# claudia

Most popular questions and responses by claudia
1. ## 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

2. ## Social studies

What was the most valuable item traded between French colonists and native Americans? A. Sugar B. Slaves C. Spices D. Furs I choose A can someone check my answer? Thanks.....

3. ## 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).

4. ## 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

5. ## 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

6. ## chemistry calorimetry

how can i get the mass of a liquid when i'm given the heat enrgy that is added, and the specific heat of the liquid to which is added, plus the increase in temperature. q = mass x specific heat x (Tf - Ti) q is heat in Joules. mass in grams specific heat

7. ## 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

8. ## 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

9. ## 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

10. ## 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

11. ## 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?

12. ## 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

13. ## 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

14. ## math

A parabola has the equation y = 4(x-3)^2-7 Choose 2 true statements: A) The parabola has a minimum value B) The parabola has a maximum value C) The parabola does not cross the y-axis D) The parabola does not cross the x-axis E) The vertex of the parabola

I would appreciate very much If you guys could show me how to approach this problem. A solution is prepared by dissolving 10.8g of ammonium sulfate in enough water to make 100.0mL of stock solution. A 10.00mL sample of this stock solution is added to

16. ## 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?

17. ## 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

18. ## 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

19. ## Algebra

I'm suppose to write an equation with the following information: Line passes through (2,-6) and is parallel to x=8 I know i must use the slope point form the problem is that since x=8 I don not know which is the slope. Please help me :) The line for x=8 is

20. ## 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?

21. ## 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

22. ## 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?

23. ## physics

ok im doing my physics homework and we have to submit the answers online. i keep getting these questions wrong and i only have one more try can someone please tell me how to work it? a 2.5 kg otter starts from rest at the top of a muddy incline 94.6 cm

24. ## 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

25. ## 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

26. ## com 150

14 words how are items arranged in a reference list?

27. ## 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?

28. ## 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?

29. ## math

A parabola has the equation y = 4(x-3)^2-7 Choose 2 true statements: A) The parabola has a minimum value B) The parabola has a maximum value C) The parabola does not cross the y-axis D) The parabola does not cross the x-axis E) The vertex of the parabola

30. ## physical science

A stone is placed in a graduated cylinder, which has been filled to the 35-mL mark. The level rises to 42 mL. What is the volume of the stone?

31. ## sorry again

I n]have to find four crystalline substances and i found diamonds, salt and sugar can you guys give me two more. the reason why two is because I don't have diamonds to take to the classroom. Look at your earrings...fake diamonds, are crystalline, unless

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

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

34. ## 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

35. ## 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?

36. ## physics

four forces act on a hot air ballon 356 N north 129 N west 297 N east 156 N south a)find the magnitude of the resultant force on the balloon. i already found this one out. i got magnitude to be 261.197N b) find the direction of the resultant force (in

37. ## 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?

38. ## 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

39. ## chemistry

At 35 degrees C, 2.0 mmol of pure NOCI is introduced into a 2.0-L flask. The NOCI partially decomposes according to the following equilibrium equation. 2 NOCI = 2 NO + CI2 at equilibrium the concentration of NO is 0.032 mol?L. Use an ICE table to determine

40. ## 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?

41. ## 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

42. ## 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

43. ## 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

44. ## PHYSICS

Could u help with physics hw! i keep trying but i keep getting the wrong answer? a 71g autographed baseball slides off of a 1.3 m high table and strikes the floor a horizontal distance of .83m away from the table. 1.how fast was it rolling on the table

45. ## chemitstry

I would like if you guys could answer me this question or give me a website where I cold find the answer. Lead, mercury and plutonium are very harmful elements, but when you cobined them with what do they become harmless? The element with which they must

46. ## chemistry

I was asked to bring something into class with a pressure less than 1.0 atm, after researching i found out that if I heated a bottle it will shrink and therefore this bottle will have the needed pressure. the problem is that after I put the bottle inside

47. ## 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

48. ## physics

two men decide to use their cars to pull a truck stuck in mud. They attach ropes and one pulls with a force of 688 N at an angle of 28° with respect to the direction in which the truck is headed, while the other car pulls with a force of 896 N at an angle

49. ## 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

50. ## 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?

51. ## 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

Even though I know what random selection, directional selection, stabilizing selection, disruptive selection and sexual selection are I can not understant what does Starlings producing five eggs in each clutch has to do with it. In my final I got this

53. ## math

Snell's law of refraction can be written as sin i = n sin r, where n is the refractive index from air to water, i is the angle of incidence, and r is the angle of refraction. In an experiment where a ray of light is directed from air into water, if the

54. ## chemistry

Hi I did some tests with the litmus paper, and I would like to know if they are correct:) Thing tested What I got *distilled water neutral *liquid soap Distilled water should be neutral. You didn't type the results of the pH test on liquid soap. It could

55. ## Mathematics

Neeka gave one fifth of her mangoes to her brother, she sold five eighths of the remainder, she was left with 12 mangoes. How many mangoes did she have in the first place? 4/5 M*(3/8)=12 This says she has 3/8 of 4/5 of the original mangos. Or you could do

56. ## 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

57. ## 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

58. ## physics

a 5.9 kg bucket of water is raised from a well by a rope. the acceleration of gravity is 9.81 m/s^2 if the upward acceleration of the bucket is 4.0 m/s^2 what is the force exerted by the rope on the bucket of water. in units of N

59. ## chemistry

Hi i'm supposed to find a hydrocarbon with a molecular mas greater than 100g/mol, and i have no clue by using this properties what it is. Please help me:0 There must be a million hydrocarbons with a molar mass > 100. Knowing carbon is 12, C9 something

60. ## 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

61. ## 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?

62. ## 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

63. ## 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?

64. ## North & Central America

canals affect which of the 5 themes of geography the most

65. ## 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 =

66. ## 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

67. ## 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

68. ## ap biology

Even though I know what random selection, directional selection, stabilizing selection, disruptive selection and sexual selection are I can not understant what does Starlings producing five eggs in each clutch has to do with it. In my final I got this

69. ## math

Snell's law of refraction can be written as sin i = n sin r, where n is the refractive index from air to water, i is the angle of incidence, and r is the angle of refraction. In an experiment where a ray of light is directed from air into water, if the

70. ## 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!

71. ## 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

72. ## GEOMETRY

WHAT ARE GEOMETRIC MEANS PLEASE SOMEBODY HELP

73. ## 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.

74. ## physics

two lifeguards pull on ropes attached to a raft. If they pull in the same direction, the raft experiences a net external force of 341 N to the right. If they pull in opposite directions, the raft experiences a net external force of 108 N to the left. a)

75. ## english

Do all authors that write novels are literary writers? For example Hemingway is a literary writer and he writes novels. Will F. Scott Fitzgerald also be a literary writer since he is a novelist? yes. Check a dictionary, either dead tree or online, for a

76. ## chemistry

how do I get the percent deviation of a value? I got he answer already thanks any way:) What is the highest fluride of Uuh? answered above.

77. ## 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

78. ## 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.

79. ## 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

80. ## Finance

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

81. ## 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.]

82. ## ss

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

83. ## 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.

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

85. ## math help

What is the distance Y Z in metres between the boat and the bouy, to 2 significant figures? A surveyor, standing at an observation point on a cliff top of a height 300m above sea level, can see a boat and a bouy out at sea, both directly in front of him.

86. ## math

I have an equation: 2x + 3 = 11 is this correct? x = 4? Can you show me the workings Yup 2x + 3 = 11 Subtract 3 from each side, and you get 2x = 8 Divide both sides by 2, and you get x = 4. =)

87. ## english

what is a literary writer? Someone who writes literature? http://www.answers.com/literary Then comes the question of which works are considered literature and which are not. =)

88. ## chemistry

I can't find a substance apart of water with a pH of 7,so i have a question, i don't know if water is the only neutral substance or if there are more which one's are those? Any salt solution that doesn't hydrolyze in water will be neutral. Any liquid

89. ## 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

90. ## Math

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

91. ## 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?

92. ## 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

93. ## 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

94. ## 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.

95. ## 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

96. ## 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

97. ## biology

Research indicates that acid precipitation can damage living organisms by what?

98. ## earth

if the tilt of the earth's axis was increased beyond 23.5 degrees, will it cause seasonal variation in the equator to decrease? if the earth's axis becomes perpendicular to the orbital plane between the earth and the sun will it increase the length of

99. ## ap chemistry

How can I calculate the exothermic lattice energy when all I am given is the compound formula LiF?