Claudia

Newest questions posted by Claudia
  1. Calculus 1

    Hi! Can I get some help with this questions. I am very confused about how to approach it. Find the point on the curve y=5x+4 closest to the point (0,6). Thank you!
  2. Home Economics

    The pricing of pharmaceutical products can be controversial. A recent example is EpiPen produced by Mylan which is used to treat anaphylaxis. The retail price of an EpiPen is $300, while industry sources estimate that it costs around $30 to produce each
  3. Physics

    If a sound has a wavelength of 3 m, what is its frequency? Use 340 m/s for its speed of sound.
  4. mat

    Two cargo ships are siling a direct course into harbor. Ship A is 22 miles from harbor. Ship B is sailing into harbor on a course perpendicular to that of ship A. If the angle between them is 47 degrees, how far is ship B from the harbor? Round the answer
  5. Math

    David uses 1/3 cup of apple juice for every 1/2 cup of cranberry juice to make a fruit drink.
  6. Algebra

    The speed of a moving sidewalk at an airport is 3 ​ft/sec. A person can walk 79 ft forward on the moving sidewalk in the same time it takes to walk 15 ft on a nonmoving sidewalk in the opposite direction. At what rate would a person walk on a
  7. maths

    A rectangular box with given dimensions length=80m, width=64m and height=48m. Has its two largest sides painted green. what percentage of the total area is painted green?
  8. Math

    A fully opened parachute is shaped like a hemisphere and has a diameter of 8m. Which of the following is closet to the volume of air that can fit in the fully opened parachute a)134m3 b)268m3 c)1072m3 d)2145m3
  9. math

    Two people start at the same point One walks east at 2mph and the other walks southwest at 3mph. How fast is the distance between them changing after 30 minutes?
  10. Language Arts

    1. Choose the meaning that best matches the word in capitals: After eating a second piece of cake, my CONSCIENCE began to eat me! A. being fully aware B. gaining knowledge C. feeling of satisfaction D. knowing what is right and wrong** I think D
  11. Physics

    In this sound interferometer, sound waves enter at A and travel to C via paths ABC and ADC. the intensity of the sound can be determined by the microphone placed at C. The length of the path ADC can be changed by a sliding tube. The frequency is fixed at a
  12. Maths

    The temperature is shown at 6:00am. It is rising at one degree every thirty minutes. At this rate, it will be 20 degrees at what time?
  13. physics

    In all parts: assume the the air temperature is 17.8o C, so the speed of sound in air is 342.0 m/s. Part A. Suppose a ship's foghorn is sounded toward an iceberg, and an echo is heard 6.16 s later. Find the distance from the ship to the iceberg. d = ? m
  14. Emerson

    I'm helping my son he is in 4th grade . His hw it's hard and this is the problem : find two mixed numbers. So that the sum is 7 2/8 and the difference 2 4/8.
  15. easy,fun math

    Belle gets 3 buckets of fish evreyday. there are 8 fish in each bucket.if Belle eats two and a half buckets of fish,how many fish will she eat?
  16. 4th grd math

    Belle gets 3 buckets of fish evreyday. there are 8 fish in each bucket.if Belle eats two and a half buckets of fish,how many fish will she have left
  17. algebra

    find two point for the following equation and plot the point on graph 4x=5
  18. Math

    The student activities department of a community college plans to rent buses and vans for a spring-break trip. Each bus has 40 regular seats and 1 handicapped seat; each van has 8 regular seats and 3 handicapped seats. The rental cost is $305 for each van
  19. Math

    2)Banquet Seating A banquet hall offers two types of tables for rent: 6-person rectangular tables at a cost of $26 each and 10-person round tables at a cost of $51 each. Kathleen would like to rent the hall for a wedding banquet and needs tables for 250
  20. Math

    A financial consultant wishes to invest up to a total of $33,000 in two types of securities, one that yields 8% per year and another that yields 6% per year. Furthermore, she believes that the amount invested in the first security should be at most
  21. MATH

    A financial consultant wishes to invest up to a total of $33,000 in two types of securities, one that yields 8% per year and another that yields 6% per year. Furthermore, she believes that the amount invested in the first security should be at most
  22. Math

    Manufacturing A factory manufactures two products, each requiring the use of three machines. The first machine can be used at most 70 hours; the second machine at most 40 hours; and the third machine at most 90 hours. The first product requires 2 hours on
  23. Math

    Manufacturing A factory manufactures two products, each requiring the use of three machines. The first machine can be used at most hours; the second machine at most hours; and the third machine at most hours. The first product requires hours on machine
  24. math

    What is 27 times 3/8
  25. CHEMISTRY

    A garden fertilizer contains 15% by mass of nitrogen. The recommended usage is 30g of fertilizer per 10dm^3 of water. What is the concentration of nitrogen in this solution? a)0.15 g dm^-3 b)0.30 g dm^-3 c)0.45 g dm^-3 d)3.00 g dm^-3
  26. Math

    The variables x and y are related by the equation y=ax/(x-b),where a and b are constants .When y is plotted against y/x ,a straight line is obtained .The line has gradient 3 and y-intercept 2. (i)Find the values of a and b (ii)Find the values of x which
  27. math

    A diagram shows a straight line graph of In y against x,passing through the point (0,2) and having gradient -3/2 . The variables x and y are connected by the equation y=pq^x ,where p and q are constants Find (i)the value of p and of q ,to one decimal place
  28. math

    1.Express (xe^x)^2=30e^(-x) in the form lnx=ax+b,and find the value of a and of b . 2.solve 4(3^2x)=e^x
  29. Reading

    Do you have the story animal senses
  30. algebra

    solve each system by elimination 9x-6y=-30 x-3y=6
  31. math

    write a 4-digit number with a 0 in the hundreds place and a 0 in the tens place.Now write another number,using the same four digits and tell which number is larger.
  32. math

    In a group of 9 coins, one is fake and weighs slightly more. What is the fewest number of times you need to use a pan balance to find the counterfeit coins? (A pan balance is a scale used to measure weights, where weights are placed in two pans. The
  33. Physics

    Identical +6.15 µC charges are fixed to adjacent corners of a square. What charge (magnitude and algebraic sign) should be fixed to one of the empty corners, so that the total electric potential at the remaining empty corner is 0 V?
  34. Math

    A coin is tossed three times. If heads appears on all 3 tosses, Mary will win $16. If heads appears on 2 of the tosses, she will win $2. The game costs $5 to play. What is her mean expectation?
  35. physics

    A 1000kg rocket is moving forward at 10m/s in space. A 10,000N force is applied to the rocket for one second from behind. How fast is the rocket now traveling? a. 0m/s b. 10m/s c. 15m/s d. 20m/s
  36. physics

    For women's volleyball the top of the net is 2.24 m above the floor and the court measures 9.0 m by 9.0 m on each side of the net. Using a jump serve, a player strikes the ball at a point that is 3.03 m above the floor and a horizontal distance of 8.4 m
  37. science

    if each person in the red team is pulling a rope with a force of 250N and each person in the blue team is pulling with a force of 200N what is the total force excerted by the blue team?
  38. Biology

    Can someone please check my answers for the following 'choose the best answer'? Which of the following cellular functions would be most directly related to a malfunction of the Golgi apparatus? a)ATP production b)degradation of macromolecules c)secretion
  39. Biology

    Can someone please check my answers for the following 'choose the best answer'? Which of the following cellular functions would be most directly related to a malfunction of the Golgi apparatus? a)ATP production b)degradation of macromolecules c)secretion
  40. Calculus

    Please help? Let F(a) be the area between the x-axis and the graph of y=x^2cos(x/4) between x=0 and x=a, for a>0 (consider the area to be negative if the graph lies below the axis). Find the formula for F(a).
  41. Biology

    Can someone please check my answers for the following 'choose the best answer'? Which of the following cellular functions would be most directly related to a malfunction of the Golgi apparatus? a)ATP production b)degradation of macromolecules c)secretion
  42. Including students with special needs

    How could you use the notion of behavior functions to understand how students can find and press teachers' "hot buttons"?
  43. Including students with special needs.

    How does this approach differ from traditional responses to student behavior?
  44. Including Students with Special needs.

    How would understanding the function of a student's behavior influence your response to it?
  45. Mathematics

    Identify the slope and y-intercept of the following table values. x 5,10,15,20,25 y -80,-40,0,40,80
  46. Chemistry

    Vinegar is a dilute solution of acetic acid. What is the concentration of acetic acid in the vinegar if 26.5 mL of NaOH at 0.250 M are required to neutralize 10.0 mL of vinegar?
  47. Calculus (pleas help!!!)

    Let p(x)=x^2(a−x), where a is constant and a greater than 0. Find the local maxima and minima of p. (Enter your maxima and minima as comma-separated xvalue,classification pairs. For example, if you found that x=−2 was a local minimum and x=3 was a
  48. Calculus (urgent!!)

    Find a formula for a curve of the form y=e^((−(x−a)^2)/b) for b greater than 0 with a local maximum at x=−5 and points of inflection at x=−8 and x=−2.
  49. Calculus (urgent!!)

    Find a formula for a curve of the form y=e^((−(x−a)^2)/b) for b greater than 0 with a local maximum at x=−5 and points of inflection at x=−8 and x=−2.
  50. Calculus Please Help

    Find a formula for a curve of the form y=e^((−(x−a)^2)/b) for b greater than 0 with a local maximum at x=−5 and points of inflection at x=−8 and x=−2.
  51. Calculus (pleas help!!!)

    Find a formula for a curve of the form y=e^((−(x−a)^2)/b) for b greater than 0 with a local maximum at x=−5 and points of inflection at x=−8 and x=−2.
  52. Finance

    what would be your monthly car payment on a $15000 4 year loan @ 10%. Payments are made at the end of each month
  53. physics

    A cannon on a stationery railway truck fires a shell of mass 5 kg with a velocity of 240 m.s -1. The mass of the cannon is 600kg. The cannon recoils and moves back on the rails and collides with a stationery truck of mass 400 kg. The velocity of the cannon
  54. physics

    an aeroplane of mass 8000kg flying at 600km.h-1 fires a projectile of mass 100kg at a speed of 900 km.h-1. Calculate the velocity of the aeroplane after firing if the projectile was fired a)forward b) backward
  55. physics

    truck A of mass 2,5 x 10(4) kg approaches a second truck B of mass 2 x 10(4) kg with a velocity of 12 m.s -1 and collides with it. After collision the two trucks move apart with equal but opposite momenta. Calculate what the velocity of B was before the
  56. physics

    A laden lorry of mass 3000kg travelling due east at 40 m.s -1 collides head on with a large truck of mass 2000kg travelling at 30 m.s -1. the two vehicles combine during the collision. Calculate the velocity with which the two wrecks move after collision.]
  57. ss

    the americans claimed to fight for liberty and freedom. how did these ideals make women amd enslaved africans question their postitions in society
  58. chemistry

    What is the pH of a solution prepared to contain 155 grams of HCl in 200.0 mL? Can you tell me how to do it? I can't remember how...
  59. philosophy

    Supply the missing premise or conclusion of the ff. enthymeme in such a way that the resulting syllogism is valid. Write the resulting syllogism in standard form and test it for validity using a Venn diagram. What things would you take into account in
  60. philosophy

    Supply the missing premise or conclusion of the ff. enthymeme in such a way that the resulting syllogism is valid. Write the resulting syllogism in standard form and test it for validity using a Venn diagram. What things would you take into account in
  61. philosophy

    Supply the missing premise or conclusion of the ff. enthymeme in such a way that the resulting syllogism is valid. Write the resulting syllogism in standard form and test it for validity using a Venn diagram. What things would you into account in
  62. Chemistry

    Substance A has a melting point of -10 degree celcius and a boiling point of 57 degree celcius. Sunstance B has a melting point of -67 degree celius and a boiling point of 15 degree celius. Room temperature is 20 degree celcius. (A) What is the physical
  63. physics

    in what direction should a force be applied to produce maximum torque.?
  64. Math

    I need to solve for t in the following expression. A/(1+B^t/2) = C using logarithms. how do I get started
  65. Math analysis

    I have a problem that says to Use the laws of logarithms to expand and simplify the expression. ln(x(x + 1)(x + 2)) .. I keep getting ln(x)+ln(x^2+3x+2) but I'm wrong. What im i doing incorrectly?
  66. economics

    Studies indicate that the price elasticity of demand for cigarettes is about 0.4. If a pack of cigarettes currently costs $4 and the government wants to reduce smoking by 20 per cent, by how much should it increase the price? Show your calculations. (b) If
  67. physics

    A brick is thrown upward from the top of a building at an angle of 15° to the horizontal and with an initial speed of 16 m/s. If the brick is in flight for 2.8 s, how tall is the building?
  68. North & Central America

    canals affect which of the 5 themes of geography the most
  69. physics

    A certain freely falling object requires 1.25 s to travel the last 35.5 m before it hits the ground. From what height above the ground did it fall?
  70. physics

    Races are timed to an accuracy of 1/1000 of a second. What distance could a person rollerblading at a speed of 8.5 m/s travel in that period of time?
  71. physics

    TWO LOCOMOTIVES APPROACH EACH OTHER ON PARALLEL TRACKS. EACH HAS A SPEED OF 95KM/H WITH RESPECT TO THE GROUNG. IF THEY ARE INITIALLY 8.5KM APART, HOW LONG WILL IT BE BEFORE THEY REACH EACH OTHER?
  72. Business Economics

    "How do I find out which manufactures in the US sell the most Oxygen Concentrators?"
  73. Physics 121

    A bicycle wheel has a radius R = 32 cm and a mass M = 1:80 kg which you may assume to be concentrated on the outside radius. Assume that you apply a force F to a sprocket so that the wheel has an angular acceleration ® = 4:50 rad/s2. A resistive force f =
  74. Calculus

    What's the antiderivative of x(2x-6)^(1/2)?
  75. ecology

    Which level of organism has the least energy available to it a) beetle c)sparrow b)spider d) hawk *maple tree->beetle->spider-->sparrow->hawk explain how you know, why because its primary, secondary, decomposer etc...
  76. Math

    Determine the future value of an annuity due into which quarterly deposits of $450 are made for nine years if the annuity pays 10% compounded quarterly.
  77. science

    At its highest point, the pendulum is 1.2m above the ground and as a gravitational potential energy of 62J. If the gravitational potential energy is 10J at its lowest point, what is the pendulum's kinectic energy at this point?
  78. calculus

    When air expands adiabatically (without gaining or losing heat), its pressure P and volume V are related by the equation PV^{1.4}=C where C is a constant. Suppose that at a certain instant the volume is 340 cubic centimeters and the pressure is 87 kPa and
  79. us history

    list some of the advantages of using indentured servants
  80. us history

    american value that was developed during the enlightment?
  81. AED 203

    what is your approach to teaching? How does inquiry-based learning differ from the traditional model, with the teacher as the source of all instruction? Provide examples of each style.
  82. science

    what is your approach to teaching? How does inquiry-based learning differ from the traditional model, with the teacher as the source of all instruction? Provide examples of each style.
  83. AED 203 classroom Instruction

    What is the different approaches you can use for teaching controversial versus noncontroversial subjects. Identify the subjects and then provide a specific example of each type of instruction?
  84. Chemistry

    The mass of a single barium atom is 2.28E-22 grams. How many barium atoms would there be in 37.4 milligrams of barium
  85. physics

    the relationship bwtween frequency, wavelength, and speed holds for light waves because all forms of electromagnetic radiation travel at a single speed in a vaccum. is this true?? or do different forms of electromagnetic radiation travel at different
  86. physics

    consider a concave mirror with a focal length of 13.72cm, and the object distance is 6.86cm, i calculated and found the image distance to be -13.72cm and a magnification of 2 how would i describe the image. 1. virtual, inverted, larger 2. none of these 3.
  87. physics

    ok the question is: consider a concave mirror with a focal length of 13.72 cm find the image distance when the object distance is 6.86 cm. ok so i did 1/6.86 + 1/q = 1/13.72 so 1/q = -.0728862974 is this right?
  88. 12th grade

    If an economy has elements of more than one economic system. it is a ________.
  89. CHemisty

    Taking the mass of the atmosphere to be 5.7E15 metric tons, what mass of carbon must be burned in order to increase the average carbon dioxide level in the atmosphere by 150ppm by volume (in metric tons)? what equations do i use?
  90. Chemistry

    Calculate the concentration of SO2(ppm) that must be reached in polluted air (in ppm) if the dissolved gas is to produce a pH of 4.1 in raindrops without any oxidation of the gas. Hint: Sulfurous acid equilibria how would i do this. what equations would i
  91. Physics

    Given: cp,ice = 2090 J/kg◦C cp,water = 4186 J/kg ·◦C cp,steam = 2010 J/kg ◦C Lf = 3.33 × 105 J/kg Lv = 2.26 × 106 J/kg How much energy is required to change a 37 g ice cube from ice at −10◦C to steam at 116◦C? Answer in units of J. ok.. so
  92. physics

    a 3.5 kg rectangular air mattress is 2.73m long, 1.1m wide, and .124m thick. what mass can it support in water befor sinking? answer in units of kg. so do i do volume times density=mass? 3.5*2.73*1.1*.124=1.303302
  93. physics

    a physics book has a height of 26cm, a width of 23cm, and a thickness of 3.9cm. what is the density of the physics book if it weighs 17N? the acceleration of gravity is 9.81m/s^2. answer in units of kg/m^3 i know density=mass/volume but it says to answer
  94. math

    How do you estimate and calulate quotients with decimals
  95. GEOMETRY

    WHAT ARE GEOMETRIC MEANS PLEASE SOMEBODY HELP
  96. physics

    ok i need help on this other question please A 56.0 kg skier is at the top of a slope. At the initial point A, the skier is 14.0 m vertically above the final point B. (a) find the difference in gravitational potential energy associated with the skier at
  97. physics

    i need help it says a shopper in a supermarket pushes a cart with a force of 36N directed at an angle of 26 degrees downward from the horizontal. Find the work done by the shopper on the cart as the shopper moves along a 50.6m length aisle. answer in units
  98. physics

    ok it says a shopper in a supermarket pushes a cart with a force of 36N directed at an angle of 26 degrees downward from the horizontal. find the work done by the shopper on the cart as the shopper moves along a 50.6m length of aisle. answer in units of J.
  99. just a question

    why are the small events of life important to you? i say that how you treat the small everyday events of life is a microcosm of how you will handle bigger issues.
  100. math

    what are the similarities and differences between an arithmetic sequence and a linear equation? ok i know that arithmetic sequence is a sequence of real numbers for which each term is the previous term plus a constant (called the common difference). For

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