1. Physics

Two forces are applied to a car in an effort to move it, as shown in the following figure, where F1 = 402 N and F2 = 364 N. (Assume up and to the right as positive directions.)(F1 is 10degrees and F2 is 30degrees) (a) What is the resultant of these two

2. chemistry

In the reaction 2SO2 (g) + O2 (g) 2SO3 (g), which change would cause the greatest increase in the concentration of SO3?

3. math

a fire fighter's 36 foot ladder leans against a building. the top of the ladder touches the buliding 28 ft above the ground. what is the measure of the angle of the ladder forms with the ground?

4. Biology

Which term describes an organism's ability to maintain a stable internal environment? (1) reproduction (2) extinction (3) locomotion (4) regulation

5. PreCalc - Vectors

An airplane is flying with an airspeed of 660 Kilometers per hour. The wind is blowing from 345 degrees at 35 km/h. What direction should the airplane take so that, with the wind, the plane will be flying in a direction of 72 degrees? I can compute

6. Physics

An outfielder throws a 0.150 kg baseball at a speed of 26.0 m/s and an initial angle of 30.0°. What is the kinetic energy of the ball at the highest point of its motion?

7. physics

Calculate the force, required of the "deltoid" muscle to hold up the outstretched arm shown in the figure . The total mass of the arm is 2.9 kg.

8. careers- school ties discussion questions

What was Dillon's fundamental problem in the move ''School Ties''

9. trig confused.. pls help

A group of mountain climbers are using trigonometry to find the height of a mountain located in the Rockies. From point A, which is due west of the mountain, the angle of elevation to the top is 56 degrees. From point B, which is due east of the mountain,

10. Physics

An electric motor rotating a workshop grinding wheel at a rate of 95 rev/min is switched off. Assume the wheel has a constant negative angular acceleration of magnitude 2.40 rad/s2. (a) How long does it take for the grinding wheel to stop? (b) Through how

11. Physics

A 7.80-g bullet moving at 530 m/s penetrates a tree trunk to a depth of 6.2 cm. (a) Use work and energy considerations to find the average frictional force that stops the bullet. (b) Assuming the friction force is constant, determine how much time elapses

12. Physics

A ski jumper starts from rest 51.0 m above the ground on a frictionless track and flies off the track at an angle of 45.0° above the horizontal and at a height of 12.0 m above the ground. Neglect air resistance. (a) What is her speed when she leaves the

13. Chemestry

The covalent compounds ethyl alcohol and dimethyl ether have the formula C2H6O. However, the alcohol melts at -117.3 degrees C and boils at 78.5 degrees C the ether melts at -138.5 degrees C and boils at -23.7 degrees C. How could differences in forces

14. science

2Al+3H2SO4--> Al2(SO4)3+3H2 a.)determine the oxidation number of each element in both the reaction and products of this oxidation-reduction reaction of aluminum and sulfuric acid. b.) what element is oxidized in this reaction? c.) what element reduces in

15. math

The ratio of kangaroos to koalas is9 to5. If there were 414kangaroos how many koalas were there? 5/14=x/414 14x=2070 x=147r12 correct?? if this is correct what is the proper way to write the answer or would you just write it as it is shown?

16. PHYSICS !!!!!!!!!!!!!!!!!!!!!!!!!!!!

a wave has a frequency of 2 Hz. find its period ? please show work.....

17. Chem22

Calculate ΔG (in kJ) for the reaction: CO2(g) + CCl4(g) = 2 COCl2(g) at 25oC under the conditions: CO2 = 0.120 atm, CCl4 = 0.162 atm, and COCl2 = 0.856 atm.

18. chemistry

why would a polystyrene cup be used in an exothermic reaction between HCl and NaOH instead of a beaker?

19. Pre-Algebra

Bonita and Deion are using the spinners from the Making Purple game in Problem 2.1. They take turns spinning. If the colors on the two spinners make purple, Dion scores. If they do not make purple, Bonita scores. For this to be a fair game, how many points

20. stastics

A survey of drivers in the United States found that 15% never use a cell phone while driving. Suppose that drivers arrive at random at an auto inspection station. a. If the inspector checks 10 drivers, what is the probability that at least one driver never

21. physics

Calculate the magnitudes of the gravitational forces exerted on the Moon by the Sun and by the Earth when the two forces are in direct competition, that is, when the Sun, Moon, and Earth are aligned with the Moon between the Sun and the Earth. (This

22. physics

a wheel starts from rest and rotates with a constant angular acceleration and reaches an angular speed of 12 rad/sec in 3 sec. find the angle through which it rotates in this time.

23. MATHS

Evaluate with the help of Logarithms 1) 2391/3072 2.38*3.901/4.83

24. Chemistry

How many grams of sodium azide are required to produce 31 grams of nitrogen

25. Physics

A 55.0 kg ice skater is moving at 4.04 m/s when she grabs the loose end of a rope, the opposite end of which is tied to a pole. She then moves in a circle of radius 0.795 m around the pole. (a) Determine the force exerted by the horizontal rope on her

26. geometry

On a sunny day an office building casts a shadow that is 80 feet long. At the same time, a 5 foot person casts a 6 foot shadow. Determine the height of the office building to the nearest

27. Chemistry

What is the pH for the potassium propionate solution at the equivalence point?

28. algebra

a bag contains 4 red chips, 2 blue chips and 5 green chips. A chip is randomly removed from the bag, and then without replacing the first chip, a second chip is removed. What is the probability that both of the chips selected from the bag were blue?

29. physics-momentum HELP PLEASE tesst in two days

A student flings a 2.3g ball of putty at a 225g cart sitting on a slanted air track that is 1.5m long. The track is slanted at an angle of 25 degrees with the horizontal. If the putty is travelling at 4.2 m/s when it hits the cart, will the cart reach the

Steamatic of Kansas City Inc specialized in cleaning and restoring property damaged by fire, smoke, water, or other elements. It employed Rhea as a marketing rep. His duties included soliciting customers, preparing cost estimates, supervising restoration

31. how to write 2nd may 2011 in 5 letters without usi

how to write 2nd may 2011 in 5 letters without using numbers

32. Physics

Two objects with masses of 1.00 kg and 7.00 kg are connected by a light string that passes over a frictionless pulley as in the figure below. (a) Determine the tension in the string. (b) Determine the acceleration of each object. (c) Determine the distance

33. consumer math

Jane lives in Middleton, where the tax rate is 2.9%. Her property is assessed at \$189,000. What is her tax?

34. 6 Entropy

Using the thermodynamic data provided below, calculate the standard change in entropy when one mole of sodium nitrate is dissolved in water? S° (J/K•mol) NaNO3(s) 116.3 Na+(aq) 60.25 NO3–(aq) 146.4 Using the value you calculated, how will the

35. Chemistry

What mass of NaCl can be dissolved in 7.50 X 10 (to the 2nd)grams of water at 25 degrees C?

36. science

The average velocity of molecules of nitrogen gas (N2) at room temperature is around 500 m/s. If you were to raise the temperature of the nitrogen gas by 50°C what is a good estimate for the speed of the molecules?

37. Physics

A rifle with a weight of 30 N fires a 3.0 g bullet with a speed of 250 m/s. (a) Find the recoil speed of the rifle. (b) If a 675 N man holds the rifle firmly against his shoulder, find the recoil speed of the man and rifle. I got .245 m/s for the first one

38. cal

A ball is thrown directly upward from ground level with an initial velocity v(0) = 96 ft=s. Assuming that the ball’s only acceleration is that due to gravity (i.e., a(t) = ��32 ft=s2), determine the maximum height reached by the ball and

39. math

a 20-ounce bag of popcorn costs \$2.80. if the unit price stays the same, how much does a 35-ounce bag of popcorn cost?

40. physics

A car tire rotates with an average angular speed of 29rad/s. In what time interval will the tire rotate 3.5 times? Answer in units of sec.

41. SCI207

Does the world have enough resources 8 or 10 billion people to live decent, secure, happy, fulfilling lives? What do those terms mean to you? Try to imagine what they mean to others in our global village

42. Physics

For two identical satellites in circular motion around the Earth, which statement is true? a. The one in the higher orbit has more kinetic energy b. The one in the lower orbit has more total energy c. The one in the lower orbit has less total energy d.

43. College Bio

Imagine you are conducting fieldwork and discover two groups of mice living on opposite sides of the river. Assuming that you will not disturb the mice, design a study to determine whether these two groups belong to the same species. If you could capture

44. geometry

Figure ABCD is a square. Side AB measures 10x – 7. Side BC measures 2x + 52. Find the value of x.

45. Physical Science

Four balls are dropped from a platform, 20 meters high. One ball is 5k, the other is 10kg, then 20kg, and 40kg. Which ball will experience the GREATEST change in kinetic energy, from platform to ground?

46. Statistics

This is the first question..... For a population that has a standard deviation of 10, figure the standard deviation of the distribution of means for samples of size- (b) 3. This is the second question....For each of the following samples that were given an

48. chemistry

what is the half reactions for C12H22O11+ 8KClO2 => 12CO2 + 11H2O + 8KCl

49. grammar

I have to write 1234.567 in English word form. How do I write this number?

50. Math

A flagpole casts a shadow 10 ft long. If a man 6 ft tall casts a shadow 4 ft long at the sme time of day, how tall is the flagpole?

51. Physics

The astronomical unit (AU, equal to the mean radius of the Earth’s orbit) is 1.4960E11 m, and a year is 3.1557E7 s. Newton’s gravitational constant is G=6.6743E-11 m^3kg^-1s^-2. Calculate the mass of the Sun in kilograms. (Recalling or looking up the

52. Comm 155

I need help finding the adverbs and adjectives in this sentence. I think I found some. Please help. As I started building up my credit, I took it slow so that I would not over-extend myself at such a young age. Not long after I got my credit going I

53. Math

Perform the following multiplication. Be sure answers are reduced to lowest terms. (Enter as an improper fraction.) 2 1/2 x 1 3/8 =

54. physics

Find the ratio of the gravitational force on the Moon due to the Earth to the gravitational force on the Moon due to the Sun. (The mass of the Earth is 5.97 1024 kg, the mass of the Moon is 7.36 1022 kg, the mass of the Sun is 1.99 1030 kg, and the average

55. Physics

objects with masses of 285 kg and a 585 kg are separated by 0.420 m. (a) Find the net gravitational force exerted by these objects on a 62.0 kg object placed midway between them.

I need to answer questions about Prince tennis. One of the questions is "Because sales of Prince Sports in tennis-related products depends heavily on growth of the tennis industry, what marketing activities might it use in the U.S to promote tennis

57. Science (Force and motion)

Explain how acceleration can be slowing down. Calculate the impact force of a 50 kg object travelling at 100km/hr. (Momentum = mass x velocity) Calculate the momentum of a tennis ball of 50 g moving at a velocity of 25m/s.

58. English**

Alexander Pope's "An Essay on Criticism. Would this be considered a analogy or personification? Those RULES of old discover'd, not devis'd, Are Nature still, but Nature Methodiz'd; Nature, like Liberty, is but restrain'd By the same Laws which first

59. College Chemistry

How many grams of Al would be deposited from an aqueous solution of Al3+ with a current of 1.430A after 5hrs of deposition.

60. Math

WHAT IS THE SMALLEST FRACTION YOU CAN WRITE USING THE DIGITS 6, 7, AND 1

61. phisic

Treating air as an ideal gas of diatomic molecules, calculate how much heat is required to raise the temperature of the air in an 7.47 m by 14.9 m by 2.87 m room from 19.9°C to 21.7°C at 101 kPa. Neglect the change in the number of moles of air in the

62. physics

A 7 x 10^-3kg bullet is fired into a 2kg wooden block initially at rest on a level surface. The bullet passes through the block and emerges with the velocity of 200m/s. The block slides 0.5m and stops. If the coefficient of friction between the block and

63. Math

There a re 30 students in a math class. Twelve belong to the computer club, and eight belong to the photography club. Three belong to both clubs. How many belong to neither?

64. psychology

please can someone help me? What are the characteristics of the following anxiety disorders? ◦ Generalized Anxiety Disorder ◦ Obsessive-Compulsive Disorder ◦ Phobic Disorder ◦ Specific Phobia Disorder

65. Chemistry

write the complete and net ionic equation for: HCl+NaOH-->H20+NaCl HNO3+NaOH-->H20+NaNO3

66. science

two balls of masses 5m and m have radii 2r and r.their center of masses are separated by 10r.they move towards each other under their gravitational force. the distance moved by the centre of smaller sphere when the sheres touch each other?

67. English I

Is this a persuasive topic for an essay: Does television today brainwash children and teens? Yes or No? How? My english teacher says he gets it but it needs to be more persuasive and specific. How do I that? Can you give me some examples? Please and thank

68. physics

a spring stretches by 3.90 cm when a 10gm mass is hung from it. if a 25 gm mass attached to this spring oscillates in simple harmonic motion, calculate the period of the oscillation

69. History

Hi! Are there any reputable sites where I can access visual sources? This is relevant for modern history (I need a cartoon on Stalin/Kulaks/collective farms) and Ancient History where I'm studying Akhenaton. Thanks

70. Math

Jake spent 3/8 of his money on a book and 1/2 of what was left on a magazine. He now has \$6.25. How much money did he start with?

71. chem

true or false?? a)If there are no changes in the oxidation state of the reactants or products of a particular reaction, that reaction is a redox reaction. false? b)A reducing agent gets oxidized as it reacts. true?

72. chemistry

A chunck of silver has a heat capacity of 42.81 J/°C. If the silver has a mass of 181 g, calculate the specific heat of silver.

73. English

Hello. I need some language help. 1)"He is ready to cooperate with authorities, especially with the public prosecutor." Is the second "with" a must or is it possible to do without it: "to cooperate with authorities, especially the public prosecutor"? 2)Is

74. Calculus

Evaluate the integral. HINT [See Example 3.] (Remember to use ln |u| where appropriate.) (4/x - 1/4x^5 + 1/2x^7)dx

75. Physics

The astronomical unit (AU, equal to the mean radius of the Earth’s orbit) is 1.4960E11 m, and a year is 3.1557E7 s. Newton’s gravitational constant is G=6.6743E-11 m^3kg^-1s^-2. Calculate the mass of the Sun in kilograms. (Recalling or looking up the

76. math

How much would you repay the bank if you borrowed \$7,900 at 4.3% annual interest for 6 years?

77. Math is this correct

There are 30 students in math class. Twelve belong to the photography club. Three belong to both clubs. How many belong to neither club? Is it 12?

78. physics

1.A cylinder rolls without slipping on a horizontal plane and then up an incline. The linear speed of the cylinder at the beginning is v. What maximal height h will the cylinder reach? 2.Helicopter of mass M holds stationary in the air fires a missile of

79. Math

Mutliply. (9t² - t- 7)(4t²+9t-1) AND Find the product. (5a+2)³

80. physics

1.Three masses, m1, m2, and m3, are lying on a plane without friction and are connected by a string. A force F is applied to the mass m1 so that the whole system accelerates along a straight line. What is the tension of the string T between the masses m1

81. health

Please help... Staying fit requires all of the following EXCEPT _______. A-a rigid fitness plan B-physical activity C-healthy habits D-healthy eating 5. True or False: To develop a personal fitness plan you should consider which exercises and sports you

82. Science

A 7-kg brick is dragged across the floor by a horizontal force of 42 N. If a frictional force of 18 N also acts on the brick, what is its acceleration?

83. math

Navigation. The current in a typical Mississippi River shipping route flows at a rate of 4 mph. In order for a barge to travel 24 mi upriver and then return in a total of 5 hr, approximately how fast must the barge be able to travel in still water?Solve by

84. life orientation

name two institution/communty organizations that surpporting or giving redress to air pollution

85. Math

I need the following definitions Please: point line intersecting lines parallel lines vertical lines horizontal lines acute angle obtuse angle right angle square rectangle trapezoid rhombus pentagon hexagon octagon triangle circle chord radius diameter

86. physics

A solid, horizontal cylinder of mass 8.0 kg and radius 1.30 m rotates with an angular speed of 5.50 rad/s about a fixed vertical axis through its center. A 0.250 kg piece of putty is dropped vertically onto the cylinder at a point 0.900 m from the center

87. Math

Jake spent 3/8 of his money on a book and 1/2 of what was left on a magazine. He now has \$6.25. How much money did he start with?

88. English

1.Either Max or Neil (know, knows) the answer to that question. 2.All of us (want, wants) to see that movie next week. 3.Her aunt and uncle (own, owns) a ranch in Wyoming. 4.(Was, Were) you standing at the bus stop when the rain started? 1.knows 2.want

89. geometry

how do you calculate the volume of a cylinder with two different sized bases? Radius of top base: 12cm, Radius of bottom base: 18cm, height: 8 units. How do you do this? i tried averaging them but it didn't give the correct answer... should be about 5730.3

90. Physics

A cannon is mounted on a railway flatcar, the muzzle elevated to 31.4° and pointed in the direction of the track. The cannon fires a 1.10-metric-ton projectile at 1.10 km/s. (a) If the flatcar and cannon together have a mass of 36.0 metric tons (not

91. algebra

ne U.S. town, the annual consumption, b, of beef (in kg per person) can be estimated by adding 20 to half the years, t, since 1975.

92. science

How does mutation contribute to variation in a species? Evolution is the theory and natural selection is the process. Explain what this might mean. How can environmental factors determine a feature in a species?

93. Math

Find the product. (5a+2)³

94. chemistry

finish the following equations and balance them, HCN+NaOH

95. probability

explain the probabilty of one event in a fair game with three possible outcome

96. math

write the place name for the 4 in the following number 3 624 786

97. College Chemistry

If the voltage of the cell is -0.1288V at 25Celsius when [Pb2+]=0.1403M and the pressure of H2=1atm, what is the pH Pb(s)+2H+(aq) Pb2+(aq) +H2(g) E0 = 0.1260V

98. chemistry

4. 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?

99. Physics

When certain a force is applied to a 2kg standard mass, its acceleration is 5m/s^2.When the same force is applied to another object its aceleration is 2m/s^2. The mas of the objects is:

100. science

What mass of water, in grams, would have to be decomposed to produce 26.3 L of molecular oxygen at STP?

102. pre-algebraa

1. Which of the following ordered pairs is a solution of 5x + 2y = -3? a. (2,-4) b. (-4,2) c. (1,-4) d. (-4,1) is the answer: C?

103. speech

Defend why you consider these to be modern styles.

104. For

What are the 3 base languages in Europe? I know there's Slavic, Romance which is Italian and French, but I can't remember the last one. Help!

105. statistics

Twenty (20) students randomly assigned to an experimental group are studying for a test while listening to classical music. Thirty (30) students randomly assigned to a Control group are studying for the same test in complete silence. Both groups take the

106. social studies

i need an summary on The Home Front

107. Brief Calculus

Evaluate the integral. HINT [See Example 2 and 4.] (Remember to use ln |u| where appropriate.) (1/v7 + 5/v) dv

108. Chemestry

The covalent compounds ethyl alcohol and dimethyl ether have the formula C2H6O. However, the alcohol melts at -117.3 degrees C and boils at 78.5 degrees C the ether melts at -138.5 degrees C and boils at -23.7 degrees C. How could differences in forces

109. MATH

peter bought a computer that cost 1,500. The computer is on sale for 15% off. Peter paid 7% sales tax on the sale price of the computer. How much did peter pay? My answer would be 1,604.25 can you explain how to do the problem if it is wrong

110. math

Given the quadratic function f(x) = 16x^2 – 64x + 64, find a value of x such that f(x) = 16.

111. Econ/statistics

The monthly earnings of teachers is normally distributed with a mean of \$3,000 and the standard deviation of \$250. We select a sample of 87 teachers. The sampling distribution of the sample mean has an expected value and standard deviation of: a.) 3,000

112. Math 120

A recent study of 750 Internet userd in Europe found that 35% of Internet users were women. What is the 95% confidence interval of the true proportion of women in Europe who use the Internet? A)0.321

113. Geography

What is the time and day at a certain place X (Lat 25 deg N,Long 33 deg W) when at is 2.30 AM on Thurs Day at a place Y (Lat 25 deg S,Long 27 deg E) ?

114. Oncology Report

Ok, we're are supposed to do a one page annual report on oncology and I'm having trouble understanding exactly what I'm supposed to do. Our teacher gave us a sheet saying "You are asked by the CEO of a hospital to contribute to the annual report. She wants

116. algbera

Multiply -x – 2 by -x2 + 4x – 2

117. Chemistry

A ship carrying ice over a lake breaks and spills its cargo.If 3650.0 g of ice at 0.00 celcius are released into the 15456200 g of water in the lake at 17.0 celcius, what will the final temperature be? (heat of fusion=79.0 cal) and i got the answer of

118. Money and Banking

Price of stock is 50.00 at the beginning of a year and 53.00 at the end of the year and it pays a dividend of 2.00 during the year calculate the stock's current yield,capital-gains yield,and the real return show work.

119. Computers

Why is the Web an important medium to publish information? Describe the ways the Web is different from other publishing media.

120. math

Amy places a set of number cards 1 through 30 in a bag. she draws out a card what is the probability that the number will have the digit 1 on it?

121. math

A survey of Chaicago sports fans asked them 3 questions about which they prefer. Each fan must give exactly 1 answer to each question. Given a choice between the Cubs and White SOx, 40% chose cubs. Between the Bulls and Blackhawks, 57% chose bulls. between

why does the equation x^2=-9 has no real solution? This I can't figure out. why does the equation x^2 = 9 has two solutions? Is it because it satisfied by both 3 and -3 so it has two solutions.

123. math

multiply (-x-2)by (-x2 + 4x – 2)

124. IPC

i have no idea how to do this at all please explain... The specific heat capacity of copper is 0.09 cal/g°C. How much energy is needed to flow into a 10-gram sample to change its temperature from 20°C to 21°C?

125. math

what does polygon mean

126. science

if a person weighs 120kg on earth, how much would they weigh in space

127. English

1. I have to pay a library fine; I must have (forgot) to return a book on time. 2. Unfortunately, she had already (throw) the map away. 3. My uncle Jack has(drive) a taxicab for over thirty year. 4. Noah had already (write) a letter to his grandfather.

128. geometry

What is the diameter of the following circle: (x + 4)2 + (y – 9)2 = 18

129. IPC

okayy sooo this matching thing is wierd.. i don't understand it.. Zeroth First Second -Heat can change energy from one form to another, but the amount of energy in the universe is constant. -Two objects in thermal equilibruim will have no net heat flow

130. math

Write a mixed numeral for the answer. 17 3/5 - 14 23/27

131. Economics

Q = 39,000 – 500P AVC = 30 + 0.005Q Q is quantity demanded and produced, and P is price of the product. Total fixed cost is \$50,000. Assume these functions are based on monthly demand and production. A. What are the inverse demand and the MR revenue

132. Chemistry - Help!!!

Which of the following criteria indicate that a reaction is SPONTANEOUS? Check all that apply. a) The change in free energy is positive. b) The entropy of the universe decreases. c) The change in free energy is negative. d) The entropy of the system

2x-5y=14 3x+2y=40 what is the solve of xy ?

2x-5y=14 3x+2y=40 what is the solve of xy ?

135. English

Can you briefly chech these few sentences, please? Thank you very much. They are urgent. 1) Dorian's wish for eternal beauty and youth could be connected to Goethe's Faust. 2) The portrait returns beautiful as original (or as it originally was?) 3) I

136. Life orientation

How to address the problem of floods in our country?

137. Finance

subject is purchasing a home for \$45,00.00 with \$5,000.00 down payment @ 11% interest. Will this be covered in 10 years and how much payment per month?

138. math

Combine like terms. 7 3/4x - 5 1/20x

139. american government

For the first eleven years of its existence, the United States was a _____.

140. chem

What is being oxidized in each of the following reactions? (a) Sr(s) + F2(g) SrF2(s) F2 SrF2 Sr .(b) H2(g) + I2(g) 2 HI(g) H2 HI I2 .(c) 2 Li(s) + Pb2+(aq) 2 Li+(aq) + Pb(s) Pb2+ Li+ Pb Li thanks:) can you give an explanation. I know a is Sr but I don't

141. English

Hello. Will you please help me with the word order: 1)US forces have killed Osama bin Laden, who with his wives and sons has been living in a luxury compound in Pakistan for many years. (Is "who with" natural here; does "who together with" or "who along

142. math

If a stone is tossed from the top of a 250 meter building, the height of the stone as a function of time is given by h(t) = -9.8t2 – 10t + 250, where t is in seconds, and height is in meters. After how many seconds will the stone hit the ground? Round to

143. apple

Do you recognize the company or organization represented by the logo? If you do, where were you first introduced to this logo? Over time, has the graphic changed but still remained recognizable and associated in your mind with the company or organization?

144. ECONOMICS

Q = 39,000 – 500P AVC = 30 + 0.005Q Q is quantity demanded and produced, and P is price of the product. Total fixed cost is \$50,000. Assume these functions are based on monthly demand and production. A. What are the inverse demand and the MR revenue

145. ECONOMICS

Two price setting firms have the same price and marginal revenue functions but face different cost functions. These functions are provided below. P = 165 - 0.025Q MR = 165 - 0.05Q Firm 1: TC = 4,000 + 15Q Firm 2: TC = 3,000 + 22Q a. Assuming that both

146. Math

I really need a math dictionary... I need the following definitions Please: point line intersecting lines parallel lines vertical lines horizontal lines acute angle obtuse angle right angle square rectangle trapezoid rhombus pentagon hexagon octagon

147. Chemistry!!!

Calculate the density of a certain gas if its pressure is 0.725 atm, its molar mass is 48.22 g/mol, and the temperature of the has is 24.0 degrees Celsius

148. Computer

Why do you think the information in the title bar of a document is important?

149. Physics

What is the importance of the Michelson-Morley experiment?

150. geometry

If segment AB is a diameter, AB =10, and measure angle ABC =45, how far is segment BC from the center of circle O?

151. Pictures Of HBC

Since I am doing an Ad on the HBC. Could I get links to pictures. I don't know what to draw, anything easy please. Like a beaver, a boat, could you please give me links to items the HBC sold?

152. Math

x + 2/3x ______ = 30 2

153. math

how do i solve 4x divided by 3 +21 = 17

154. Chemistry

I don't get this problem... 6.0 N H2SO4 = ________ M How can you solve for Molarity without mL? Thanks, much appreciated!

155. Social studies

Why did people long ago form communities

156. Biology

What ethical issues might arise when a drug company funds trials of a new drug it has developed to treat a genetic disorder?

157. Geometry

The equation of a circle is x^2 + 6x + y^2 - 2y = 15. What are the center and radius of the circle? Please show work.

158. science

Evolution is the theory and natural selection is the process. Explain what this might mean. How can environmental factors determine a feature in a species?

159. Science (Asap)

What is the effect of a chemical change on the mass of matter?

160. math

Rewrite with positive exponents. Assume that even roots are of nonnegative quantities and that all denominators are nonzero.(6xy/y)^-3

161. math

multiply -x^2by-x^2 + 4x – 2

162. math

Rewrite with positive exponents. Assume that even roots are of nonnegative quantities and that all denominators are nonzero.(6xy/y)^-3

163. english

Because she practiced her presentation so diligently, Jamie was not the least bit nervous when she stepped onto the stage. (Points : 1) Because she had practiced her presentation so diligently, Jamie Because she had practiced her presentation, so diligent,

164. Calc

How do you know what shape the graph in the xy-plane represented by x=3sin(t) and y=2cos(t) is?

165. English

1.The brilliant blue waters (make, makes) the area popular. 2.Either Sydney, Australia, or Budapest, Hungary (were, was) settled by the British. 3.In Bahrain (is, are) located important oil reserves. 4.(More, Most) of the world's population (is, are) in

166. Math

Find the product. (5a+2)³

10-3n translate into words

168. pre- algebra

Method collected twice as much money as Lucy for a walkathon. Together they collected \$120. Hoe much money did each person collect?

169. Science

The drawing bellow(click go to address img291.imageshack.us/i/sc017942e5.jpg/ to see picture of image) shows two students performing an experiment. Make a list of the things the students are doing incorrectly

170. geometry

find the area of an equilateral triangle with sides measuring 6 meters.

171. algebra

5/x-6x=4 find a quadratic equation and find the roots?

172. math

Write a mixed numeral for the answer. -1 7/8 divided by 1 5/9 =

173. English

Hello. Please help me with a few lexical questions. 1)Is it possible to use "spot" in the following context: "the scandal spotted his political reputation"? 2) Is it possible to say "Hosni Mubarak was a)discharged b)dismissed c) dismissed from power"

174. Math

A locker combination has three nonzero digits, and digits cannot be repeated. The first two digits are 1 and 2. What is the probability that the third digit is 3?

175. reimbursement methodologies

you're reviewing reimbursement for medicare surgical craniotomy case. The case falls into DRG 1, which has a relative weight of 3.0970 and a geometric mean length of stay of 6.3. The hospital's current standard reimbusement rate is \$1500. calculate the DRG

176. Science

What happens to the current in a closed circuit if the potential difference is increased and the resistance remains consistent?

177. math

At a local community college, it costs \$ 650 to enroll in a morning section of an algebra course. Suppose that the variable n stands for the number of students who enroll. Then 650n stands for this course. How much is collected if 45 students enroll? 61

178. algebra 2

Given an angle pheta in standard position, if P(ã3/2, -1/2) lies on the terminal side and on the unit circle, find sin pheta and cos pheta.

179. math

A=29 degrees, a= 5, b=13, How many solutions are there for triangle ABC and whats the solution(s)

180. statistics

The sample mean is 12 for a sample of 26. The sample deviation is 3. Use the .02 level of significance The following information is available. H0:  ≤ 10 H1:  > 10

181. math

write as mixed numbers 3.2= 5.4=

182. algebra

I need help understanding how to do these problems. Thanks! 1) Find the value(s) that would be left out of the range of f. If there is more than one value separate them by commas. Leave fractional answers in fraction form. If there are no values left out

183. chemistry

write out the reactions that convert the chromate ion into chromium peroxide.

184. conseptual physics

if you hold one end of a metal nail against a piece of ice, the end in your hand soon becomes cold. does cold flow from the ice to your and? why?

185. math

what is the product of the expression below? (2x-5)(2x-3)

186. English

I need to check these sentences, especially the use of sentence connectors. Can you also suggest a site to me where I can get extra exercises on how to use them in a paragraph? Thank you 1)The soldiers are presented as old and tired. The poet wonders if

187. history...sort of

i am doing a research project on media scares or media rumors that have frigntened people throughout history and how society has reacted to them. I already have the y2k scare and the war of the worlds brodcast scare. I would like a couple other scares to

188. Pre-Algebraa

1. Find an equation in slope-intercept form for the line passing through each pair of points: (-4,4), (-5,-3) a. y = 7x - 32 b. y = 7x + 32 c. y = -7x + 32 d. x = 7y + 32 is the answer a?

189. physics

A 3kg book is lifted to a height of 50cm above the ground (a)by how much has the book's gravitational potential energy increased?

190. hialeah miami lakes

given triangle PQR with vertices P(0,-8), Q(4,-9) and R(-2,-3), find the length of the midsegment connecting the midpoint of PQ to the midpoint of PR.

191. trig

solve for exact value for x between 0 and 2 pie 3sin2(x)-cos2=2?

192. math

Subtract. (4a3 – 7a2) – (8a3 + 1a2)

193. Integrated Physics and Chemistry

Energy that is dissipated during heat flow cannot usually be used to produce work. True False

Okay. I had a sub today, and she said that I have to make an advertisement on the HBC to attract individuals. Some examples she gave to me: -Marvellous goods! -We Want you! -Jobs available for men! Some things I came up: -All types of fur like beaver and

195. life orietation

5 ways in which the human or enviromental problem impacts on the community

196. Math

I invested \$45,6000 at 18% to be compounded semi-annually. What will be the value of my investment in four years?

197. Chemistry

HCl (g) Hbr(g) HF(g) Which of these gases has the fastest average speed? The highest average kinetic energy? How do I determine this?

198. algebra 1

find the excluded value x+5 over 3x-2

199. algebra

an advertising company made 15 million in 2002 and 22 million in 2003. in a bar graph of this data, the bar for 2002 is 3 inches high. How high should the bar for 2003 be to represent the data proportionally?

200. math

given a length of wire to construct a geometric figure with it, what fugure encloses the greatest area

201. Calc

To what limit does the sequence Sn = (3+n) /3^n converge as n approaches infinity?

202. Grammar

I need the present tense form of the verb choose in this sentence. Fred chooses a piece of wood. Is it chooses or chose? Also in this sentence, Jim lies his jacket on the bench. Is lies or lays correct?

203. math

find the axis of symmetry f(x)=-2x2-12x+8find the axis of symmetry f(x)=-2x2-12x+8

204. Statstics

Cities A, B, C and D are equidistant. That is, B is d miles from A, C is d miles from B, and D is d miles from C. Suppose you travel 55 mph from A to B, 40 mph from B to C, and 50 Mph from C to D. What single, constant speed could you have traveled from A

205. Math

Find the equation of a hyperbola of the form x squared / M - y squared / N = 1 the transverse axis is 12 and the foci from the center is 16 is the answer x squared / 36 - y squared / 220 = 1

206. Statistics

A certian company enjoyed 3.5% profits in year 1 over its revenue in Year 0. In Year 2, it enjoyed 5.75% profits over Year 1. In Year 3, it posted 1.25% profits over Year 2. What single, constant profit over this period of years would have produced the

207. english

Two many cooks spoil the broth. (Points : 1) Two many cook To many cooks Too many cooks Two many cooks

208. FRENCH

Sra, thanks so much for the help yesterday with my French. Here is the work, and I got my teacher to check it over, and she corrected some areas, so I thought to let you know. 1. Nous sommes allés à Vancouver où nous avons rencontré nos cousins. 2. À

209. MATH

karen earned 12% this year 78,500 investment earn about 1,00 this year i need an equation you have to estimate is this correct 80,00 x 0.12 = 9,600

210. compose

Who are some famous pianists of the 21st century?

211. managment

“Egalitarian companies are more innovative.What do you think?

212. math

-5/3x+2/3=-11

213. aglbera

Rewrite with positive exponents. Assume that even roots are of nonnegative quantities and that all denominators are nonzero.(6xy/y)^-3

214. science (force and motion)

explain how accceleration can be slowing down. Calculate the impact force of a 50 kg object travelling at 100km/hr? -> i was wondering if you can answer directly and not through hyperlinks... thank you

215. lomes

it is a 2 digit number. its digits add up to 13. it has more tens than ones

216. Math

Hai take 12 minutes to walk to school. He wants to get there.15 mins early to meet with his lab partner. What time shod he leave his house is school starts at 8:10 am?

I need help understanding how to do these problems. Thanks! 1) Find the value(s) that would be left out of the range of f. If there is more than one value separate them by commas. Leave fractional answers in fraction form. If there are no values left out

218. science

How does your body keep from being crushed from air pressure?

219. Math

Multiply. (9t²t-7)(4t²+9t-1)

220. Algebra

x_< 2 y_>-2x+4

221. Chemistry

Determine the number of moles in 56 g of N2

222. Science

Explain how gravitational force keeps planets revolving around the sun.

223. statistics

If input is 15, 24, 30 and output is 5, N, 10 - what is "N"?

224. gr 10 french

How would you start off the answers for these questions in french? 1)Est-ce qu'il y de la competition entre cette compagnie et un autre?qui? 2)Est-ce qu'il y des porte-paroles ou des temoinages pour ce produit?qui? 3)Quelle technique de persuasion est-ce

226. science

how is it possible to extract tungsten from woframite?

227. science (Genetics and Evolution)

What contains DNA? Where is DNA found? What is the difference between phenotype and genotype?

What are some competitors of these companies? 1)Simple Green detergents 2)Motomaster 3)Nascar 4)Canadian Tire Jumpstart

229. math

log(x+8)-log(2)=log(2x+2) solution set

230. math

round the following number to the nearest ten: 53

231. anthropology

What ethnicity are known for there spherical eye orbits?

232. algebra

What is the Pythagorean theorem? How is it used?

233. spelling

how can you sort the words soup, double, cougars, and enough?

my question is in geometry what does 4/3 look like?

235. chemistry

why is the pH very acidic when adding water,naoh, and benzoic acid?

236. math

two positive integers I larger value 32 j smaller 20 divide i by j which equal R if r not 0 then reset the value of j to the value of r when r equal 0 what the value of j?

237. chemistry

a)what is the name and molecular formula of the reagent responsible for the formation of the nickel complex ions? b)What is the color of this complexation?

238. FRENCH

Sra here some of the other sentences: 1. Nous sommes allés à boum, et nous avons montré des bals. 2. Je suis allé à la maison de mon ami et j’ai eu Soirée pyjama. 3. Je suis rentré à la maison de mon cousin et j’ai joué des jeux. 4. Nous

239. math

how would you write 2/3 as a decimal .66?

The two accounts used to adjust the uncollectible accounts are. A) Uncollectible Accounts Expense and Allowance for Uncollectible Accounts. B) Accounts Receivable and Uncollectible Accounts Expense. C)Accounts Receivable and Allowance for Uncollectible

241. algebra

The area a of a triangle with base b and height h is given by A=1/2bh. Find the area when b=30m (meters) and h =30m What is the area?

242. Physical Science

If an atom were to lose a neutron the atom's ________ would be affected.

243. Chemistry II

For the cell Fe(s)©¦Fe2+(aq)¨UO2(g)©¦H+(aq), H2O(l)©¦Pt(s) Indicate a) standard cell potential; b) overall cell reaction c) number of electrons transferred

244. math

How do you convert feet to mph?

245. Math And Physics HELP

A particle P of mass m=1 moves on the x-axis under the force field F=36/(x^3) - 9/(x^2) (x>0). Show that there is a single equilibrium position for P and that it is stable. Find the period of small oscillations about this point.

246. Finance- Real Estate....really need help!!!

A developer is interested in a parcel of land for a small mixed use development. Similar developments are worth \$15 million and require the following sequential investments to complete: Phase Description 1 Purch. land, permitting, utilities 2 Build retail

247. physics

how would you make a graph testing a ping pong ball and a tennis ball going down an incline and timing it

248. FINANCE

CORRECTION TO AMOUNT WITH PRIOR QUESTION:subject is purchasing a home for \$45,000.00 with \$5,000.00 down payment @ 11% interest. Will this be covered in 10 years and how much payment per month?

249. physical science

list two safety procedures to create a supersaturated solution

250. Statistics

1. In thinking about doing statistical analysis, the sample mean should be interpreted as: A.)a constant value that is equal to the population mean. B.) a constant value that is approximately equal to the population mean. C.) a random variable that is

251. Economics 210

Information given is sample mean of 12 for a sample of 26. Sample deviation is 3. Using a .02 level of significance. H0 u< or equal to 10 and H1 u> 10 a. Is this a one or two tailed test? b. what is the decision rule? c. what is the value of the test

252. Chemistry

A student places 5.77 grams of wex (a mythical substance often burned for light on other planets) in a test tube and then melts it. When the wex starts to freeze, the test tube (with the wex) is put into 237.6 g of water at 34.7oC. If the final temperature

253. math

Solve by factoring: 9t2 + 3t= 0 p2 + p + 4 = 0

254. algebra

Graph inequality. y is < or equal to -x+2

255. chemistry

I need help with this problem: if you want to reduce the strength of 100 mL of 10 N NaOH to 3N, how much water would you need to add? Thanks in advance.

256. math

How do you write the least common multiple that clears an equation of fractions?

257. Chemistry

Entropy both increases and decreases when you build a jigsaw puzzle. How is this possible?

258. MATH AND PHYSICS HELP HELP HELP HELP HELP

A particle P of mass m=1 moves on the x-axis under the force field F=36/(x^3) - 9/(x^2) (x>0). Show that there is a single equilibrium position for P and that it is stable. Find the period of small oscillations about this point.

259. Computers

What will happen if documents don't have a title bar?

260. math

input/x,-2,0,2 rule/-x+3 output/y

261. technical math/precal

18/3square roots of 6-7square roots of 2

262. Economic

suppose now the inputs of mangoes are taxed. draw the graph to show the economic effects if demand is elastic

263. Grammar

Present Tense Verb questions, Which is correct in this sentence? Joe chooses a piece of wood. Is it chooses or chose? Also, Joe lies his jacket on the bench. Is it lays or lies?

264. geometry

Indicate in standard form the equation of the line passing through the given points. A(4, 1), B(5, 2) please help me

265. calculus

Please help. Applying the chain rule, how do I find the derivative of f(x)=In(e^x-e^-x) (x>0) and then using this answer use the quotient rule to find the second derivative. I cannot do this so any answer greatly appreciated.

266. Calc

Find f(x) if f(1) = −1 and the tangent line at (x, f(x)) has slope7ex + 6. F(x)=

267. life orientation

in 15 lines critically discuss 5 ways in which the substance abuse impacts on the community. Provide relevant sources to support your claims.

268. CHEMISTRY

complete and balance the reaction. HCl + Ba(HO)2 --- the 2 is suppose to be a sub 2 but can get it to do so on this computer and the --- is an arrow. I believe it is BaClO + H2O is this correct?

269. Grammar Verbs

Is this the correct present tense verb in this sentence? Then Joe starts the power saw. I think it is starts not started.

270. science (force and motion)

explain how accceleration can be slowing down. Calculate the impact force of a 50 kg object travelling at 100km/hr? -> i was wondering if you can answer directly and not through hyperlinks... thank you

271. MATH

BOB BOUGHT 12 GALLONS OF GAS FOR \$33.48. WHAT IS THE UNITED PRICE PER GALLON.

272. Math 120

Which of the followinf could not be the value of a correlation coefficient? A) -0.683 B) 0.197 C) 1.000 D) -1.369

273. Physics

At what speed must one frame of reference be moving relative to another for the two frames to disagree about lengths by 1%? Express your result as a fraction of the speed of light. At what speed must one frame of reference be moving relative to another for

274. History

What was the time period for the columbian exchange>