# Questions Asked onSeptember 24, 2011

1. ## word problem(algebra)

at the market, a pear cost b cents&an apple cost 7 cents less than a pear.Mrs Ravi bought 4 pears&an apple.Find the total amount Mrs Ravi paid in terms of b. Help me!

2. ## Math

farmer has 10 trees see if you can plant them so there are 5 rows of trees with 4 trees in each row

3. ## Math !!!!!

a function f(x)has doamin {xeR/x>-4} and range {yeR/y

Write the balanced, complete, and net ionic equations for each precipitation reaction. 1) AgNO_3 + CoCl_2 ---> BE: AgNO_3(aq) + CoCl_2(aq) ---> AgCl_2 (aq) + Co(NO_3)(aq) CIE: Since the balanced equation is all (aq) there is no reaction so no complete or

5. ## CHEM

SAPPHIRE AND DIAMOND RING ,STAMPED 14K S&S WHAT DOES THIS MEAN?

6. ## Physics

A stone is dropped from a high altitude and 3 s later another stone is projected downward with a speed of 150 ft/s. When and where will the second stone overtake the first? Ans. (a) 5.70 s (b) 520 ft

7. ## word problem(algebra)

Govin is w years old.His mother is 4 times his age.His father is 3 years older than his mother. (a) How old is Govin's father in terms of w? (b) If w=9,how old is Govin's father?

8. ## chemestry

What is the molecular formula for the folowwing compound? Empirical Formula: C3H6O2 (M=74.08 g/mol)

9. ## SAT algebra

(x-8)(x-k) = x^2-5kx+m In the equation above, k and m are constants. If the equation is true for all values of x, what is the value of m?

10. ## physics

a plane stops from 250 mph in 25 seconds. Calculate the planes acceleration

11. ## science

A 4.3 "kilo" bag of sugar is on a counter. How much work is required to put the bag on a shelf a distance of 0.43 m above the counter?

12. ## statistics

12.27 A study has been carried out to compare the United Way contributions made by clerical workers from three local corporations. A sample of clerical workers has been randomly selected from each firm, and the dollar amounts of their contributions are as

13. ## AP Chemistry

What volume of each of the following bases will react completely with 21.00 mL of 0.500 M HCl? (a) 0.100 M NaOH (b) 0.0500 M Ba(OH)2 (c) 0.250 M KOH

14. ## Physics

Two spheres are cut from a certain uniform rock.One has radius 4.50 cm.The mass of the other is five times greater. Find its radius.

what is 2 times pie times 2.5to the second power + 2 times pie times 2.5 times 5.5? Please help! Thank you!

16. ## geometry

Joey plots a point P on the line AB, as shown. Which statement is true? Answer A:There are only two points on the line AB because a postulate states that a line is drawn through two points. B:There is only one point on the line AB because a theorem states

17. ## United States Government

Capitalism is a system that may be seen as the economic equivalent of what political ideology? a. Republicanism b. Anarchism c. Classical liberalism d. Communism e. Socialism Is it Socialism? But all of these listed opposed against capitalism.

18. ## AP Chemistry

Write the balanced molecular, complete ionic, and net ionic equations for the reactions that occur when the following are mixed. (Type your answer using the format [NH4]+ for NH4+ and [Ni(CN)4]2- for Ni(CN)42-. Use the lowest possible coefficients.) (a)

19. ## chemistry

WHAT IS HS2SO4

20. ## Math/Finance

Due to a recession, expected inflation this year is only 2%. However, the inflation rate in Year 2 and thereafter is expected to be constant at some level above 2%. Assume that expectations theory holds and the real risk-free rate is r* = 2.25%. If the

21. ## psychology

reaction paper about the door to door movie? true story by bill porter

22. ## psychology

what can you say about bill porter?

23. ## Statistics

Jan Gentry is the owner of a small company that pro¬duces electric scissors used to cut fabric. The annual demand is for 9,000 scissors and Jan produces the scissors in batches. On average, Jan can produce 185 scissors per day. Demand for scissors has

asked by Running Out of Time dee
24. ## CHEMISTRY

A sample of C3H8 has 2.64 x 10^24 atoms. How many carbon atoms does the sample contain? What is the total mass of the sample?

25. ## geometry

The figure shows some of the steps Jane took to draw a line segment parallel to line segment XY at R. Jane plans to perform these steps next. Step 1. Set the compass at point S and adjust its width to point T Step 2. Fix the compass at point L. Step 3.

26. ## Chemistry

length in cm of one side of perfect cube of gold with a density of 18g/cc and mass of 25g? How would i set up this equation? I don't know what length formula I would use, because I know that i am not supposed to just divide the density by the mass, because

27. ## Earth/Space Science

What effect, if any, would you expect a massive forest fire to have on the amount of carbon dioxide in the atmosphere? Explain your answer, please?

28. ## physics

What is the kinetic energy of a 15 kg dog that is running at a speed of 8.9 m/s (about 20 mi/h)?

29. ## Inventory

Jan Gentry is the owner of a small company that pro¬duces electric scissors used to cut fabric. The annual demand is for 9,000 scissors and Jan produces the scissors in batches. On average, Jan can produce 185 scissors per day. Demand for scissors has

30. ## Chemistry

A sample of C3H8 has 2.64 x 10^24 atoms. How many carbon atoms does the sample contain? What is the total mass of the sample? I don't even know where to start i mean it seems like a really simple question but the prof hasn't been through this topic. Im

31. ## AP Chemistry

What volume of each of the following acids will react completely with 25.50 mL of 0.700 M NaOH? (a) 0.100 M HCl (b) 0.150 M HNO3 (c) 0.200 M HC2H3O2

32. ## AP Chemistry

Write the balanced molecular, complete ionic, and net ionic equations for each of the following acid-base reactions. (Type your answer using the format [NH4]+ for NH4+ and [Ni(CN)4]2- for Ni(CN)42-. Use the lowest possible coefficients.) (a) HClO4(aq) +

33. ## art history

Even though the art in the Renaissance and Baroque periods was not totally religiously oriented as had been the case before 1400, there was still much artistic effort put forth toward the creation of beautiful religious pieces. Explain why this influence

34. ## AP Chemistry

What mass of Na2CrO4 is required to precipitate all the silver ions from 96.0 mL of a 0.650 M solution of AgNO3?

35. ## Pre-Calc

Ana Colon asks her broker to divide her 401K investment of \$2000 among the International Fund, the Fixed Assets Fund, and the company stock. She decides that her investment in the International Fund should be twice her investment in company stock. During

36. ## statistics

Six students from a statistic class reported the number of hours of television they watched per week. Here are their data: 8,10,5,14,3,6. What is the median number of hours of television watched per week for this sample of 6 students

37. ## Chemistry

Write a molecular form of the equation for the reation CaCl2*2H2O/K2C2O4*H2O

38. ## physics

The electric potential in a certain region is V = a x2 + b x + c, where a = 15 V/m2, b = −13 V/m, and c = 67 V. 1)Determine the electric field at x = 4 m. 2)Determine the position where the electric field is zero.

39. ## Chemistry

10cm3 of hydrogen are burned in oxygen to form water. What volume of oxygen is need to burn hydrogen completely?

40. ## chemestry

calculate the moles of compound in 0.540 grams of ammonium Bromide

41. ## Chemistry

The speed of light is = 3x10^8 m/sec. How long will it take to reach Pluto, 278,000,000,000 km away? I don't understand how to set this problem?

42. ## Chemistry

The speed of light is = 3x10^8 m/sec. How long will it take to reach Pluto, 278,000,000,000 km away? I don't understand how to set this problem?

43. ## statistics

You have available five different investment strategies and their respective payoffs for various states-of-nature as shown in the chart below. Which investment would you make under the different decision criteria? States of Nature Sever Decline Moderate

asked by In Desperate Need Deena
44. ## sciences

a radio wave travels 186,000 miles per second. how many kilometers will the wave travel in one microsecond?

45. ## chemistry

Boiling point

46. ## history

Im writting an essay on the reformation and the renaissance can somebody proofread my essay

47. ## Calculus

Find the positive integers k for which lim ->0 sin(sin(x))/x^k exists, and then find the value the limit. (hint:consider first k=0, then k=1. Find the limit in these simple cases. Next take k=2 and finally consder k>2 and find the limit in these cases as

48. ## Calculus

Water is leaking out of an inverted conical tank at a rate of 10,000 cm^3/min at the same time that water is being pumped into the tank at a constant rate. The tank has height 6m and the diameter at the top is 4m. If the water level is rising at a rate of

49. ## Science/math

Emily takes a trip, driving with a constant velocity of 79.5 km/h to the north except for a 22 min rest stop. If Emily's average velocity is 68.8 km/h to the north, how long does the trip take?

50. ## science/math

A car travels up a hill at a constant speed of 45 km/h and returns down the hill at a constant speed of 70 km/h. Calculate the average speed for the round trip.

51. ## calculus

Let f be defined as follows: h(x)= -x-3 for x greater than or equal to 1 ax+b for -2

52. ## Social Studies 9

Explain how television and other media can contribute to peoples hysteria. PLEASE HELP ME . ANOTHER question i don't understand is : Find out more about the conflict in the northern ireland today. write one account of the situation from an irish catholic

What feature of a cylinder uses the given units? a. centimeter b. square centimeter c. cubic centimeter Please help! Thank you!

54. ## Government US

According to Charles Beard, which of these was NOT an economic group that benefited from specific constitutional provisions? a. Those holding public b. slave owners c. Western land speculators d. Farmers and ranchers e. Merchants and manufacturers I would

55. ## calculus

Gah. Struggling over this for the past 20 minutes... Find the slope of the line tangent to the curve y=1/x at the point (2,0.5).

56. ## physics

How would you draw 4 cm 45 degrees north of east plus 4 cm west?

57. ## math

a bullet travels 1000 m in 1.17 seconds. what is the speed of the bullet

58. ## nursing

How are confirmatory analyses critiqued in a study?

59. ## Calculus

Determine the limit lim x->0 1-cos^2(3x)/x^2

60. ## misplaced nodifier

we finally found the fire extinguisher we had been hunting for behind a pile of logs

61. ## Pre-Calc

Can anyone direct me to learn more about polar coordinates. I'm in online college course and really am confused. In high school, I never heard of polar coordinates. Like they say is the following the graph of point (3,15) and show it on polar grid-I don't

62. ## Math

Can ayou nswer this? Good luck!!!!!!!!!. Horses are \$10, pigs are \$3 and rabbits are \$0.50. A farmer buys 100 animals for \$100, How many of (each ) animal did he buy? Hint: there are 2 answers No less than 1 animal each, and no more than 6 horses.Thank You

63. ## statistics

What is the probability a student answer at least 4 out of five questions correctly on a quiz? n=15, x>=4, p=.20, q=.80

64. ## Government US

Totalitarianism differs from authoritarianism in allowing no a. voice in government b. veto over legislation c. political parties d. personal freedom e. elections I cant quite figure this out and even if I can I am very unsure. I would say political

65. ## US History

The English colonies in North America were united by all but which of the following? Answer a uniform language based on the London English dialect traditional English inheritance laws an uncomplicated legal system with few professional lawyers military

66. ## Algebra

find the intercepts and graph the equation by plotting points. Y=2-2x^2

67. ## misplaced nodifier

The mystery has been solved after ten years of a missing portrait.

68. ## United States Government

Which of the following would NOT be advocated by modern conservatism? a. Free markets b. Small governments c. Laissez-faire economics d. Welfare programs e. Reliance on tradition I would say Reliance on tradition. what say?

69. ## math probability

A man is camping. He has packed 8 black socks, 8 blue socks, 8 white socks, and 8 gray socks. It is still dark when he gets dressed. How many socks would he have to pull out of his bag to BE SURE that he has a matching pair?

x+2y=3 5x+4y=8 I isolated x+2y=3 to make: x=3-2y then i began to sub in equation one with equation two: 5x+4y(3-2y)=8 5x+12-8y=8 after that i began to try to solve the equation but my answers were not correct. any help would be greatly appreciated!

71. ## Algebra

determine whether the ordered pair (1,10) is on the graph of the following equation Y=√x + 9

72. ## math

I'm having trouble solving this problem: definite integral (2-t)(sqrt(t)), 0..2

73. ## physics

A linear charge of nonuniform density (x) = 5.2 x C/m, is distributed along the x-axis from 4.9 m to 6 m. Determine the electric potential (relative to zero at infinity) of the point y = 8.6 m on the positive y-axis. Answer in units of V

74. ## physics

A charge of 10.104 nC is uniformly distributed along the x-axis from −1 m to 1 m. What is the electric potential (relative to zero at infinity) of the point at 5 m on the x-axis?

75. ## Math

If f(x) = (x-4) (x+3) , determine the x-intercept of each function a)y=f(x) b) y=-2f(x) c) y=(-(x+1)) thanks for the help !!!!!!

Early Earth was constantly being bombarded by meteorites, comets, and asteroids. Was early Earth an open system or a closed system? Explain your answer.

77. ## geometry

If XC = CY then C is the midpoint of XY

78. ## statistics

Suppose you are commparing frequency date for two groups,25 managers and 150 blue collar workers.Why would a relative frequency distribution be better than a frequency distribution?

79. ## physics

A car is parked on a cliff overlooking the ocean on an incline that makes an angle of 36 below the horizontal. The negligent driver leaves the car in neutral, and the emergency brakes are defective. The car rolls from rest down the incline with a constant

80. ## physics

Initially (at time t = 0) a particle is moving vertically at 5.8 m/s and horizontally at 0 m/s. Its horizontal acceleration is 2.1 m/s2. At what time will the particle be traveling at 54 with respect to the horizontal? The acceleration due to gravity is

81. ## physics

Particle 1 is moving on the x-axis with an acceleration of 5.55 m/s2 in the positive x-direction. Particle 2 is moving on the y-axis with an acceleration of 7.45 m/s2 in the negative y-direction. Both particles were at rest at the origin at t = 0 s. Find

82. ## physics

A place kicker must kick a football from a point 36 m (about 39 yd) from the goal, and the ball must clear the crossbar, which is 3.05 m high. When kicked, the ball leaves the ground with a speed of 24 m/s at an angle of 50 to the horizontal. The

Explain the role of energy in the carbon cycle.

84. ## physics

Three horizontal forces (the only horizontal one) act on a box sitting on a floor. One force (F1) acts due east and has a magnitude of 150 lb. A second force (F2) has an easterly component at 30.0 lb and a southerly component at 40.0 lb. The box remains at

85. ## physics

A ball is dropped from rest off a 31 m building. How long does it take to hit the ground at the bottom of the building?

86. ## htt 200

Why do you believe you would be better able to relate to guests in an economy hotel better than in a luxury property?

87. ## HTT 200

Do you we treat our guests and customers differently depending on the segment in which we are working?

88. ## Pre-Calc

Can someone explain how to graph polar coordinates on a TI-84 Plus calculator-I can't find the directions anywhere Thank you

89. ## physics

Runner A is initially 4.6 km west of a flagpole and is running with a constant velocity of 4.8 km/h due east. Runner B is initially 7.4 km east of the flagpole and is running with a constant velocity of 6.4 km/h due west. What will be the distance of the

90. ## Calculus

State whether the following are true or false. The square roots of 36 are + and - 6. I wrote down false for this cause I thought it was only + 6, but the real answer is true, and I want to know that how can it be negative? Also for this: Convert the

91. ## chem

a cyclist rides a bicycle at an average speed 24 miles per hour. If she wants to bike 195km, how long (in hours) must she ride.

92. ## Science

When 4.44 calories of heat was added to 5.40 degrees C, the temperature rose. What was the final temperature of the mercury? In factor label method.

93. ## Science

One edge of a copper cube is carefully measured and found to be 2.162 cm. An atom of copper is a sphere 0.2560 nanometers in diameter. Assuming that the volume of the cube contains nothing but copper atoms, how many copper atoms are contained in the cube?

94. ## Social Studies

How many states are their in the Southwestern United States?

95. ## American Government

The Virginia Plan and the New Jersey Plan were substantially the same True or False

96. ## physics

A certain car is capable of accelerating at a uniform rate of .94m/s^2. What is the magnitude of the car's displacement as it accelerates uniformly from a speed of 87km/h to one of 97km/h? Answer in units of m.

97. ## english

a pssage on rhetorical devices

98. ## Decision Criteria

You have available five different investment strategies and their respective payoffs for various states-of-nature as shown in the chart below. Which investment would you make under the different decision criteria? States of Nature Sever Decline Moderate

99. ## Social Studies 9

compare the government under a republic (commonwealth), an absolute monarchy and a constitutional monarchy. use the following headings the ruler, the role of law, and the rights of people. I don't understand how you would do this. like how would you use

100. ## math

how do yo convert the ratio 120:200 to a fraction in simpliest form

101. ## geometry

Given three collinear points X, Y, and Z and XY=8 and YZ=20, what is the length of a segment joining the midpoint XY and YZ?

102. ## Physics

A grenade is thrown from a trench that is 10 meters below groud level. The soldier throws the grenade at a velocity of 30 m/s at an angle of 60 degrees above the horizontal. Determine the horizontal distance the grenade will fly before it hits the ground,

103. ## Accounting

Case 13-5 Lease Classifications Doherty Company leased equipment from Lambert Company. The classification of the lease makes a difference in the amounts reflected on the balance sheet and income statement of both Doherty and Lambert. Required: What

104. ## criminal juctice 230

Prepare a 200- to 300-word response to the following questions: •What is the objective of punishment in the criminal justice system? •How does punishment apply to the overall criminal justice system? •How may punishment assist with achieving

105. ## Chemistry

Skeletal structural formulas of pentane,2 methyl butane and 2,2 dimethyl propane

106. ## word problem

Rahim has 5 boxes of sweets.Each box contains y sweets.His teacher gives him another 8 sweets. (a) Find the total number of sweets Rahim has in terms of y. (b) If y=4,how many sweets does Rahim have altogether?

107. ## word problem(algebra)

a recycling company collected d kg of waste paper in february&2400 kg of waste paper in march.The amount of waste paper collected in both february&march was 3 times that of the amount collected in january in terms of d. (a) Find the amount of waste paper

108. ## math

A farmer plans to enclose a rectangular region, using part of his barn for one side and fencing for the other three sides. If the side parallel to the barn is to be twice the length of an adjacent side, and the area of the region is to be 512 ft2, how many

109. ## Physics

An air track glider, 8.0 cm long, blocks light as it goes through a photocell gate. The glider is released from rest on a frictionless inclined track and the gate is positioned so that the glider has travelled 96 cm when it is in the middle of the gate.

110. ## Physics

a particle (C) of mass m = 0.2 kg can slide without friction on an inclined plane making an angle alfa (a) = 30 degrees with respect to the horizontal (aka ground) . (C) is launched at at an instant to=0 along a line Ox of greatest slope with an initial

111. ## physics

what happens when sun collapsed inside black hole?

112. ## chemistry

Calculate the density of a liquid if 48 mL of it has a mass of 45.79 g. Answer in units of g/mL

113. ## Chemistry

a middle-aged man has been diagnosed as being at high risk group of developing Coronary Artery Disease. Distinguish between the good and bad forms of this sterol. 'Explain the function of the good form of this sterol in the body. List the food groups that

114. ## physics

need help with the following question. if earth has a mass of 6.0*10^24 kg and a radius 6.4*10^6 m: a) find the change in gravitational potential energy of a meteorite of mass 150 kg as it moves from an infinite distance to the earth's surface. b) with

115. ## physics

Name two factors that dertermine the quality/timbre of a musical note.

116. ## physics

Name two factors that dertermine the quality/timbre of a musical note.

117. ## math

If 12a=6 tens. Find a

118. ## maths

how do you factorise x squared +2x+3

119. ## physical education

what are the arguments for and against drugs in sports

120. ## chemistry

how many carbons in nonane are in the sp2 hybridization state

121. ## ols

cost 10 pens and 5 pencils is100.then find the cost of 8 pens and 4 pencils

122. ## Statistics

Normal probabilities. 11% of all observations are less than z

123. ## Physics

A car moves in a circular path at 15 mph. Which of the following statements about the cars motion would be correct? a. The cars acceleration is constant. b. The cars velocity is constant. c. The cars speed is constant. d. The cars velocity and speed are

Ye Olde Toy Shoppe wants a set of toys: 1/4 of the toys should be blue, and 1/2 of the toys should be green. 2/3 of the toys should be giraffes, and 1/4 of the toys should be monkeys. Decription:???

125. ## human services

what factors affect a particiapnts expectations and attitudes?

126. ## Physics

Emily takes a trip, driving with a constant velocity of 79.5 km/h to the north except for a 22 min rest stop. If Emily's average velocity is 68.8 km/h to the north, how long does the trip take?

127. ## physics

A linear charge of nonuniform density E(x)=bx C/m, where b = 5.2 nC/m2, is distributed along the x-axis from 4.9 m to 6 m. Determine the electric potential (relative to zero at infinity) of the point y = 8.6 m on the positive y-axis.

128. ## maths

the mean of a set of test scores is 64. a new student takes the same test and scores 80 marks. when his score is added to the other scores, the mean increases to 65. how many students sat for the test altogether?

129. ## UCSD

A jetliner is moving at a speed of 230 m/s. The vertical component of the plane's velocity is 36.4 m/s. Determine the magnitude of the horizontal component of the plane's velocity.

130. ## resources for educating young children and diverse

when attempting to enhance the reading skills of a five year old child with a learning disability its important to? (a)read stories to more than one child at a time to facilitate group discussion (b)point out the components of the story such as the title

131. ## math physics i think

We have 2 cars. Car "A" and car "B" if car A weighs 3180 lbs If car "B" weighes 2000 pounds How fast would car "A" have to travel to knock car "B" 32 feet?

132. ## probability

Reiny, thanks!

133. ## chemistry

Is it possible to make acetic anhydride from acetic acid/glacial?

134. ## math

a)predict th erelationship between the graph of y=x^4+x^3 and the graph of y=[(x+3)^4+(x+3)^3]-1 b)determine the x-intercepts of each function in part aw. round your answer to 1 decimal place c)give the approximate domain and range of each functin in part

135. ## physics

A jet travels at 490 m/s. How long does it take to travel 227m? Answer in units of s

136. ## math

a gallery is displaying a collection of 12 sculpters and 20 paintings by local artists. how many sections are in the exhibit?

137. ## chemistry

Try to balance the following reactions by inspection. In each reaction, identify the substance reduced and the substance oxidized. (Use the lowest possible coefficients. Include states-of-matter under SATP conditions in your answer.) (a) CH4(g) + S(s) ¨

138. ## Coordinate Geomerty

three points have the coordinates A(2,9) B(4,3) and C(2,-5). The line through C with gradient 0.5 meets the line AB produced at D. Calculate the coordinates of D.

139. ## Chemistry

Based on the number of moles of H_2SO_4, determine the number of moles of Na_2CO_3 needed for the neutralization reaction. Sodium carbonate ( Na_2CO_3) is used to neutralize the sulfuric acid spill. How many kilograms of sodium carbonate must be added to

140. ## MATH

Can someone please HELP me figure this out? According to statistics gathered as part of a research project by a group of statistics students on the college campus, 376 out of the 439 deaths attributed to lightning strikes were male. If all of the names of

141. ## Government US

Thomas Jefferson believed in constitutional democracy and the power of the people must never be restrained. This statement is said to be false. Can some one explain to me why this is false when Jefferson was the ONE to promote the bill of rights and was

142. ## calculus

find an equation of the tangent line to the curve at y=2x^3+5x, (-1, 3)

Write the balanced, complete, and net ionic equations for each precipitation reaction. 1) AgNO_3 + CoCl_2 ---> BE: AgNO_3(aq) + CoCl_2(aq) ---> AgCl_2 (aq) + Co(NO_3)(aq) CIE: Since the balanced equation is all (aq) there is no reaction so no complete or

144. ## chemistry

how do you get to the ionic equation for sodium hydroxide (aq) reacting with sulphuric acid.

Hi! What is the formula of the volume and surface area of cylinders? I checked my textbook and it didn't really say. My teacher didn't really explain at all. If somebody could help explain this it would be really great. Please help! Thank you!