiment: She weighed an empty 2.4- bulb, then filled it with the gas at 1.70 and 28.0 and weighed it again. The difference in mass was 4.7 . Identify the gas.

    asked by molly
  49. Physics

    A beam having a length of 20 metres is pivoted at its mid point. A 200 newton load is located at a point 5 metres from the right hand end of the beam. A 300 newton load is located at a point 8 metres from the right hand end. In order to be in equilibrium,

    asked by Danny
  50. Finance

    A company has identified the following investments as looking promising. Each requires an initial investment of $1.2 million. Which is the best investment? a)a perpetuity that generates a cash flow at the end of year 1 of $100,000, has a growth rate of

    asked by Elena
  51. Math

    The caribou population of an area has been growing at an annual rate of 2% , A) If there are 850 initially, how long before there is a 1000? B)How long for it to double? x 1000=850(1.02)

    asked by Anonymous
  52. Business Law

    The paper must be two pages, excluding title page and references page(s), and formatted according to APA style as outlined in the Ashford Writing Center. Imagine that you own each of the following businesses: Tinker’s Home Security Service (sole

    asked by Ms Y
  53. math prob

    A boat is located at a random location uniformly distributed inside of the circular pool of radius 1 mile. The boat is tied by a rope to a pole located directly at the center of the pool. A bird lands on the rope at the uniformly random location. If X is

    asked by hsuan
  54. geometry

    How much more pizza is in a 12-in. diameter pizza than an 8-in. diameter pizza? Round your answer to the nearest hundredth. Be sure to show all work and label your answer. TWO points for the work...TWO points for the corrrect answer

    asked by Becky
  55. math

    the sum of one third of the number of computers c and the number of desks

    asked by cee
  56. maths-urgently needed

    Rana bought 500 shares of HCL at a rate that yielded him 20 % return on a 24%, Rs 350 share. Later on , the company issued a bonus share for every 10 shares held. When the market price was Rs 480 he sold all the shares and invested the proceeds in buying

    asked by anoynomous
  57. math

    Assuming that a table saw blade has a diameter of 12 inches and spins at 3450 revolutions per minute (RPMs),determine how fast the tip of the teeth of the saw blade are traveling in miles per hour. Answer: 3450/12= 287.5 RPMs 287.5 min/60 mins = 1 hr =4.8

    asked by emma
  58. Calculus-Solved-Why is this wrong?

    use differentials to approximate the change in f(x) if x changes from 3 to 3.01 and f(x) = (3x^2-26)^10 derivative: 10(3x^2-26)^9 f(x+ delta x)= 1 + 10(3x^2-26)^9 * 0.01 = 1 + 10(0.01)

    asked by Alaina
  59. chemistry

    Consider the gold-platinum system which has a value of delta w of -4250 J/mole; (a) Calculate the enthalpy of mixing for a solution of 10% platinum and 90% gold. Express your answer in units of kJ/mole. (b) Is the dissolution of 10% platinum into gold an

    asked by ssss
  60. Math

    LeAnn is a carpet layer. She has agreed to carpet a house for $18 per square yard. The carpet will cost her $11 per square yard, and she knows that there is approximately 12% waste in cutting and matching. If she plans to make a profit of $580.80, how many

    asked by Elizabeth
  61. analytical chemistry

    A solution containing both Fe 3+ and Al 3+ can be selectively analyzed for Fe 3+ by buffering to a pH of 2 and titrating with EDTA. Th e pH of the solution is then raised to 5 and an excess of EDTA added, resulting in the formation of the Al 3+ - EDTA

    asked by jody
  62. maths-

    Rana bought 500 shares of HCL at a rate that yielded him 20 % return on a 24%, Rs 350 share. Later on , the company issued a bonus share for every 10 shares held. When the market price was Rs 480 he sold all the shares and invested the proceeds in buying

    asked by anoynomous
  63. analytical chemistry

    Shown below is a diagram of an electrochemical cell. Write the shorthand, or schematic, notation for this cell

    asked by yara
  64. math

    Suppose you are turning in a receipt to your ward financial clerk for a reimbursement and unfortunately only the final amount of $57.93 is showing on the receipt. The ward clerk asks for your help to calculate how much went to state sales tax (which is

    asked by emma
  65. Math

    G is a circle with chord AB. P is a point outside of G such that PA is tangent to G and ?BPA=90°. If AB=48 and PB=8, what is the radius of G?

    asked by abc Please help URGENT
  66. math prob

    It is known that the number of people who enter a bank during a time interval of t minutes is a Poisson random variable with the parameter t. The bank opens at 8am and you arrive at the bank at uniformly random time between 8am and 9am. Let X be the

    asked by hsuan
  67. Math

    A point P is uniformly chosen inside a regular hexagon of side length 3. For each side of the hexagon a line is drawn from P to the point on that side which is closest to P. The probability that the sum of the lengths of these segments is less than or

    asked by abc Please help URGENT
  68. chemistry

    what is a titration, what is the type of reaction to find the volume of hydrochloric acid needed to react with 25 of potassium hydroxide solution

    asked by bee
  69. chemistry

    does kh2po4 react with sodium lauryl sulphate and can we use nah2po4 insted of kh2po4 in prepration of 0.2 m phosphate buffer ?

    asked by jiya
  70. math

    Find the area of the segment of the circle. Leave your answer in terms of pi. there is a 90 degree angle and the sides measure is 3

    asked by Izzy
  71. us history

    3. Keeping in mind how the expansion of U.S. territory westward threatened the delicate balance of power in Congress between free and slave states and Lincoln’s stance on slavery, describe how key events (such as land acquisitions, agreements about how

    asked by Patrick
  72. Math

    The caribou population of an area has been growing at an annual rate of 2% , A) If there are 850 initially, how long before there is a 1000? B)How long for it to double? x 1000=850(1.02)

    asked by Anonymous
  73. Science

    1.If you have an object that has a mass of 8 grams and a volume of 4 cm3 , what is the objects density? 2g/cm3 2.A rock is found in nature with a mass of 36 grams. When using the water displacement method, the water level began at 30ml and rose to 36ml

    asked by Jerald
  74. Maths algebra

    Wilma went to the local market and bought 3 lemons and 5 oranges for $2.40.The same day and for the same price ,Fran bought 4 lemons and 7 oranges for $3.31.What was the prices per lemon and the price per orange?

    asked by firdous
  75. maths-urgently needed ,plse

    Atul invested Rs 75000 in buying Rs 200 shares of ABC Ltd paying a dividend of 20%. He bought them at a rate which gave him a yield of 16%. After a year he sold them at Rs 350 and invested the proceeds along with the dividend obtained in buying Rs 175

    asked by anoynomous
  76. chemistry

    Calculate the pH of the following solutions. (A) 0.95 NaOH (B) 9.9x10^-10 M NaOH (C) 6.7 M NaOH

    asked by wes
  77. slope help

    write an equatiion with a slope of 3 that goes throught the point (4,5) write an equation with a slope of -1/2 that goes through the point (1,5)

    asked by anonymous
  78. algebra 1 help

    i have 8 coins in my pocket all are either nickles or dimes. they total 70 cents how many nickels and how many dimes do i have? there are 28 members of the co-ed flag football team, this icludes 6 more boys than girls. how many boys and how many girls are

    asked by anonymous
  79. probability

    According to genetic theory, plants of a particular species have a 25% chance of being red-flowering, independently of other plants. Find the normal approximation to the chance that among 10,000 plants of this species, more than 2400 are red-flowering.

    asked by jutt
  80. calculus

    please anyone help me out Consider the following. Function Point f(x) = 5x^2 − 4, (3, 41) Find an equation of the tangent line to the function at the given point. y = Find the function values and the tangent line values at f(x + Δx) and y(x + Δx) for

    asked by justin
  81. math 160(buss calculus)

    my homework is due in 1 hour Let x = 1 and Δx = 0.01. Find Δy. (Round your answer to five decimal places.) f(x) = x/x^2 + 5

    asked by sam
  82. Algebra

    What is the smallest possible positive integer x>5 , that leaves a remainder of 5 whenever it is divided by 14 , 8 or 77 ?

    asked by Tony
  83. Algebra

    If a is a real number and a cubic equation f(x)=x^3−12x^2+(a+20)x−2a has a repeated root, what is the sum of all the possible values of a ?

    asked by Tony
  84. bba,math

    parabola y^2=px pass through (4,-2).find the latus rectum and focus.

    asked by biswajit mondal
  85. Physics

    a magnetic rail gun is constucted to give a space vehicle its intial launch velocity, thereby reducing the amount of fuel the vehicle has to carry. it consist of two very long parallel rails across which is positioned a large current carrying crossbar 7.65

    asked by Jane
  86. math

    Assuming that a table saw blade has a diameter of 12 inches and spins at 3450 revolutions per minute (RPMs), use the unit conversion techniques you have learned from the material in 2-A to determine how fast the tip of the teeth of the saw blade are

    asked by emma
  87. math

    Assuming that a table saw blade has a diameter of 12 inches and spins at 3450 revolutions per minute (RPMs),determine how fast the tip of the teeth of the saw blade are traveling in miles per hour.

    asked by emma
  88. Calculus-Solved

    this is wrong. but can you explain how to correct it? thanks use differential of x^-1/3 to approximate solution to (1/cube root(7.952)) differential: df= -1/3(x^(-4/3)) * dx df= -1/48 * 0.0048 df= -0.001 0.500 - 0.001 = 0.499 but this is wrong.

    asked by Alaina
  89. Life orientation

    Critically discuss 5 ways in which the environment problems impacts on the community.

    asked by Stephen
  90. help please

    Although its meaning may vary from one culture to the next, __________ appears to be an almost universal taboo. A. murder B. rape C. theft D. incest D am i correct?

    asked by Emily
  91. st pauls high

    What are welfare payments or consumers subsidies ?

    asked by glenrose
  92. science- physic please help

    Well I did a Pendulum lab. The length of my pendulum on a string was 95 centimeters and it took 19.15 seconds to complete the 10 cycles. Please help me to find the frequency.

    asked by Tristan
  93. Science - Chemistry

    I need help I've got 2 books and they both tell me different things. I need to know the 3 different ways of extracting salt, how it's done, the advantages and the disadvantages of each one?? Please Help!!!

    asked by Anonymous
  94. Creative writing

    More descriptive ways to explain the color red instead of just saying it? I already compare it to the color of blood. Any other ideas?

    asked by Millie
  95. precalculus

    Consider the ellipse 9 x^2 + 36 y^2 = 64. the length of its major axe is ? the length of its minor axe is ?

    asked by dylan
  96. Math

    The caribou population of an area has been growing at an annual rate of 2% A) if there are 850 initially, how long before there is a 1000? B) How long for it to double?

    asked by Anonymous NEED HELP
  97. math

    Translate the following statement into an equation: A number (X) decreased by 4 is 25.

    asked by Tee
  98. Algebra

    a and b are positive integers that satisfy 18a=b^3 . What is the minimum possible value of a+b ?

    asked by Anonymous
  99. Algebra

    How many distinct rational numbers can be expressed in the form a/b, where a and b are integers such that 1

    asked by Tony
  100. Trigonometry

    f(x)=105sin(kx+m) , for some real numbers k and m , and g(x)=f(x)/5. What is the maximum value of g(x) ?

    asked by Tony
  101. Algebra

    What is the sum of all possible integer values of x such that (x^2−35x+305)^(x^2−42x+416)=1?

    asked by Tony
  102. maths-urgently needed

    Atul invested Rs 75000 in buying Rs 200 shares of ABC Ltd paying a dividend of 20%. He bought them at a rate which gave him a yield of 16%. After a year he sold them at Rs 350 and invested the proceeds along with the dividend obtained in buying Rs 175

    asked by anoynomous
  103. calculus

    for the next 7 years how much should I set aside sp that in years 7-12 i can make $4,000.00/month payments?

    asked by will
  104. CHEMISTRY

    1.AN ORBITAL can have at the most two electrons of opposite spine can be called ?

    asked by STEPHEN
  105. math

    How many pairs of integers (x,y) satisfy the conditions y=3x-1,6x-2y=2 and 0

    asked by Anirudh Mahapatro
  106. Maths

    A+B+B=35. B+B+c=25. A+B+B+B+c=55 What is the value of B?

    asked by Help
  107. Physics

    Consider the following standing wave, (all units are SI) z=0.2sin(0.4y)cos(350t) (a) what is the wavelength? (b) The values of y where the displacement is always zero, are of the form y=a+bn, where n=0,±1,±2,3, etc. What is b ? (c) The values of t where

    asked by rishabh gupta
  108. math

    Find all pairs (m,n) of positive integers such that m(n+1) + n(m-1) = 2000

    asked by P.A.
  109. Socials

    what are guadeloupe's main occupations? What is the weather like in Guadeloupe? What are some fun things to do in Guadeloupe? What are the travel costs(flights, trains, hotels...) in guadeloupe? What are the main cities of Guadeloupe? can u please give me

    asked by Tess
  110. algebra

    find the LCM of 15ef and 12e^4 (12e to the power of 4) Please show the steps. I do not understand how to do this.

    asked by sally
  111. life orientation

    5 ways in which human factor problem impacts on the community

    asked by slindile
  112. algebra

    A= 9/4(h-80)

    asked by Cy
  113. Advance Coding

    how to code the following with POA indicator patient admitted for chemotherapy for an azathioprione I V58.11, 285.3 drug induced aplastic anemia 284.89/D61.1.

    asked by Louise Bradley
  114. precalculus

    Consider the ellipse 9 x^2 + 36 y^2 = 64. the length of its major axe is ? the length of its minor axe is ?

    asked by dylan
  115. l.o

    1. identify and desribe 3 environmental health hazards that cause ill health, crisis, and or disasters within the south african community and globally

    asked by dipuo
  116. slope help

    write an equatiion with a slope of 3 that goes throught the point. write an equatiion with a slope of -1/2 that goes throught the point. determine equation for the line with pints (6,3) and slope of 2. equation of line points (2,8) slope -3

    asked by anonymous
  117. precalculus- ellipses

    Consider the ellipse y^2=1-6 x^2. Its vertices are (0,A) with A= ? its foci are (0,+/-B) with B= ? its eccentricity is ? the length of its major axe is ? the length of its minor axe is ?

    asked by dylan
  118. calculus

    Find any relative extrema and any points of inflection if they exist of f(x)=x^2+ ln x^2 showing calculus. Please show work in detail so I can follow. Thanks. The answer is no relative max or min and the points of inflection are (1,1) and (-1,1) but I'm

    asked by Rene
  119. Algebra

    Parallelogram ABCD has ÚABC=x ∘ and ÚBCD=2x ∘ +111 ∘ . What is the value of x ?

    asked by Anonymous
  120. Algebra

    Three roots of f(x)=x^4-2x^3 +ax^2 +bx+c are −5 , −3 and 4 . What is the value of a+b+c ?

    asked by Anonymous
  121. Algebra

    If the ratio of x+y to x−y is 11/4, then the ratio of y to x can be written as a/b where a and b are coprime positive integers. Find a+b .

    asked by John
  122. Geometry

    Parallelogram ABCD has ÚABC=x ∘ and ÚBCD=2x ∘ +111 ∘ . What is the value of x ?

    asked by John
  123. Physics

    Here's a neat trick. If your average ceramic bowl has a mass of 200 g, what is the difference in Newtons between the weight of the bowls on the top of her head before and after she does the trick?

    asked by Sarah
  124. Chemistry

    what is the final volume of 1% KOH soltion prepared from a 10ml of a 20% KOH solution?

    asked by Amy
  125. Practical chemistry

    Preparation of 0.1m H2S04 of 500cm3 flask

    asked by Kenechukwu
  126. analytical chemistry

    A 10.00 mL aliquot of a solution of a weak acid , HA, whose pK a is 4.76 is titrated with OH - generated by electrolysis of water according to th e following scheme: 2 H 2 O + 2 e - ⇔ 2 OH - + H 2 (a) [5 points] If the end point in the titration is

    asked by jody
  127. English

    Q1: Whose family often joins Sonya's family for dinner? 1. Anton's family. 2. Anton's fmaily does. 3. Anton's family often does. 4. Anton's family often joins her family ofr dinner. 5. It's Anton's family. 6. They are Anton's family. (Which answers are

    asked by rfvv
  128. mathematics

    draw graphs of f(x)=tanx and g(x)=2cosx for 0°less than and equals to x less than and equals to 360°.

    asked by sedijame
  129. Life Oritantion

    5 ways in which the rate of crime inpacts on the community

    asked by Avela
  130. life orientation

    what are 5 ways in which the human or environmental problem impacts on the community?

    asked by suzan
  131. LOGICAL PUZZLE

    On the first three downs, the local high school football team had the following gains and losses: 6 yard gain, 10 yard loss, and a 12 yard gain. What is the total gain or loss, and did they manage to get another set of downs?

    asked by DIANE
  132. algebra

    Find the slope of the line that passes through the points (–3, –6) and (1, 6).

    asked by lisa
  133. Math

    The caribou population of an area has been growing at an annual rate of 2% , A) If there are 850 initially, how long before there is a 1000? B)How long for it to double? x 1000=850(1.02)

    asked by Anonymous
  134. life orientation

    reccommendation on how to address water pollutoin

    asked by slindile
  135. life orientation

    recommendation on how to address hiv and aids

    asked by slindile
  136. math

    hurry!, find the value of x in 2^x + 2^x + 2^x = 192. with explanation.

    asked by jeff harison
  137. math

    if 4^x - 4^x-1 = 24, then find value of x. please explain.

    asked by hurry! nick
  138. math

    I am supposed to find the area of a segment of a circle. The circle is cut with two radi with an angle of 90 degrees. Then where the radi touch the circle another line is drawn to connect them. The triangle and the small section between the triangle and

    asked by Ed
  139. Maths algebra

    Larry has an oil painting that he bought for $700 and now wants to sell.How much more profit could he gain by fixing a 30% profit based on the selling price rather than a 30 % profit based on the cost?

    asked by firdous
  140. Calculus

    1) Find correct to six decimal places root of the equation cos(x)= x for xE[0, pi/2] using Newton's Method. 2) A triangle has two constant lengths of 10 cm and 15 cm. The angle between two constant sides increases at a rate of 9 deg/min. Find the rate of

    asked by G
  141. psychology

    Learning from animal responses 1930 - 1950

    asked by Ronald
  142. Science...ANSWER ASAP

    i've lost my task sheet and i can't find it online. but my other class mates have managed to find it. I cant get hold of them as it's bank holiday monday. my homework is due in first thing. my task sheet is called: 9G task sheet (L5-7) please help..it hass

    asked by HS...
  143. math

    width x length = volume. is that correct

    asked by felicia
  144. physics134

    A ball, with a mass of 0.144 kg, is thrown from the top of a 76.8 m building (point A) at an angle, θ = 65º with respect to the horizontal. The initial speed of the ball is unknown. The ball reaches a maximum height of 12 m above the building after which

    asked by Anonymous
  145. math

    You are driving a car and the speed is an exponentialy distributed random variable with mean 50 (in miles per hour). The speed limit is 60 miles per hour, and if your speed is x > 60 miles per hour, the probability you are stopped by the police is 1 -

    asked by hsuan
  146. Calculus-Solved - Incorrect

    calculate delta y for f(x)= x^(3/2) with x= 4 and delta x= dx=0.1 delta y= f(x+delta x)- f(x) = f(4.1) - f(4) delta y= f(4.1)-8 f(x + delta x)= 8 + 3/2*x^(1/2)*0.1 = 8 + 0.15x^(1/2) = 8 + 0.30 = 8.30 delta y= 8.30 - 8 delta y= 0.30 but this is wrong. why

    asked by Alaina
  147. Calculus-Solved - Incorrect

    k(z)= 4z^4 - z(z+10)/((1+z)^2) derivative? 16z^3 + (3z^3 + 26z^2 + 42z + 10)/((1+z)^4) this is wrong though ^

    asked by Alaina
  148. Social studies

    What is the new yorks capital

    asked by Thiara
  149. mathematics

    draw graphs of f(x)tanx and g(x)2cosx for 0° less than equals to x less than equals to 360°.

    asked by sedijame
  150. math

    Bob has three sacks of apples and three more apples in his pocket. Each sack contains the same number of apples. Altogether, Bob has 33 apples. How many apples are in each sack? what is the domain and range

    asked by Serena
  151. informal logic

    in the truth table for an invalid argument

    asked by dominique
  152. Asympotes, Data?

    f(x)= 2x/(x^2+1) Vertical: none Horizontal: none Minimum: x=-1 Maximum: x=1 Inflection Points: it seems like there are one or two, but i don't know how to factor f''(x)= 4x^3 + x^2 - 12x + 1 :/

    asked by Alaina
  153. Math

    Find the length of the side of the largest square nut that can be milled from a piece of round stock that the diameter is 15mm. Use the 45-45-90 degree formula to solve.

    asked by Paco
  154. life orientation

    5 ways in which hiv/aids impacts to the community & relevant sources to support your claims

    asked by ntando xolo
  155. Math

    Larry is 74 inches tall and his shadow is 70 inches long. At what degree is the elevation is the sun?

    asked by Anon