Mandy

Newest questions and responses by Mandy
  1. English

    Correcting faulty parallelism. 1.Medical tests showed that neither being allergic to dust nor seasonal hay fever caused the child’s coughing fits.

    asked on October 24, 2017
  2. psychology

    Bruce is furious when his midterm is returned with a C grade. He tells his sociology professor that he had read each of the assigned chapters three times, and if someone can do that and just be average, then there’s something wrong with the test! The

    asked on April 26, 2017
  3. Chemistry

    Of the compounds below,_____ has the smallest ionic separation and why? A.RbF B.K2S C.SrBr2 D.KF E.RbCl --> How does one determine if a compound has a high or low ionic separation, and what is ionic separation?

    asked on March 20, 2017
  4. Chemistry

    Of the compounds below,_____ has the smallest ionic separation and why? A.RbF B.K2S C.SrBr2 D.KF E.RbCl --> How does one determine if a compound has a high or low ionic separation, and what is ionic separation?

    asked on March 20, 2017
  5. math

    Nine friends share 12 pounds pecans equally. how many pounds does each friend gets equally?

    asked on November 10, 2016
  6. math

    what are 3 ratios for 1/10?

    asked on October 18, 2016
  7. Physics

    The highest wall that a projectile can clear is 17m, when the projectile is launched at an angle of 35.0 degrees above the horizontal. What is the projectile's launch speed?

    asked on September 15, 2016
  8. Math

    How many whole numbers between 100 and 500 have 9 as one or more of its digits?

    asked on August 10, 2016
  9. Math(Assignment Due

    Please help me, I have know idea how to do this and the assignment is due today! A manufacturer is producing metal rods, whose lengths are normally distributed with a mean of 75.0cm and a standard deviation of 0.25cm. If 3000 metal rods are produced how

    asked on June 29, 2016
  10. Math: Multistep area problems

    Mark is covering an 8-inch-square board with 1-inch-square tiles. He uses gray tiles to make four 2-in. by 2-in. squares. He covers the rest of the board with white tiles. How many more white tiles than gray tiles will Mark use?

    asked on June 2, 2016
  11. Math Trignometry

    . From the top of the 800-foot-tall Cartalk Tower, Tom sees a plane; the angle of elevation is 67°. At the same instant, Ray, who is on the ground 1 mile from the building, notes that his angle of elevation to the plane is 81° and that his angle of

    asked on May 19, 2016
  12. Math

    3/5q-(1/5+2q)

    asked on May 7, 2016
  13. Geography

    Which is the result of zero population growth? population stability no natural increase*** a rapid decline in human population the elimination of high density populations

    asked on May 6, 2016
  14. Geography

    Which of the following characterizes a stage 3 population? produces many offspring lives in rural areas experiences a sharp increase in crude death rates consists of primordially urban dwellers***

    asked on May 6, 2016
  15. Chemisrty

    if electricity of sufficient voltage is passed into a solution of potassium iodide in water, a reaction takes place in which elemental hydrogen gas and elemental iodine are produced, leaving a solution of potassium hydroxide. what is the unbalanced

    asked on March 21, 2016
  16. Precal/Math

    How do i get the left side to equal the right hand side? (Cosx)/(1+sinx) + (cosx)/1-sinx = 2secx

    asked on March 19, 2016
  17. Math/Finance

    Randy had $2000 he wants to double in 2 years. What is the approximate rate he will need??

    asked on February 18, 2016
  18. Science

    Ionic bonds: a. result from the sharing of electrons between atoms. b. form only between polar molecules. c. form between atoms that develop opposite charges. d. result from the natural repulsion that develops between protons. answer is C

    asked on January 31, 2016
  19. Science

    As a result of rigorous experimentation Question 7 options: more hypotheses may be developed. more questions may be asked. a new biological concept could emerge. entire theories may be modified or discarded. all of these i suppose

    asked on January 31, 2016
  20. Algebra

    The temperature at 7 AM in Chicago was 12 degrees. If the temperature increased 3 degrees every hour. What would the temperature be in Chicago at noon?

    asked on January 4, 2016
  21. science

    Circle all of the following that go through active transport. a)osmosis b)endocytosis c)diffusion d)exocytosis Please help me, I'll greatly appreciate it! :)

    asked on November 30, 2015
  22. Graphing Reciprocal Trig Functions

    a) y=csc(x-3) I understand that there are asymptotes at 0, pi, and 2pi and I know how to graph the base points but I am confused on how to move it with the phase shift. Do I use a table of value for the asymptotes and base points to move?

    asked on November 29, 2015
  23. Solving Trig Equations

    Solve for x in the interval [-pi,0] a) sin^2x = 3/4 I know that you have +root3/2 and -root3/2 and the positive one gives you an error when doing the inverse of sin, but im confused about the -root3/2. I found that one of the answers of x is -pi/3 (-60

    asked on November 28, 2015
  24. math

    Michael estimated his mass as 8 kilograms. Is his estimate reasonable? Justify your answer. Please help me thanks.

    asked on November 24, 2015
  25. math

    The label on a can of lemonade gives the volume as 12 fl oz, or 355 mL. Verify that these two measurements are nearly equivalent. Please help me with this question.

    asked on November 24, 2015
  26. Advanced Functions

    How would I do this: -cos(90-x) I know you would use the compound angle formula and I know how to do it but when you have -cos do you replace the cos with the negative? so for example -cos90(-cosx) + sinx(sin90)

    asked on November 14, 2015
  27. English

    Which word best matches the meaning of want best used in this sentence? (Many a time we were near suffocation, from the want of fresh air.)

    asked on November 4, 2015
  28. math

    Five coupons of values $2,six coupons of values $3,two coupons of values $5 and two coupons of values $8 are put into a small box.Two coupons are drawn at random from the box without replacement.Calculate the probability that (b)the total value of two

    asked on August 13, 2015
  29. physical science

    A man applies a force of 150N to pull a 20kg box with a rope that makes an angle of 60percent with the horizontal.The box experience a kinetic friction of 15N. Calculate the acceleration of the box.

    asked on June 6, 2015
  30. english essay

    Pls help me..give me a best sample of introduction (paragraph 1) and Conclusion(p.6) & keywords of the contents(p.2-5) about "Why people should quit gambling."

    asked on April 5, 2015
  31. Physics

    A 1500kg car is travelling around a large roundabout of radius 40m at a constant speed of 50kmh-1. Calculate the time it takes to go halfway aound the roundabout. Just wondering which equation I should use. Thanks

    asked on March 26, 2015
  32. addmath A.P.

    An arithmetic progression has 8terms.The sum of all 8terms is 180 and the sum of all odd terms is 80. Calculate (a)the first term and common difference (b)the last term

    asked on March 8, 2015
  33. addmath A.P.

    Tn=3n-2 Find the first term,a;the common difference,d;and then find the 5th term.

    asked on March 8, 2015
  34. Genetics biology

    A man and his wife both have normal vision, but a daughter who has color blindness can the man sue his wife for infidelity? show the cross help me please, have been lots of people saying no and yes to this

    asked on February 20, 2015
  35. Math

    6^7 x 6^11 divided 6^8 x 6^2

    asked on February 16, 2015
  36. Math

    3^12 divided 3x3^6

    asked on February 15, 2015
  37. addmath A.P.

    A wire of length 380 cm is cut into 10 pieces.Each piece is then bent to form a square.The dimensions of the first three smallest squares are shown below.Find the value of x and hence,the area of the eighth largest square. x cm[ ] (x+1)cm [ ] x cm (x+1)cm

    asked on January 18, 2015
  38. addmath

    Find the total number of integers between 10 and 1000 that are divisible by 3.

    asked on January 18, 2015
  39. addmath A.P.

    The first three terms of an A.P. are p-5,p-3 and 2p-15.If the sum of the first n terms of the progression is 180,find the value of n. Answer:n=10

    asked on January 14, 2015
  40. addmath A.P.

    The first three terms of an arithematic profgression are x,2x+y and 9x-y.The sum of these three terms is 60.Find the numerical values of x and y.Then,calculate the eleventh term of the progression

    asked on January 12, 2015
  41. addmath

    Given that k,3k and k+1 are three consecutive terms of an A.P,find the numerical value of k.Then find the first term if 3k is the sixth term of the progression. Answer:k=1over4 a=-7over4 I got the k but the a i can't get

    asked on January 12, 2015
  42. Chemistry

    The Ksp of calcium hydroxide, Ca(OH)2, is 4.68 x 10-6 at 289.15K. Calculate the pH of a saturated solution. Here's my work: 4.68 x 10-6= 4s^3 s= 0.0105 -log(0.0105)= 1.98 14-1.98=12.02 The answer is supposed to be 12.324, but I'm not sure what I'm doing

    asked on December 4, 2014
  43. Genetics

    A portion of alcohol dehydrogenase enzyme contains 375 amino acids. Including both amino acid and all other necessary codes, how long is the coding portion of the corresponding mRNA? Thanks

    asked on November 17, 2014
  44. Help With Statistics

    I would really appreciate help with this. In a survey of 1000 large corporations, 252 said that, given a choice between a job candidate who smokes and an equally qualified nonsmoker, the nonsmoker would get the job. Find a 0.95 confidence interval for p.

    asked on November 13, 2014
  45. Math

    A family purchased a new ski boat for $20,000. The loan agency required a down payment and financed the balance for 36 months with an APR of Determine the total finance charge and monthly payment for the loan.

    asked on November 10, 2014
  46. Chemisty

    In the titration of total acid with sodium hydroxide, NaOH, it was determined that 36.03mL of 0.0980M NaOH was needed to neutralize all the acid in a 10.0mL aliquot of a powdered drink mix solution. In a second titration, it was determined that were 1.45 x

    asked on October 22, 2014
  47. Chemisty

    Consider the reaction of sulfuric acid, H2SO4, with sodium hydroxide, NaOH. H2SO4(aq) + 2 NaOH(aq) -> 2H2O(l) + Na2SO4(aq). Suppose a beaker contains 35.0mL of 0.175M H2SO4. How many moles of NaOH are needed to react completely with sulfuric acid? Thank

    asked on October 22, 2014
  48. Chemistry

    What volume of 5.0 M H2SO4 should be diluted to 100mL to prepare a 0.25 M H2SO4 M solution? I know the molar mass of H2SO4 is 98g but I'm not sure where exactly that fits in and how I'm supposed to get it to be diluted. Thank you!

    asked on October 8, 2014
  49. Psychology

    analyze the function of emotions as motive.

    asked on July 19, 2014
  50. economics

    Using an aggregate demand and supply diagram, explain how each of the following scenarios affects the equilibrium price level and aggregate output. Consider first the short-run, then the long-run equilibrium for each scenario. a) Consumers expect a

    asked on July 15, 2014
  51. math

    There are 25 red beads,x blue beads and y green beads in a box.When a bead is picked at random,the probability that it is blue is 1 over 4 and the probability that it is green is 1 over 3. (a)Find the value of x and y. (b)How many blue beads must be added

    asked on July 7, 2014
  52. math

    In a bag,there are 18 cards of which x cards are coloured and the rest are white.When another 6 white cards are added into the bag,the probability of a white card being picked is x over 8.Find the value of x. Answer:6 How?

    asked on July 7, 2014
  53. add maths

    A point P moves so as to satisfy the ratio OP:PA=1:3,where O is the origin and A is the point (-4,0).Find the equation of the locus of P.

    asked on June 14, 2014
  54. add maths

    A point moves such that its distance from point A(1,0) is twice its distance from B(-2,0).Find the equation of the locus of the point.

    asked on June 14, 2014
  55. chemistry pls help me asap

    2.08g of metal Y react with 0.96g of oxygen to form a metal oxide.The empirical formula of the metal oxide is Y2O3.What is the relative atomic mass of metal Y.

    asked on May 15, 2014
  56. chemistry

    Solution A:50cm^3 of 1.0mol dm^-3 hydrochloric acid,HCl Solution B:10cm^3 of 2.0mol dm^-3 hydrochloric acid,HCl (a)Calculate the number of moles of hydrochloric acid,HCL in each solution. (b)Solution A and B are mixed together. (i)Calculate the number of

    asked on May 7, 2014
  57. chemistry pls help me asap

    100cm^3 of a sodium hydroxide,NaOH solution contains 4.0g of solid sodium hydroxide,NaOH.40 cm^3 of phosphoric acid,H3PO4 is needed to neutralise 40cm^3 of the alkali.(RAM:H,1;O,16;Na,23;P,31) (a)Calculate the molarity of the sodium hydroxide,NaOH

    asked on May 7, 2014
  58. chemistry

    200cm^3 of 1.0 mol dm^-3 sulphuric acid,H2SO4 is poured into a 250 cm^3 volumetric flask.Distilled water is then added to make 250 cm^3 of solution. (a)What is the molarity of the diluted acid solution? (b)What is the volume of 1.6 mol dm^-3 sodium

    asked on May 7, 2014
  59. chemistry

    A student dissolved 3.65 g of hydrogen chloride gas,HCL in water to make 1.0dm^3 of solution.Calculate the volume of a 0.1 mol dm^-3 barium hydroxide,Ba(OH)2 solution required to completely neutralise 25.0 cm^3 of the acid solution.(RAM:H,1;CL,35.5)

    asked on May 7, 2014
  60. chemistry

    The volume of 0.15 mol dm ^-3 sulphuric acid,H2SO4 required to completely neutralise 25.0cm^3 of potassium hydroxide,KOH solution.

    asked on May 7, 2014
  61. chemistry

    50.0cm^3 of 2.0 mol dm^-3 aluminium sulphate,Al2(SO4)3 solution Calculate the number of moles of ions.

    asked on May 7, 2014
  62. chemistry

    Concentrated phosphoric acid,H3PO4 was added slowly into some water to produce 5.0dm^3 of a dilute acid solution.100g of the pure phosphoric acid,H3PO4 was present in the solution.Find the concentration of the acid,in g dm^-3.

    asked on May 5, 2014
  63. chemistry

    Calculate the volume of 2.0 mol dm^-3 sulphuric acid,H2SO4 needed to prepare 2.5 dm^3 of 0.5 mol dm^-3 of the same acid solution.

    asked on May 5, 2014
  64. add maths

    Find the equation of the perpendicular bisector of the straight line joining the points A(-1,0)and B(3,4).

    asked on May 5, 2014
  65. add maths

    Given that log2 3=h and log2 5=k, express log2 0.45 in terms of h and k.

    asked on May 3, 2014
  66. add maths

    Given that x=a^m and y=a^n.Express log^a(3 square root x over ay^2) in terms of m and n.

    asked on May 3, 2014
  67. add maths

    calculate the value of log square root p p^2.

    asked on May 3, 2014
  68. add maths

    Find the value of logb square root b - loga(1/a)

    asked on May 3, 2014
  69. math

    Given a set with n elements has 2^n subsets.Find the number of subsets for set A={2,3,5,7,11}.

    asked on April 2, 2014
  70. add maths

    10^2n+3 × 20^n × 5^n Step:? Answer:10^4n+3

    asked on April 2, 2014
  71. Algebra

    If a salesman earned 6% commissions on sales, and in one week he earned $300 in commissions, how much merchandise did he sell that week?

    asked on March 20, 2014
  72. Business Math

    True Value received an invoice dated 4/28/12. The invoice had a $5,700 balance that included $600 freight. Terms were 5/10, 4/30, n/60. True Value pays the invoice on May 12. What amount does True Value pay?

    asked on February 28, 2014
  73. Business Math

    A local Barnes and Noble paid a $79.33 net price for each calculus textbook. The publisher offered a 10% trade discount. What was the publisher’s list price? (Round your answer to the nearest cent.)

    asked on February 27, 2014
  74. add maths

    f(x)=3x^2-12x+20 Find minimum value and value of x

    asked on February 23, 2014
  75. logarithms

    3^x=6

    asked on February 20, 2014
  76. Business Math

    Rainfall for May in Fiji averages 9" according to World Travel Guide. This year it rained 5% less. How many inches did it rain this year?

    asked on February 19, 2014
  77. Physics

    If the period of the moon were 31 days while its orbit radius 3.8x10^8m, what would the mass of the Earth be?

    asked on February 5, 2014
  78. add maths

    Given that the quadratic equation is (2m+3)x^2+(4m-2)x-(m+1)=0.Find the value of m,if •one of the root of the equation is negative •one of the root of the equation is reciprocal of the other

    asked on February 3, 2014
  79. maths

    The sum of a number and four times its reciprocal is 5.Find possible values of the number.

    asked on January 28, 2014
  80. add maths

    2+square root 3 & 2- square root 3 Form equation ..

    asked on January 27, 2014
  81. add maths

    2+square root 3 & 2- square root 3 Form equation ..

    asked on January 27, 2014
  82. maths

    A woman is now 4 times older than her daughter.Six years ago,the product of their ages was 136.Find their present ages.

    asked on January 26, 2014
  83. add maths

    x^2-17x+52=0 The answer is 4,13 But i don't know how to do..

    asked on January 26, 2014
  84. add maths

    x^2-17x+52=0 The answer is 4,13 But i don't know how to do.. ASAP...

    asked on January 26, 2014
  85. maths

    The product of two consecutive even numbers os 80.Find the values of the numbers.

    asked on January 25, 2014
  86. maths

    The area of the right angled triangle abc (x+4)(x+3) is twice the area of a square with sides x cm.Write a quadratic equation in terms of x.

    asked on January 23, 2014
  87. maths

    Ravi bought x toys for 27$ and 3 mechanical pencils for x$.Given that the total cost of a toy and a mechanical pencil is 6$,write a quadratic equation in terms of x.

    asked on January 23, 2014
  88. add maths

    Function f and g are defined by f:x→4-x and g:x→px^2+q where p and q are constants.Given that the composite function gf:x→x^2-8x+11,find the values of p and q.

    asked on January 22, 2014
  89. Science

    Can someone please please help me? I don't have a text book, i have a online book and it isn't working. Can someone please be nice and help me? Science isn't my subject! 1. Why is Earth’s temperature just right for life? (1 point) Earth’s core is hot

    asked on January 21, 2014
  90. add maths

    A function f is defined by f:x→(x+1)/ (x-1), x is not equal to 1. If f^2(2)=3f^-1(k),find the value of k.

    asked on January 21, 2014
  91. add maths

    Functions f and g are defined by f:x→3 /(x+2),x is not equal to k . No.1~State the value of k

    asked on January 21, 2014
  92. add maths

    Functions f and g are defined by f:x→3 over x+2,x is not equal to k and g:x→2x+1. No.1~State the value of k

    asked on January 21, 2014
  93. add maths

    A function f is defined by f:x→x+1 over x-1,x is not equal to 1.If f^2(2)=3f^-1(k),find the value of k.

    asked on January 21, 2014
  94. add maths

    A function f is defined by f:x→x+10 over x-8,x not equal to 8.Find the values of x for which f^-1(x)=x.

    asked on January 21, 2014
  95. add maths

    Find f^-1 in similar form for each of the following functions. Question no. 1 ↓ f:x→3x over x-3,x not equal to 3 Question no. 2 ↓ f:x→2x+4 over 2x-1,x not equal to 1over2

    asked on January 21, 2014
  96. add maths

    Functions f and g are defined by f:x→ax-b,where a and b are constants and g:x→x+5.Given that fg(1)=11 and gf(2)=8. Calculate the values of a and b? What are the values of fg(-1)and gf(3)

    asked on January 14, 2014
  97. add maths

    If f:x→4x+5,find the composite function f^2.Hence,find f^2(1over2)and f^2(-2) ? The value of x gor which f^2(x)=9

    asked on January 14, 2014
  98. History!

    Can someone please help me? Thanks! I'm really behind and i need to get caught up and i just really need some help! Thanks!! :) 1. As a result of the French and Indian War, _____ claimed all land west of the Mississippi River, and _____ gained control of

    asked on December 18, 2013
  99. Chem

    A 0.170-mole quantity of NiCl2 is added to a liter of 1.20 M NH3 solution. What is the concentration of Ni2 ions at equilibrium? Assume the formation constant* of Ni(NH3)62 is 5.5 × 108.

    asked on December 5, 2013
  100. Chemistry

    Which of the following will be more soluble in an acidic solution than in pure water? AgI, Ni(OH)2, KClO4, SrSO4, CaCO3

    asked on December 5, 2013

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