Questions Asked on
December 3, 2017

  1. Chemistry

    A solution contains 2.2×10−4 M Ag+ and 1.3×10−3 M If NaI is added, will AgI(Ksp=8.3×10−17) or PbI2(Ksp=7.9×10−9) precipitate first? I know the answer to this is AgI Specify the concentration of I− needed to begin precipitation.

    asked by Caitlin
  2. algebra 1

    How many solutions does this system have-2x+y=3 6x=9-3y A. one B. none C. infinite D. two A??

    asked by sydney
  3. Math

    Compare the graphs of the logarithmic functions f(x)= log(7)x and g(x) = log(4)x. For what values of x is f=g, f>g, and fg, but what is f

    asked by Max
  4. geometry

    Given: ΔАВС, m∠ACB = 90° CD⊥AB,m∠ACD =60° BC = 6 cm. Find: АD

    asked by Johnny
  5. Math (PROBABILITY)

    Elizabeth wants to use a standard number cube to do a simulation for a scenario that involves three equal outcomes. What is one way in which she can do this?

    asked by Gabby
  6. Math

    If the probability of an event happening is p, what is an algebraic expression that represents the probability that the event does not happen?

    asked by Gabby
  7. Economics

    which of the following changes in trade would produce the greatest increase in gdp? increase exportsm& increase imports increase exports & decrease imports decrease exports & increase imports decrease exports & decrease imports my answer is the 2nd one

    asked by Steve
  8. SCIENCE

    AN AIRPLANE TRAVELS 290 KM BETWEEN AUSTIN AND DALLAS IN 1 HOURS 15 MIN.WHAT IS ITS AVERAGE SPEED?

    asked by HANEEN
  9. math

    In ΔABC,AD and BE are the angle bisectors of ∠A and ∠B and DE║ AB.If m∠ADE is with 34° smaller than m∠CAB,find the measures of the angles of ΔADE.

    asked by Johnny
  10. Math

    The soccer team is selling key chains to raise money for the team. They ordered 100 key chains that sell for .25 each. There is a flat shipping rate of $8. The team sells the key chains for $2 each. With that information, I figured they made $33.00 selling

    asked by Nevaeh
  11. physics

    A cyclist in an Olympic race is moving in a circular track of radius 80 m with speed 72 km/h. He has to lean from the vertical approximately through an angle of... ANS: tan-1(1/2) How is tan-1(1/2) derived in this answer?

    asked by JC
  12. Math

    The side of a square flower bed is 1 m and 80 cm long. It is enlarged by digging a strip 20 cm wide all around it. find the area of the flower bed and also the increase in area of the flower bed answer me.

    asked by Amreen
  13. algebra

    OLD MCDONALD IS GOING TO PUT A PIG PEN UP AGAINST HIS BARN. HE HAS 45 FEET OF FENCING AND WILL ONLY NEED TO MAKE 3 ADDITIONAL SIDES, AS THE BARN ACTS AS THE FOURTH SIDE.. WHAT IS THE MAXIMUM AREA THAT THE PIG PEN CAN HAVE.

    asked by Megan
  14. Chemistry

    If 0.370 g of Ca(OH)2 is added to 500 mL of water and the mixture is allowed to come to equilibrium, will the solution be saturated?

    asked by Caitlin
  15. Math

    An object is thrown upward from the top of a 160-foot building with an initial velocity of 144 feet per second. The height, h, of the object after t seconds is given by the equation h=-16t^2+144t+160. When will the object hit the ground? The object will

    asked by Marcus
  16. math

    Could you explain this? ("Dumb it down for me") So far I know that 2^2 x 3 x 5^4 x 8 x 11^2 is equal to 4 x 3 x 625 x 8 x 121. (I think) ========================================== A number is written with the following factorization: 2^2 × 3 × 5^4 × 8

    asked by Pepsi
  17. Algebra I

    11. The equation T = 0.63s + 78 can be used to determine T, the temperature in degrees, inside an oven s seconds after the oven is turned on. Which statement relative to this equation is true? * 1 point A) Each second the temperature increases by 78

    asked by PLZ HELP CONNEXUS
  18. Calculus

    Approximate the area under the curve of f(x)=9-x^2 between x=-2 and x=3 by calculating the area of 5 rectangles for both left hand endpoints and right hand endpoints. I have the left hand and right hand endpoints, what I need help in is solving for the

    asked by Mike
  19. math

    When you start your shift, the warehouse has 1,483 ceiling fans. if you pack and ship 32 fans per hour, how many fans will be left in the warehouse at the end of your 8 hour shift?

    asked by student that needs help asap
  20. Algebra

    Factoring Polynomials GCF and Quadratic Expressions: 5b^2k^2+25bk^2-250k^2 The answer I figured was GCF for the polynomial is 5 and the GCF for the variable is bk^2. Is this correct.

    asked by Mary
  21. English

    List the characteristics that are unique to Arthur and to Sundiata. What qualities do the two characters have in common? I need help figuring out which qualities are unique to Arthur and which are unique to Sundiata.

    asked by Anon
  22. Physics

    An ideal string passes over a fixed pulley and carries masses M1 = 12kg and M2 = 8kg tied at its end. Calculate the acceleration of masses and tension in the string when released (g=10m/s2) I know the answers are a = 2 m/s^2 T = 96 N But I don't know how

    asked by JC
  23. Math

    A ladder is leaning against a building so that the distance from the ground to the top of the ladder is 4 feet less than the length of the ladder. Find the length of the ladder if the distance from the bottom of the ladder to the building is 8 feet.

    asked by Marcus
  24. physics

    A 200g mass is attached to a spring and allowed to execute simple harmonic motion with a period of 0.25seconds. If the total energy of the system is 2.0 joules, find the force constant of the spring and the amplitude of the motion.

    asked by Tina
  25. Intermediate Algebra

    Suppose a college bookstore buys a textbook from a publishing company and then marks up the price they paid for the book 33% and sells it to a student at the marked-up price. If the student pays $75.00 for the textbook, what did the bookstore pay for it?

    asked by Jon
  26. Math

    You are driving 2760 miles across the country during the first 3 days of your trip you drive 1380 miles. If you continue to drive at the same write each day, how many days will the entire trip take?

    asked by Cm
  27. Statistics

    Consider the probability that fewer than 17 out of 145 people will get the flu this winter. Assume the probability that a given person will get he flu this winter is 11%. Approximate the probability using the normal distribution. Round the answer to four

    asked by Jane
  28. math

    How much water must be added to 60 liters of 60 percent alcohol mixture to reduce it to a mixture of 50 percent alcohol concentration? What if 30 percent alcohol mixture is added instead of water?

    asked by Melvin
  29. public and health

    Which of the following statements is true? A. Carbon monoxide is a greenhouse gas B. The United States has effectively controlled its greenhouse gas emissions C. Emission of greenhouse gases by various countries is proportional to the size of their

    asked by Anonymous
  30. Chemistry

    Why do heteroatoms help determine the physical and chemical properties of a molecule? a They forms more bonds to other atoms than carbon can. b They possess nonbonding pairs of electrons and affect the molecule’s polarity. c They possess stronger bonds

    asked by Sabrina Megasion
  31. Physics

    A harmonic wave moving in the positive x direction has an amplitude of 4.4 cm, a speed of 41.0 cm/s, and a wavelength of 45.0 cm. Assume that the displacement is zero at x = 0 and t = 0. Calculate the displacement (in cm) due to the wave at x = 0.0 cm, t =

    asked by Trace
  32. Finance

    Variable rate loans typically have a 1)________ interest rate than fixed rate loans because with variable rate loans, the borrower assumes the risk that the interest rate might 2)_________. a. Higher, Increase b. Lower, Increase c. Higher, Decrease d.

    asked by Jamye
  33. Physics

    You hear the sonic boom of a high-speed jet plane exactly 3.10 s after it passes directly overhead in level flight. At the time you hear the boom, you see the plane at an angle of 22.0 o above the horizon. Assume that the speed of sound at the altitude of

    asked by Trace
  34. Health and communications

    Data on quality is available for all of the following except: A. Fee-for-service providers in Massachusetts B. Managed care plans in the U.S. C. Coronary surgeons in New York State D. Effective treatment of heart attack patients I cant seem understand this

    asked by Anonymous
  35. Physics

    A car traveling 35.0 m/s overtakes another car going only 22.0 m/s. When the faster car is still behind the slower one, it sounds a horn of frequency 1500.0Hz. What is the frequency heard by the driver of the slower car? What is the altitude of the plane?

    asked by Trace
  36. chemstry// organic

    How does a retrosynthetic analysis propose a way to synthesize an organic compound? a.The analysis begins with an easy to obtain starting material and then adding on individual atoms to make the desired product. b.The analysis begins with the product and

    asked by pipper stocking
  37. calculus 2

    how to find the integral of (3x+pi)cos3xdx from [pi over 6, pi over 3}

    asked by bern
  38. Physics

    A car traveling 35.0 m/s overtakes another car going only 22.0 m/s. When the faster car is still behind the slower one, it sounds a horn of frequency 1500.0Hz. What is the frequency heard by the driver of the slower car?

    asked by Trace
  39. Math

    How can you check the answer to a decimal multiplication problem

    asked by Caroline
  40. Thermo

    Argon in a rigid tank is heated from an initial state of 50 °C, 2 bar and 2m ³ to a final pressure of 8 bar. Determine the final temperature in °C to 2 decimal places. Argon cp=0.5203 kJ/kgK cv=0.3122 kJ/kgK

    asked by Zz
  41. algebra

    How much water must be added to 60 liters of 60 percent alcohol mixture to reduce it to a mixture of 50 percent alcohol concentration? What if 30 percent alcohol mixture is added instead of water?

    asked by Melvin
  42. algebra 1

    Tell whether the lines for each pair of equations are parallel, perpendicular, or neither. y=-4x+3 and -2x+8y=5 A. parallel B. perpendicular C. neither I think parallel?

    asked by sydney
  43. math

    The cylindrical tank has a radius of 5 feet and is 2/3 full of water. To the nearest cubic foot, how many cubic feet of water are in the tank?

    asked by Kulee
  44. Chemistry

    Glucose( C6H12O6) is produced by photosynthese. For every kilo of water the plant takes in ,how much glucose can it make ? I done the balanced equation wich is (I think) 6H2O+6CO2 = C6 H12 3O6 After that I get a ratio of 108/372 wich give me a tota of 3444

    asked by Karen
  45. algebra

    A perfume maker wishes to blend perfume valued at $ 410 an ounce with perfume worth $ 250 an ounce to obtain a mixture of 40 ounce worth $ 300 an ounce. How much of the $ 410 perfume should he use?

    asked by Melvin
  46. algebra 1

    Are y=-4x+3 and -2x+8y=5 parallel, perpendicular, or neither? I think neither?

    asked by sydney
  47. Chemistry

    29.25g of sodium chloride is added to water and undergoes electrolysis according to this equation 2Cl-=Cl2 Calculate the mass of chlorine produced. I am lost with this one !

    asked by Karen
  48. math

    hello I am new here my friend recommended me this website. here is my question: if a clock chimes the number of the hour every hour, how many times will it chime in a day?

    asked by ivan
  49. Chemistry

    Which of the labeled sections in the below molecule would be considered an unsaturated portion of the molecule? A) \ B)|| C) | \\\ /\ /|\ \ a. A and B b. B only c. C only d. B and C

    asked by Sabrina Megasion
  50. chemistry// organic

    This is a pushing question. We discussed how phenols are typically more acidic than alcohols, even though they both contain the same hydroxyl functional group, because phenols possess an aromatic ring that delocalizes the negative charge after a proton is

    asked by pipper stocking
  51. math

    The capacity of a rectangular tank is 5.2cubic metre and area of its base is 2.6×1000 square centimetres.find its height

    asked by Neha
  52. Math

    The sum of the digits of a three digit number is 20.The middle digit is equal to one fourth the sum of the other two. If the order of the digits is reversed the number increases by 198. Find original number

    asked by Rohan
  53. physics

    What is the maximum speed a car can travel over the top of a hill of radius 22 m before flying off the hill?

    asked by Brenna
  54. Algebra 1

    Write an equation that relates the number of parallelograms in the figure (n) to the perimeter of the figure (P) number 1. square has a 4 at each end and a 5 on the top of the square and one 5 on the bottom of the square number 2. 2 squares attached side

    asked by Deuce
  55. math

    limit x tends to infinity ( 1+root n)/(1-rootn)

    asked by Binoy kumar mahato
  56. Math

    How do you check the answer to a decimal multiplication problem plz explain your reasoning

    asked by Caroline
  57. math

    a van travelled 45km on 30 litres of diesel. How far could it travel on 45 litres?

    asked by logan
  58. Business law

    A contract cannot involve both and implied warranty of merchant ability and an implied warranty of

    asked by Kathy
  59. Chemistry (organic)

    What is the molecular formula for the below line-angle structure? The structure is a pentagon with one line connected to a corner. I'm sorry if that doesn't make any sense but the picture will not paste here. a C6H11 b C5H11 c C7H12 d C5H13 e C6H12 Thank

    asked by Sabrina Megasion
  60. chemistry// organic

    What type of reaction forms an alkaloid salt? a. The reaction between an amine and an alcohol. b. The reaction between an amine and an acid. c. The reaction between an alcohol and a base. d. The reaction between an amine and a base. e. The reaction between

    asked by pipper stocking
  61. algebra 1

    f(x) = 10(2)^x Is this function's rate of change over the interval -1 ≤ x ≤ 2 greater or less than that of the linear function g(x)=10x + 7? -- What is this problem asking me to do and how do I do it?

    asked by name
  62. Math

    The transformation T:R^2--》R^2 is defined by T(1,0)=(2,-5) and T(-3,2)=(1,4). Find the natural matrix of the linear transformation T and find T(x,y).

    asked by Phil
  63. Calculus

    Find dy/dx and express the final answer with a common denominator y=ln x^(2(4x-12))

    asked by Mike
  64. Science

    A runner compels one lap around a 300-m oval track, returning to her staring position. What distance does she cover, and what was her displacement? Explain.

    asked by Gianna
  65. calculus 2

    How to solve the definite integral of(3x+pi)cos3xdx from [pi over6,pi over 3]

    asked by bern
  66. Calculus

    Find dy/dx and express the final answer with a common denominator y=lnx^2(4x-12)

    asked by Mike
  67. Math

    The sum of the digits of a three digit number is 20. The middle digit is equal to one fourth the sum of the other two. If the order of degree is reversed the number increases by 198. Find the original number

    asked by Rohan
  68. Calculus

    Calculate the Riemann sum of the area under the curve of f(x)=9-x^2 between x=-2 and x=3 The answer I come up with is 10/3, but when I solve using integrals, the answer I get is 100/3. Am I doing something wrong?

    asked by Mike
  69. Math

    after a cyclist has gone 2/3 of her route, she gets a puncture in a tire. Finishing on foot, she spends twice as long walking as she did riding. How many times as fast does she ride as walk? I know that the answer is 4 but do not know how to get to this

    asked by Kelley
  70. math

    I have an equation of P=(170-3x)(x-25) How do I determine the y-intercept I know I can determine the x intercepts by setting x = to zero, so those are easy to find, but I'm not sure how to find the y-intercept. Thank you.

    asked by carly
  71. Math

    Suppose C and D are 2 × 2 matrices with det(C) = −3 and det(D) = 2. Find the determinant of the matrices 8C^3D2 and 5 C^-1

    asked by Amelia
  72. Math

    my family has a $6000/ month budget. we spend 1/3 of our budget on food, 1/4 on our mortgage, 1/5 for clothing, and 1/10 for childcare. How much money is left for other expenses

    asked by Kora
  73. 9th grade algebra

    what is the explicit formula of NOW . 3 = Next answer: y=______blank____________ thanks!

    asked by ania
  74. physics

    A certain sample of a pure quartz crystal has a mass of 276 grams and a volume 95.8cm^3. -what is the mass density of the sample? -what would be the volume of a larger quartz crystal of the same density if its mass is 1.138 kg? Help please!! Have been

    asked by Anonymous
  75. algrebra 2

    f(x)=2x-2 g(x)=4x+2 find (f0g)(x)

    asked by ethan
  76. Geometry

    M angle pqr =80 m arc pyr=80 find m arc pxr and m angle pqr

    asked by Roshni
  77. poetry and creative writing

    this needs a friend or sibling to do with but I don't have a sibling or a friend who is not busy. My parents have gone too work too. Can u help me instead? write a colourful description, using as many senses as possible. Describe a market or shop know to

    asked by matthio
  78. Chemistry

    What is the name of the below organic compound? | \ \ | | \/\/\/ This is kind of what it looks like sorry this looks so horrible the image would not copy over. a 1,1,3-triethylhexane b 3-ethyl-5-propylheptane c 3-propyl-5-ethylheptane d 3,5-diethyloctane

    asked by Sabrina Megasion
  79. Math - Steve

    I posted this question yesterday that you answered, so thank you, but how do I put this in my calculator to get this answer? If the exponential equation of best fit is y= 2.9046(1.9798)^x, when will the population be more than 13 million? How would I

    asked by Carly
  80. Geometry: Right Triangles

    In my math homework, it is asking me to find the height of a triangle. Does anyone know how to find the height of a triangle? If you could, could someone give me an example problem? Thanks a lot!

    asked by Anonymous
  81. Maths

    Only using 2357,what number is a three digit number that add by a four digit number and equals to a five digit number? You can only use zero on the last digit of the four digit number.

    asked by Eva
  82. Science

    Why does 1 hour and 15 minute is 1.25

    asked by Ssssssssssss
  83. algebra 1

    I need to find the slope of a line that is parallel to the x-axis, completely perpendicular. The answer choices are A. 0 B. 1 C. undefined D. infinity I'm thinking undefined?

    asked by sydney
  84. algrebra 2

    g(n)=-4n+2 h(n)=3n+3 Find (g0h)(n)

    asked by ethan
  85. math

    The tank has a radius of 5 feet and is 2/3 full of water. To the nearest cubic foot, how many cubic feet of water are in the tank?

    asked by Kulee
  86. pre calc

    why does x^4+7 and x^4 have the same derivative, meaning can someone explain to me why they are both equal to the derivative 4x^3?

    asked by homework
  87. calculus 2

    find the definite integral for 3x+pi for the fraction interval pi over 3 and pi over 6

    asked by bern
  88. Business [ Human Resource]

    What positions are under the Evalutaion manger?

    asked by Krystel
  89. Algebra I

    3x =y and 4x + y =70

    asked by Anonymous