Questions Asked on
June 14, 2017

  1. Inorganic Chemistry

    Can Cu2+ oxidize 1) SO2 2) C2O4(2-) Does this happens also when the solution is basic? Cu2+ + H2S ---> CuS + H2

    asked by Shenaya
  2. Algebra 2

    A sine function has the following key features: Frequency = 14π Amplitude = 2 Midline: y = 2 y-intercept: (0, 2) how would i graph this?

    asked by sammiexo
  3. Math

    What number is 1 ten thousand greater than 70,000?

    asked by Izza
  4. maths

    The 8th term of an ap is 5times the 3rd while the 7th term is 9 greater than the 4th term.write the first 5 terms.

    asked by agm
  5. geometry

    The image of trapezoid PQRS after a reflection across is trapezoid P'Q'R'S'

    asked by Madhellyn
  6. Chemistry

    Find the ratio of rate diffusion of SO2,O2, CH4?

    asked by ABC
  7. Math

    The third term of a geometric progression of positive terms is 18 and the fifth term is 162 Find the common ration and the first term? Write an expression for the Nth term of the progression? Find the sum of the first 8 terms of the progression??

    asked by Emma
  8. MATH

    A theater has a seating capacity of 1050 and charges $5 for children, $7 for students, and $9 for adults. At a certain screening with full attendance, there were half as many adults as children and students combined. The receipts totaled $7650. How many

    asked by Anonymous
  9. Physics

    Find the unit vector parallel to the vector : C=12i+24j-8k. A.9/7i+5/7j+1/7k B.3/7i+6/7j-2/7k. I think B is correct. Please tell me correct option and method of finding.

    asked by ABC
  10. chemistry

    Use the heat of fusion of water, 79.7 cal/g. to answer the following question. How much energy in calories is released when 30.0g of water freezes?

    asked by k. corbett
  11. Math

    One hundred meters of fencing is available to enclose a rectangular area next to river give a function A that can represent the area that can be enclosed, in terms of X?

    asked by Kenneth
  12. accounting

    examples of relevant economic events

    asked by len
  13. Aptitude

    A rectangular lawn is 50 m long and 30 m wide it has roads 2 m wide joining the mid points of opposite sides and also a path of same breadth is running along inside the lawn what is the total area of roads and paths

    asked by Shivangi
  14. Physics

    Find the angle between the vectors A=6i+8j+10k B=6i+8j-10k

    asked by ABC
  15. physics

    A person standing on a vertical cliff a height h above the lake wants to jump into the lake but notices a rock just at the surface level with its furthest edge a distance s from the shore .The person realizes that with a running start it will be possible

    asked by jenna
  16. math

    A 128-lb person burns 320 calories per hour riding an exercise bicycle at a rate of 10 mi/hr. a) Write a function rule to represent the total calories burned over time by that person. b) Explain how the information in the problem relates to the function.

    asked by Valerie
  17. maths

    anushka scored the following marks in five test 87,75,79,68,84. what should she score in the next test so that her average is higher than 80 marks

    asked by mouparna
  18. chemistry

    need help with a question calculate the concentration of grams of sodium stearate per milliliter of diluted solution. To do this, multiply the concentration of sodium stearate in the dishwashing liquid by the dilution of the solution(1.50 ml dishwashing

    asked by Lacy
  19. Physics

    A spring 20 cm long, is stretched to 25 cm by a load of 50N.What will be it's length when stretched by 100N assuming that the elastic limit is not reached F=ke

    asked by De-bright
  20. math

    massimo has $90 in the bank. Every time he rides the buss he spends $2.50. write and solve an equation that massimo can use to see how many times he can ride the bus.

    asked by nathan
  21. Physics

    The maximum and minimum magnitudes of the resultant of two given vectors are 17N and 7N respectively. If two vectors are at right angles to each other, then find the magnitude of their resultant?

    asked by ABC
  22. Algebra

    What is the distinct letter in the word algebra?

    asked by John alvin aranzado
  23. physics

    A person standing on a vertical cliff a height h above the lake wants to jump into the lake but notices a rock just at the surface level with its furthest edge a distance s from the shore .The person realizes that with a running start it will be possible

    asked by Anonymous
  24. physics

    A wire of 10 ohm resistance is stretched to transform its original length what will be its new Resistivity and new resistance

    asked by Anjuman ara
  25. US Government

    The President can choose to get rid of democracy. A) True B) False (the correct answer?)

    asked by Jake
  26. physics

    Three cities X,Y, and Z are connected by straight highways. City X is 6 km from city Y, city Y is 4 km from city Z, and city X is 5 km from city Z. Find the angle made by the highways XY and YZ?

    asked by Gigz
  27. MATHS

    CALCULATE A PERIMETER OF A SECTOR OF A CIRCLE OF RADIUS 7CM WHICH SUBTENDS ANGLE 6ODEGREE AT A CENTRE.

    asked by AKWACHA SIMON
  28. Combinatorics

    The game is euchre which uses a 24 card deck (Ace through 9). The dealer picks up the King of diamonds, names diamonds trump, and discards the King of hearts. Dealer holds the K-10-9 diamonds, Ace spades, and 9 of clubs. Q1. What is the probability that

    asked by Eric
  29. Algebra 2

    The graph of f(x)=cos(x) is transformed to a new function, g(x) , by stretching it horizontally by a factor of 4 and shifting it 1 unit up. What is the equation of the new function g(x) ? im so confused :/ please help

    asked by sammiexo
  30. Math

    A hockey team is lining up in a row for a group photo there team has one goalie four defence and seven forwards the photographer wants the defence on one side of the goalie and the forwards on the other side how many ways can the team stand in a row for

    asked by Bailey
  31. Math

    In fig AB=AC NB and angle ACD= 110 find angle A

    asked by Anonymous
  32. Physics

    A load of mass 80kg is placed in a lift. Calculate the reaction between the floor of the lift and the load when the lift moves upwards: (i) at constant velocity, (ii) with an acceleration 2ms 2 [Take g 9.8ms 2].

    asked by Moks Amechi
  33. maths

    The sum of the first two terms of a gp is 28, but the sum of the 3rd and 4th terms is 252. find the 2nd term of the GP if the 7th term is 5103.

    asked by agm
  34. math

    A bank offers a 7.75% annual interest rate compounded daily. The periodic interest rate is

    asked by qq
  35. Physics 11

    The diagram shows a collision between a 4.0 kg toy car and a stationary 8.0 kg toy truck. After the collision, the car bounces back at 1.0 m/s while the truck goes forward at 2.0 m/s. Based on these values, are momentum and kinetic energy conserved? Image

    asked by Ryan
  36. Chemistry

    Choose and best oxidizing agent and the best reducing agent: Ni2+, Al, H+, and I- ??? I'm so confused, please help! I know the oxidizing agent is being reduced and the reducing agent is getting oxidized. But how do I use the standard reduction potential

    asked by Jason
  37. Calc

    Find dy/dx by implicit differentiation and simplify the result 1. x=sec(1/y) 2. 4xy+ln(x^2y)=7 Hello I sort of know how to do these problems but not really. :( Can someone show all the work to solving them it would help me greatly. Thank you a lot.

    asked by Dora
  38. algebra

    During a hurricane evacuation from the east coast of Georgia, a family traveled 450 miles west. For the first part of the trip, they averaged 25 mph less than the second part, where their average speed was 62mph. If the total time of travel was 9 hours,

    asked by sarah
  39. Physics

    "Two blocks lie on a triangle as shown in the figure. Block m has a mass of 8 kg and block P has a mass of 21 kg. Assume the inclines and pulleys are frictionless find the tension in the string." The two blocks are on opposite side of an isosceles triangle

    asked by Courtney
  40. College Chemistry

    A 86.3mL sample of water is initially at 17.4 degC. How many kilojoules (kJ) of heat must be added to raise the temperature of the water to 31.8? The specific heat capacity of water is 4.184 J/g.degC. How do I set this up to find the answer. Really

    asked by Matthew
  41. Math

    Find the ratio of rate dffusion of So2 ,O2,CH4?

    asked by ABC
  42. Physics

    If the vectors A and B are such that |A+B|=|A-B, then find the angle between vectors A and B?

    asked by ABC
  43. algebra

    back from break, need help again The height , h, in feet, of a bottle rocket is modeled by: where t is the time in seconds. A. Factor the expression. H = -16t^2 + 60t = 4t(-4t + 15) B. What is the height of the rocket after 2 seconds? When t = 2 H = 4t(-4

    asked by Anonymous
  44. math

    allison bought some shirts for her clothing store for $15 each. she recived $50 off her entire purchase and spent a total of 400 how many shirts did allison purchase for her store?

    asked by nathan
  45. Algebra

    (need help with checking answers) The height , h, in feet, of a bottle rocket is modeled by: h = -16t^2 + 60t where t is the time in seconds. A. Factor the expression. H = 16t^2 +60 = 4(4t^2 + 15) B. What is the height of the rocket after 2 seconds? H =

    asked by Anonymous
  46. Physics

    Two blocks of identical mass are placed in water. One is made of aluminum, the other of wood. The wood block is noted and therefore floating. Upon which is the buoyant force greater? 1) on the aluminum block, 2) on the wood block or 3) they both experience

    asked by Sarah
  47. Math

    I am an even number less than 100.One of my factors is 13.I am made from two consecutive digits.What number am I?

    asked by Anjali
  48. Physics

    The percentage errors in the measurement of mass and speed are 2% and 4%respectively. Then find maximum error in the measurement of K.E?

    asked by ABC
  49. Physics

    An interplanetary probe speeding in deep space suddenly needs to make a left turn. It is presently traveling at v=20000 m/s , and needs to make a quarter circle turn, continuing at the same tangential speed. It is equipped with an ion thruster rocket

    asked by unowen
  50. English

    1. Anybody can make mistakes. 2. We can go to the concert. 3. We could go to the concert. ------------------------------ In a grammar book, it is said that 'can' in #1 is used as theoretical possiblilty' Is that right? In #3, 'could' is used as 'present

    asked by rfvv
  51. English

    1. He may have stolen the money. 2. He might have stolen the money. 3. He can have stolen the money. 4. He could have stolen the money. ------------------------------------ Is #3 ungrammatical? Are #2 and #4 the same in meaning? They both have slight or

    asked by rfvv
  52. math

    a wire whose length is at most 114cm,is bent to form a rectangle.If the length of the rectangle is 5cm longer than the width, what is the maximum area of the rectangle?

    asked by jen
  53. Math

    Hello, I'm not sure how to do this question. Question A wheel with radius 5 cm is being pushed up a ramp at a rate of 4 cm per second. The ramp is 620 cm long, and 180 cm tall at the end. A point P is marked on the circle as shown How far does the wheel

    asked by Felix
  54. math

    Using the quadratic formula; I have to solve 8(a-squared)-a+2=0 a=8, b=-1, c=2

    asked by lena
  55. accounting

    Please help me to get the answers for these questions in order to help my niece for their assignment answers correctly. thanks Answers as called for show computations and analyses 1.An office machine costing p 20,000 has been used for three of its eight

    asked by jessie
  56. Math

    Arthur and Tariq are planning to build a kit car. They are also having a new garage built for the car. They have a scale drawing of their car and a scale drawing of the garage. Will the car fit the garage if the cars scale is 1cm:50cm and the garages

    asked by Hannah
  57. Math

    The boy scouts brought 12 meters of rope.theycut one half into pieces of two third in each..how many pieces did they make

    asked by Fiona bianca
  58. maths

    anuska scored the following marks in 5 test 87, 75, 79,68,84 what should she score in next test so that her average is higher than 80 marks

    asked by mouparna
  59. Math

    I am a 2-digit multiple of 50.What number am I?

    asked by Anjali
  60. physics

    A mass is attached to a horizontal spring and compresses the string by 10 cm (position A). when it is released, it bounces back and stretches the spring by 10 cm (position B). Compare the potential energies at position A and B. The choices are 1). A>B, 2)

    asked by Sarah
  61. Chemistry to DrBob222

    Regarding my question on display.cgi?id=1496901710(I can't post URLs) Can we apply the formula PM=dRT seperately to the systems before and after being heated,and solve this one?

    asked by Shenaya
  62. math

    the largest among three positive consecutive odd numbers is greater than the sum of -4 and the product of 3 and the smallest number. Determine the three numbers. z>-4+3 is the equation I have made but I do not know what to do next.pls. help me. thank you.

    asked by jen
  63. Math

    What is the determinant of a square matrix whose entry or element is digit or number. For example (100). Please tell me method of finding the determinant of this matrix.

    asked by ABC
  64. math

    There are some red and blue marbles in a box. There are 3/5 as many red marbles as blue marbles. Find the ratio of the number of red marbles to the total number of marbles.

    asked by Real
  65. math

    What are imaginary numbers

    asked by Shyam
  66. math

    Explain how to write a function rule from the table below. Then write a function rule. X -2, -1, 0, 1, 2, Y 2.8, 3.4, 4, 4.6, 5.2 Please help

    asked by Valerie
  67. Math

    write the equation of the hyperbola in graphing form from the given information: Vertices at (2,0) and (-2,0); foci at (3,0) and (-3,0)

    asked by Anonymous
  68. maths

    find the equation of the tangent to the curve 3xy^2 -4+2y=29 at the point (1,3)using implicit differentiation.

    asked by maria
  69. education foundation

    Discuss the peculiarities that inform differential pattern of educational advancement in pre and post colonial Nigeria

    asked by hamza ozigi
  70. maths

    one number multiplied by three less than itself equals 18. If that number is positive, what is it? Please show working.

    asked by tom
  71. Math

    Kevin brought 2 pens and 2 erasers for $1.50. Lynn brought 1 pen and 1 notebook for $1.50. Maria brought 2 notebooks for $2.20. How much did Neal pay for 4 erasers?

    asked by Alexis
  72. science

    What is mole?

    asked by Amritpal
  73. Math

    A concrete wall is 36' long 9' high and 1 1/2' thick the number of cubic yards of concrete that were needed to make this wall is

    asked by Rose ann
  74. English

    1. I would not do so, it I were you. 2. I would not do so if I were you. (Are both okay? Do we have to delete the 'comma' in #1? 3. He could come earlier. 4. He could come earlier if he were not busy. (Does #3 mean #4?) 4. He could have come earlier. 5. He

    asked by rfvv
  75. English

    1. He cannot have told a lie. 2. It is impossible that he told a lie. (#1 mean #2. Right?) 3. He could not have told a lie. (What about #3? What is the difference between #1 and #3? What is the meaning of #3?)

    asked by rfvv
  76. math

    Split 27 in two parts such that one part is double of another. Find the parts.

    asked by hello
  77. Maths

    How will I get 100 fruits in Rs500 1watermelon= Rs50 1 apple= 10Rs 1 banana= 1Rs

    asked by Uttam
  78. Multivariable calculus

    I have to show that the relative error of the product of two positive numbers is aproximately to the sum of the relative errors of its factors. My teacher told me to use first order approximation, but I don't know how to use it.Please help

    asked by Jane
  79. physics

    T=6.28√1.63 F

    asked by hjxoh
  80. Science

    You Add a g to My word and I disappear so what word AM I?

    asked by Anonymous
  81. Calc

    FInd the derivative of each of the following function. f(x)=xcosx+x^4e^2x All I know is the rule with the e^u equation where you would do e^2x times 1. other than that I dont know what to do can someone please help and show all work I will appreciate it

    asked by Sandy
  82. maths

    present age of a boy is one less than one-third the age of his mother .

    asked by kaynat
  83. Math

    -10 is greater than -7

    asked by Anonymous