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

asked on October 19, 2008
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.....

asked on March 14, 2019
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).

asked on September 14, 2011
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

asked on March 2, 2014
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

asked on March 1, 2014
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

asked on January 18, 2007
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

asked on April 10, 2017
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

asked on September 15, 2011
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

asked on May 17, 2009
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

asked on May 25, 2009
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?

asked on January 16, 2012
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

asked on March 2, 2014
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

asked on November 1, 2011
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

asked on May 15, 2007

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

asked on September 23, 2007
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?

asked on September 16, 2010
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

asked on November 2, 2008
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

asked on October 10, 2011
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

asked on January 25, 2007
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?

asked on July 5, 2011
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

asked on April 6, 2011
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?

asked on September 16, 2010
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

asked on October 15, 2008
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

asked on October 7, 2010
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

asked on January 14, 2016
26. com 150

14 words how are items arranged in a reference list?

asked on July 28, 2008
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?

asked on September 27, 2010
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?

asked on October 27, 2009
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

asked on May 14, 2007
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?

asked on October 9, 2019
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

asked on February 5, 2007
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

asked on January 22, 2012
33. physics

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

asked on October 17, 2010
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

asked on November 17, 2010
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?

asked on September 12, 2010
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

asked on October 14, 2008
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?

asked on February 22, 2016
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

asked on October 18, 2010
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

asked on December 14, 2018
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?

asked on January 17, 2012
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

asked on October 22, 2009
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

asked on November 17, 2010
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

asked on November 17, 2010
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

asked on October 3, 2008
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

asked on September 24, 2007
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

asked on February 6, 2007
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

asked on October 19, 2013
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

asked on October 15, 2008
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

asked on March 2, 2014
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?

asked on February 1, 2009
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

asked on January 19, 2009

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

asked on January 5, 2008
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

asked on May 14, 2007
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

asked on April 26, 2007
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

asked on January 7, 2007
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

asked on February 12, 2017
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

asked on March 2, 2014
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

asked on October 15, 2008
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

asked on January 29, 2007
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

asked on November 25, 2015
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?

asked on November 25, 2015
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

asked on July 26, 2013
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?

asked on September 15, 2011
64. North & Central America

canals affect which of the 5 themes of geography the most

asked on September 17, 2010
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 =

asked on March 27, 2010
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

asked on February 1, 2009
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

asked on November 2, 2008
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

asked on January 6, 2008
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

asked on May 15, 2007
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!

asked on March 29, 2018
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

asked on March 1, 2014
72. GEOMETRY

WHAT ARE GEOMETRIC MEANS PLEASE SOMEBODY HELP

asked on November 17, 2008
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.

asked on November 1, 2008
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)

asked on October 15, 2008
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

asked on May 15, 2007
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.

asked on February 4, 2007
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

asked on April 21, 2016
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.

asked on March 3, 2015
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

asked on September 15, 2011
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

asked on March 12, 2011
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.]

asked on February 10, 2011
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

asked on January 20, 2011
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.

asked on November 10, 2009

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

asked on April 16, 2009
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.

asked on May 18, 2007
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. =)

asked on May 14, 2007
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. =)

asked on April 25, 2007
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

asked on February 4, 2007
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

asked on October 6, 2017
90. Math

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

asked on April 9, 2017
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?

asked on May 31, 2016
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

asked on July 6, 2015
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

asked on September 14, 2011
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.

asked on April 6, 2011
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

asked on February 1, 2009
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

asked on January 19, 2009
97. biology

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

asked on September 15, 2008
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

asked on March 18, 2008
99. ap chemistry

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

asked on December 10, 2007
100. AP biology

I posted this question three days ago but no one answered. Hi you guys I am having trouble with the "cell communication" chapter so I would really appreaciate if someone could help out with this question "What could happen to the target cells in an animal

asked on December 6, 2007

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