Questions Asked onJanuary 29, 2011

1. Math

A drugstore sells a drug costing \$85 for \$112 and drug costing \$175 for \$238. A, If the markup policy of the drugstore is assumed to be linear, write an equation that expresses retail price R in terms of cost C (wholesale price). B, what does a store pay

2. algebra

name the property that justifies (-2.6) +7 = 7+(-2.6)

3. CHEM EASY

Which indicator is best suited to determine the equivalence point of a titration of diethlyamine with HBr? pKb of diethylamine=3.16 A) phenolpthalein pKHIN ~9 B) bromo blue pKHIN ~4 C) alizarin yellow pKHIN~11 D) methyl violet pKHIN~ 1 E) phenol red pKHIN

4. Physics

How much energy in kilocalories is expended against gravity alone by a 75- kg man climbing 1500 m up a mountain?

5. chem

Determine the electron and molecular geometries of each of the following molecules. For those with more than one central atom, indicate the geometry about each central atom. (Enter your answers in the order given in the skeletal structure from left to

6. stats

A company that manufactures and bottles apple juice has a machine that automatically fills 16-ounce bottles. There is some variation, however, in the exact amount of juice dispensed into each bottle. From a large number of observations taken over a long

7. social studies

I answered the question In what direction did the Qin dynasty expand the most? I said to the South then I was asked how do I think the East China Sea affected the Qin dynasty's expansion? My answer is- The Sea would allow the ability to trade with more

8. physics2

A charge of -6.5 micro-Coulombs is placed at the origin of a coordinate system. Another charge of -7.6 micro-Coulombs is placed at x = +0.29 m, y = +0.17 m. A third charge of +14 micro-Coulombs is placed at x = -0.29 m, y = 0 m. What is the magnitude of

9. Physics Check

How much does it cost to operate a 1.0-W electric clock for a year if electricity cost \$0.05/k Wh? I think the answer is =\$0.44 a year with the calculations of 1.01*24hrs*365=8,760Whr/1000kw = 8.76kWh 8.76 kWh * 0.05 = 0.44 a year. Is this correct?

10. Physics

Using energy considerations and neglecting air resistance, calculate how far a rock will rise above its point of release if it is tossed straight up with an initial speed of 10m/sec. Using energy considerations and neglecting air resistance, calculate how

11. Accouting

Bob night opened "The general's favorite Fishing Hole" The fishing camp is open from April through September and attracts many famous college basketball coaches during the off-season. Guests typically register for one week, arriving on Sunday afternoon and

12. Science

How many liters of carbon monoxide at STP are in 3.85 x 10^24 molecules of carbon monoxide?

13. physics2

Charges are placed on an equilateral triangle (all angles are equal and equal to 60 degrees). The length of each side of the triangle is 5.7 meters. A charge of +7.1 micro-Coulombs is placed at the bottom corner of the triangle and another charge of +7.1

14. Chemistry - Blue Printing Experiment

Which of the two reactions in Blue Printing is an oxidation-reduction reaction? What is the oxidizing agent and the reducing agent? Fe^3+ + C204^-2 (oxalate) -> Fe^2+ + CO3 Fe^2+ + Fe (CN)6^-2 -> Fe3[Fe(CN)6]2 Can the second reaction occur in the absence

15. math

Aerosol cans carry clear warnings against incineration because of the high pressures that can develop upon heating. Suppose a can contains a residual amount of gas at a pressure of 755 mm Hg and a temperature of 25 °C. What would the pressure be if the

16. physics

The spring of the pressure gauge has a force constant of 1,000 N/m,and the piston has a diameter of 2.00 cm.when the gauge is lowered into water,at what depth does the piston move in by 0.500 cm?

17. NOUNS, PRONOUNS, AND ADJECTIVES

We left King ranch on a december day in 1873. On the Santa Fe trail, we hit bad weather. The Red river was flooded and it took us four days to get the Cattle across. All in all, it was a hard trail drive, but we got our Longhorns to the railroad at

18. college Chemistry

Popcorn kernals pop independently (i.e. unimolecularly). For one brand at constant temperature, 11 kernals pop in 10 seconds when 240 kernals are present. After 145 kernals have popped, how many kernals will pop in 10 seconds?(Your answer may include

19. physics

A uniformly charged conducting sphere of 1.2 m diameter has a surface charge density of 7.1 µC/m2. (a) Find the net charge in coulombs on the sphere. (b) What is the total electric flux leaving the surface of the sphere?

20. Personal Finance

NEED HELP IMMEDIATELY, HAVE UNTIL 10P.M. CENTRAL TO HAVE ANSWERS?? 1.Determining the Future Value of Education. Jenny Franklin estimates that as a result of completing her master’s degree, she will earn \$6,000 a year more for the next 40 years. a.What

21. geometry

maddie throws a baseball fom third base to first base. The four go foot lines between the bases from a square which number is the best estimate of how far maddie throws the baseball

22. physical science 2

the force required to maintain an object at a constant velocity in free space is equal to: b: the mass of the object. c: the force required to stop it. d zero

23. math

A car drives down a road in such a way that its velocity ( in m/s) at time t (seconds) is v(t)=2t^1/2 +2 . Find the car's average velocity (in m/s) between t=4 and t=9. i really need help with thisss

24. physics2

A Gaussian surface encloses two charges. The total electric flux through the Gaussian surface is 8.3 x 106 N m2/C. If one of the charges is -14.9 micro-Coulombs and the magnitude of the electric force between them is 2.76 Newtons, what is the distance

25. Chemistry (w.e or DrBob222)

Calcium Carbonate and aluminum silicate are mixed together and heated. A mixture of calcium oxide, carbon dioxide, aluminum oxide and calcium silicate is produced. Write the balanced equation for this reaction. My Work: 4CaCO3(s) + Al2(SiO3)3(s) → CaO(s)

26. mcckc.edu

A 0.10MNaCl solution is blank (iso/hypo/hypertonic) to a 0.10M glucose solution

27. physics

A 65.0-Ù resistor is connected in parallel with a 117.0-Ù resistor. This parallel group is connected in series with a 22.0-Ù resistor. The total combination is connected across a 15.0-V battery Find the current in the 117.0-Ù resistor. Find the power

28. Algebra

What is 194 times 10 to the third power in scientific notation

29. computer programming

small startup software developer company needs to create a program that will calculate the pay of its employees. For the third version of the program, the company wants the program to accept an employee’s name, the number of hours the employee worked,

30. History

I need four topics to compare and contrast Machiavelli's The Prince and Castiglione's The Courtier. Thanks.

31. geometry

the perimeter of a square garden is to be at least 30 feet but not more than 64 feet.find all the possible values for the length of its sides.

32. accounting

Write a 700- to 1,050-word paper, using APA guidelines, based on the scenario below. You want to start your own business. You found an investment group that is willing to give you the capital needed for the first year of your business, but only if you can

33. math

If a bicycle wheel has a diameter of 63 centimeter. During A journey the wheel make a 510 revolution .how many meter does the bicycle travel

34. Physics

What is the efficiency of an athlete who consumes 3000kcal of food and does 2.5 x 10*6 J of useful work?

35. Calculus

A particle moves at varying velocity along a line and s=f(t) represents the particle's distance from a point as a function of time, t. Sketch a possible graph for f if the average velocity of the particle between t=2 and t=6 is the same as the

36. Science

If a radioactive isotope has half life of 5 days,how long will it take for its radioactive strength to be a maximum of one thousandth,(1/1000) of its original value? Can anyone give me a VERY SIMPLE explanation of this please? Thank you.

37. Calc

Suppose that a function f(125)=52 and f'(125)=4. Estimate f(123.5)

At issue in the twenty-first century is the trade-off between the necessity of writers, musicians, artists, and movie studios to profit from their work and the free flow of ideas for the public benefit. Movie (and music) industry participants claim that

39. math

Translate the following English sentence into a symbolic sentence with quantifiers: Between any integer and any larger integer, there is a real number. (universe is real numbers)

40. Spanish

33. Me gustaría comer un sandwich _______ jamón y queso. a. porque b. de c. en d. por Not sure.. 34. Voy a la fiesta solo pero _______ ir con Francisca. a. me gusta b. voy c. soy d. prefiero D? Thanks -MC

41. math

Minimize c = x + y subject to x + 5y ≥ 6 5x + y ≥ 6 x ≥ 0, y ≥ 0.

42. Chemistry

Calcium Carbonate and aluminum silicate are mixed together and heated. A mixture of calcium oxide, carbon dioxide, aluminum oxide and calcium silicate is produced. Write the balanced equation for this reaction. My Work:

43. physical science 2

It takes 6 seconds for a stone dropped from rest to the bottom of a well,what is its final speed A; 6 meters/second B: 30 meters/seconds C: 36 meters/seconds D: 60 METERS/SECONDS A is incrrect

44. Calculus

Are the functions continuous at the point being approached? lim y>1 sec ( y sec^2y - tan^2y -1 )

asked by Kelly C
45. physical science

a car traveling in a lage circlepasses by a motorcycle that is trveling in a straight line north to south.both of their speedometers read 10m/s.which statement is true; a: the car and motorcycle have the same speed ,but different velocities,b:the car and

46. pop culture and the arts

I need to give two examples that illustrate the relationship between art and American culture.

47. Chemistry

Calcium Carbonate and aluminum silicate are mixed together and heated. A mixture of calcium oxide, carbon dioxide, aluminum oxide and calcium silicate is produced. Write the balanced equation for this reaction. My Work:

48. Math

Paul males 33 of 40 free throws. He wantes to use this ratio to predict n, the number of free throws he will make out of 198 attempts. Write a proportion he should use.

49. Applied Business Math/Colleg student

Solve the problem and reduce to lowest terms? 2/3+1/6+11/12=

50. physics

Point A is at a potential of +240 V, and point B is at a potential of -160 V. An α-particle is a helium nucleus that contains two protons and two neutrons; the neutrons are electrically neutral. An α-particle starts from rest at A and accelerates toward

51. physical science 2

A block is dragged at constant velocity in a straight line path across a level surface by force of 6 N. What is the friction between the black and the surface? a: 6 N B: less than 6 N C: More than 6N d: ZERO

52. Math

If possible, could a math tutor check the math post question that "daylo3" asked at 6:42 pm today, that I answered? I don't usually answer posts that I am not 100% sure of the answer. I would like to know if the way I approached this problem is correct?

53. health

Which group of words describes a condition that results from aging? A. Presbyopia C. Muscle tone B. Articulation D. Astigmatism

54. physics2

A uniform electric field of 2.1 x 106 N/C is directed in the positive x direction. A charge of -4.3 micro-Coulombs with a mass of 7.5 kg is initially moving at 18 m/s in the positive x direction before it enters the field. How many seconds does it take

55. Calculus

For f(x)=lnx, construct tables, rounded to four decimals, near x=1, x=2, x=5, and x=10. Use tables to estimate f'(1), f'(2), f'(5) and f'(10). Then guess a general formula for f'(x).

56. math

2.-The longest one-word name of any place in America is Chargoggagoggmanchauggagoggchubunagungamaugg.This name for a lake near webster, Massachusetts, is 45 letters long. It is a Native American name that means "You fish on you side, I'll fish on mine, and

57. Public Finance

A corporation has \$7 mil. in equity. During the tax year it takes in \$4 million in receipts and earns \$ 2 million in capital gains from sale of subsidiary. It incurs labor costs of \$1 million, interest costs of \$250,000, material costs of \$500,000, and

58. HEALTH CARE COMMUNICATION STRATEGIES

Traditionally healthcare organizations have been based on the bureaucratic model. In what ways has the bureaucratic model enhanced healthcare communication? In what ways has it been a detriment? Would you recommend a different model to improve

59. cdgf

what is a word whit the letters b,o,n,s,p,e,q

60. Advanced Functions Math

Given the equation y=2^x, predict the equation for the graph that has been reflected in the y-axis. Given a vertical stretch by a factor of 5, translated 2 units right and 5 units down

61. health physics

Assuming that at the beginning of time (big bang; creation of the universe) there were equal numbers of U-235 and U-238 atoms produced, estimate the age of the Earth (using terrestrial U-235 and U-238 abundances).

62. accounting

Write a word problem involving a discounted price. Describe the situation and pose the question, but DO NOT SOLVE the problem.

63. Physics

I made a pan flute with copper tubing (3/4 in diameter) to correspond to the following notes/lengths: C - 15.4cm D - 13.6cm E - 12.0cm G - 9.8cm A - 8.7cm The original instructions called for PVC pipe at 1/2in diameter, so the notes are off. How do I

64. us history

WAS THE BEER AND WINE REVENUE ACT A REFORM,RECOVERY,OR RELIEF

65. Philosophy

Create an 11- to 14-slide PowerPoint® presentation answering one of the topics found in Appendix A, as well as 3 to 4 principle issues related to your chosen topic. My topic is Should there be a set of uniform morals standard? Thank you

66. math

need help I need to have my answer in cups: 2cups N ______ ______ 7 people 46 people I did the top part right 2x46/7=13.1428 but i need to turn it into cups...13 and ___ cups.. don't know how to change the end number to cups...

67. physics

A ball is fired with an inital velocity of 500 m/s at an angle of 30 degrees above horizontal across a level field. Calculate the maximum height, the time of flight, and the range of the ball. Okay, so I know that this is a projectile problem but I am kind

68. renewable energy

If a solar cell with 2 m^2 surface area is placed in a direct light having 780 W/m power density provides an output power of 346 W, what is the efficiency in percent? (0 to 100 %, no decimals). Provide your answer in base units (no scientific notation or

69. physics2

A charge of +q is placed at y = 0 m. Another charge of +2q (twice the other charge) is placed at y = +6.52 meters. Where on the y axis is the total electric field zero?

70. Math

COMPUTER PRODUCTION MVE Enterprises can manufacture four different computer models; the Student, Plus, Net, and Pro models. The following gives the configurations of each model: STUDENT PLUS NET PRO Processor Celeron Celeron Celeron Pentium Hard Drive 20

71. Chemistry

Raising the temperature of a sample of water will typically(decrease/increase) the solubility of (all/some) dissolved gases. Is it decrease, some?

72. MATH: Pre-Cal/Trig

The length of a rectangular flower garden is 6 more feet than its width. A walkway 3 feet wide surrounds the outside of the garden. The total area of the walkway itself is 288 square feet. Find the dimensions of the garden.

73. trig

find the distance from the orgin to each of the following points .If your answer is irrational,leave it in radical form. a.(3,-7) b.(-4,6) c.(0,5) d.(6,0) e.(-2,-4) f.(0,0) my answers : what do they mean by leave it radical form a.sqrt 58 b.Sqrt 52 = 2sqrt

74. Physical Science 2

Ten seconds after starting from rest,a freely falling object will have a speed of about______ rn/s A: 10 B: 50 C: 100 D: 120 I know that the answer A is not correct.

75. chemistry

how do you balance CuSO4* 5H2O

76. Chemistry

When 1.53 grams of silver metal are dropped in 500. mL of 2.0 M acetic acid, how many liters of gas are evolved at STP?

77. Physics

A stone is thrown directly upwards with an initial speed of 34.5 m/s . What is the maximum height the stone will reach?

78. Math

Find the missing #. 1,3,7 _ ,31. Thx

79. renwewable energy

How much energy is required to accelerate a 8000 kg car from 14 km/h to 95 km/h?

80. physical science

A kg ball of lead rests next to a 10 kg rock. which statement below is true:a:the lead ball and rock have the same amount of inertia,b:if the lead ball and the rock fell from the same height in a vacuum, the rock would hit the ground first because it is

81. algebra II

factor completely: 8h^3-125

82. science

Calculate the uranium ratios in the natural uranium decay chain using radioactive decay relationships. Compare to the value obtained using published natural abundances.

83. geometry

What is the permineter and area of a rectangle that has a length of 8 feet and width of 3 feet.

84. government

what is constitutionalism, its history, and why we learn about it today

85. English Comp.

I need help writing a sentence outline for my paper. My thesis statement is: "There is a noticeable imbalance in racial diversity in the pharmacy field, prompting needed reforms in Schools of Pharmacy training programs of cultural competence". I also would

86. Math

Hot numbers in a lottery are numbers that keep coming up. Cold numbers are numbers that have not "hit" in awhile.Some people select hot numbers or cold numbers when buying a ticket. Using probability,explain whether this makes sense. Please answer this

87. comp

How do I write two sentences about family financial goals using the past progressive and future progressive tenses?

88. Chemistry

How to know overall charge of molecule? see question # 12 here, why is it -1? how do you know? itech.pjc.edu/tgrow/2210/chm2210ps4sol.pdf

89. English Comp.

Is this a decent thesis statement or is it too long? The imbalance in racial diversity in the field of pharmacy brings a need for more in-depth cultural competency training programs in colleges of pharmacy so they can better understand, relate, and provide

90. Math

Solve for x: 8^(6x-3)=(1/16)^(5x-9)

91. ALGEBRA

I NEED DATA TO MAKE GRAPHS, BUT NOT TO MUCH INFO

92. Chemistry

Help! I need to do this review question and don't know where to start ! The label on a bottle of vinegar claims that the bottle conatins 5% (m/v) of acetic acid. In order to test this claim, a 50ml sample is titrated with sodium hydroxide. 166ml of 0.25

93. Chemistry

When 7.76 grams of magnesium bicarbonate are mixed with 300. mL of 0.10 M hydrocyanic acid, how many liters of gas are evolved at STP?

94. Science

Why is blood pressure expressed with 2 numbers?

95. science

balance the chemical equation __MgO + Cl --> __MgCl + __O 2 2 2

asked by Roy S
96. Math

How do I solve the following equation 4-7^2x=1

97. Sci 162

I would like to know what Gayle should do about telling Patrick that she is HIv positive.

asked by Patricia Brickhouse
98. Chemistry

When 2.05 grams of aluminum metal are dropped in 650. mL of 6.0 M hydrochloric acid, how many liters of gas are evolved at 20°C, 1.07 atm?

99. Chemistry

When 1.53 grams of silver metal are dropped in 500. mL of 2.0 M acetic acid, how many liters of gas are evolved at STP?

100. Chemisrty

When 7.76 grams of magnesium bicarbonate are mixed with 300. mL of 0.10 M hydrocyanic acid, how many liters of gas are evolved at STP?

101. Calc

suppose that f(x) is a function of f(125)=52 and f'(125)=4. estimate f(123.5)

102. acct

Business is going well for Email Designers. The board of directors of this family-owned company believes that Email Designers could earn an additional \$1,000,000 income before interest and taxes by expanding into new markets. However, the \$4,000,000 the

103. english

what would the tragic vision of the play othello be?

104. english

would be this be a viable thesis for the play othello? The suffering that Othello (the tragic figure) brings to other charcters, contributes to the tragic vision- that jealousy has the power to destroy even love. Any suggestions on how to improve it?

105. language arts

Selection of hiking shoes should be your first concern. Even a one-day hike can be misery without comfortable shoes. The most effective combination of sentences 3 and 4 would include which of the following groups of words?

106. math-precalc

In the shot put, the shot must land within a 40 degree sector. Consider a coordinate system where the vertex of the sector is at the origen, one side lies along the positive x-axis, and the units are meters. If a throw lands at the point with coordinates

107. Public Finance

Suppose the corporate income tax were eliminated and corporate income allocated to shareholders on a pro rata basis according to their proportion of outstanding stock. How would such a change in tax policy affect the excess burden and incidence of the tax,

108. mat/116

can someone help in finding the ordered pair for this equation. 7x-9y=63 9y-7x=-63

109. mat/116

can someone help me in determining wether these numbers are a solutions of this inequality. y-11>2y-2 3,-16,-17,-1

110. math

Find the volume of the solid obtained by rotating the region bounded by the given curves about the specified axis. x=2y^2 , y=1 ,x=0 about the y-axis

111. mat/116

Thanks you guys for the past help, but I am stuck on this line graphing. So can someone help in solving and graphing this compound inequality. 9x+1>= -53 or 4x+3>= -9 what would the solution {xlx>...}be.

112. US HISTORY HELP!

What was the first hemisphere “discovered” by the Europeans? What were the impacts of this discovery?

113. science

If you Weighed 360 pounds on Earth with your space suit on, what would you weigh on the moon? Why?

asked by tyson lawson
114. science

name 3 properties that can be used to classify unknown substances

asked by Roy S
115. Chemistry

Need help balancing this equation, just the coeffecients, do not need to balance the charges. The numbers are subscripts: Ca0.41Mg0.36Mn0.50Fe1.76Al2Si3O12 + H + H20 Al(OH)3 + FeOOH + MnO2 + Ca + Mg + Si(OH)4

116. renewable energy

How much total kinetic energy is available in a diesel locomotive weighing 11000 kg travelling at 2.0 km/h?

117. renewable energy

If you (64) are standing on a 72 m hill, what is you potential energy? (gravity = 9.81 m/s)

118. Algebra

how do I check my answer to a problem. The problem is: x/5 - 1/2 = 3 I know the answer is 35/2 but how do you check it. 35/2 /5 - 1/2 = 3?

119. Social Studies

How do we describe the 1917 Russian Revolution and how it affected the church.

120. math

n + (n + 1) + (n + 2) =45

121. science

need a science project for 7th grade using toy train.

122. Social Studies

What were the 13 colonies rules before the U.S. Constitution was created?

123. Chemistry

When 2.05 grams of aluminum metal are dropped in 650. mL of 6.0 M hydrochloric acid, how many liters of gas are evolved at 20°C, 1.07 atm?

124. maths

what could this question be 1,4,...,...,25,36,...