# Joanne

Most popular questions and responses by Joanne
1. ## algebra

The volleyball team at West View High School is comparing T-shirt companies where they can purchase their practice shirts. The two companies, Shirt Box and Just Tees, are represented by this system of equations where x is the number of T-shirts and y is

2. ## Math

Expressed to the correct number of significant figures, the sum of two masses is 445.2 grams. WHich two masses produce this answer? 1) 210.10 g+235.100g 2)210.100 g + 235.10 g 3) 210.1 g + 235.1 g 4) 210.10 g+ 235.10 g I think the answer is 2 but I don't

3. ## Language Arts

The seashells were iridescent in the sunlight. a. cloudy b. drying out c. breaking into pieces d. shimmering with colors I choose "d" Am I right?

4. ## english

Learning is to sail challenging and exhilarating it is also not the easiest thing to do. is this sentence a dangler sentence.

5. ## Microeconomics

Mrs.Simpson buys loaves of bread and quarts of milk each week at prices of \$1 and 80 cents, respectively. At present she is buying these products in amounts such that the marginal utilites from the last units purchased of the two products are 80 and 70

6. ## Chemistry

Balance the equation in aqueous basic solution: As2S3(s) + H2O2(aq) → AsO43-(aq) + SO42-(aq) I normally understand how to balance redox equations, but this one confuses me because I would normally think that the As2S3 is being reduced to AsO4^3-, but

7. ## Chemistry

If a reaction yields 2.5165 × 10^8 kJ, then how much mass was lost? (User 3.00 x 108 m/s as the speed of light) 2.30 × 10^-3 kg 5.60 × 10^-3 kg 2.80 × 10^-12 kg 5.60 × 10^-12 kg Please help.

8. ## Chem.

An aspirin tablet weighing 0.400 g has been analyzed and contains 68.2 % ASA (180.16 g/mol) by mass. A student dissolved the tablet in hot NaOH and the cooled solution was diluted with DI water to the mark in a 250 mL volumetric flask. Exactly 3.00 mL of

9. ## History-Civil War

Thank You anyway for your help !

10. ## chemistry

calculate the velocities of electrons with de Broglie wavelengths of 1.0x10^2nm and 1.0nm

11. ## earth

The radius of the sun is 695 500 km What is its approximate volume written in Scientific notation?

12. ## statistic

Two samples each of size 25 are taken from independent populations assumed to be normally distributed with equal variances. The first sample has a mean of 35.5 and standard deviation of 3.0 while the second sample has a mean of 33.0 and standard deviation

13. ## Physics

Really need help with this asap plz~ there is a 4kg wooden block on top of a wooden ramp forming an angle of 37 degrees above surface.The block is placed 1.2 m up on the ramp and the ramp is connected to another wooden flat board.So when the block slides

14. ## statistics

SAT scores are normally distributed. The SAT in English has a mean score of 500 and a standard deviation of 100. a. Find the probability that a randomly selected student's score on the English part of the SAT is between 400 and 675. b. What is the minimum

15. ## English

Anne Bradstreet's "The Author to Her Book" I have to explain the irony in the poem. I thought irony would be like a firehouse burning to the ground. I don't see any irony in the poem what am I missing?

16. ## math

What are three different ratios for 5 circles and 4 squares?

17. ## Statistics

In a study of pleas and prison sentences, it is found that 40% of the subjects studied were sent to prison. Among those sent to prison, 20% chose to plead guilty. Among those not sent to prison, 10% chose to plead guilty. 3.3.a (0.5 pt) If a study subject

18. ## social studies

How did the Emancipation Proclamation change the nature of the Civil War, if it did at when he issued it ?

19. ## chem

The pressure 15.0 meters under water is 248 kPa. what is this pressure in bar? (how would you set this up) what is the pressure in torr? I believe the second one is set up like this: 248 kpa * (760 torr/ 101.325 kpa)= 1860.15.. Although, if the lowest sig

20. ## Chemistry

If the density of ocean water at depth of 10,000m is 1.071g/ml and if 25.0g of water at that depth contains 190mg of KCl what is the molarity of KCL?

21. ## history-Civil War

Sorry Sra...your sites didn't help..i was in sooo many sites last two days...no discussion found on this question..you don't know the answer to this ?

22. ## History-Civil War

Can you please...help...give me more to the answer you gave me earlier today..Was there any course of action that Abraham Lincoln and his administration could have persued that might have prevented the outbreak of war between the North and the Confederacy

23. ## english

Anne Bradstreet's "The Author to Her Book" I realize she is writing about her poems and not a child but where is the irony in that?

24. ## elementary statistics

The distribution of cholesterol levels in teenage boys is approximately normal with u=170 and o=30. Levels above 200 warrent attention. Find the probability that boy has a cholesterol level greater than 225.

25. ## Math

What are two pairs of numbers of 105 as their least common factor ?

26. ## Organic Chem

4 KO2 + 2CO2 rightwards arrow 2 K2CO3 + 3 O2 How many moles of O2 can be produced from 12 moles of KO2 and 10 moles of CO2? If you were to produce 100.0 grams of O2 what would be the percent yield of the reaction?

27. ## Statistics

Suppose you are given data from a survey showing the IQ of each person interviewed and the IQ of his or her mother. That is all the information you have. Your boss has asked you to put together a report

28. ## Maths

The volume of a hemisphere is 250 ----- pi 3 Work out the total surface area of the solid hemisphere. Give your answer as a multiple of pi. Thank you.

29. ## chemistry

a 2.55g sample of an unknown has a volume of 3.73 cm. what is the density of the unknown

30. ## us history

Match each nation on the left with the correct description of the problem it presented for U.S. foreign relations following the Revolutionary War. a. Britain 1. threatened american b. france commerece in c. spain mediterranean d. barbary coast 2. demanded

31. ## BIOLOGY

IS A PLANT CELL AN EXAMPLE OF A UNICELLULAR ORGANISM? iS AN ANT AN EXAMPLE OF MULTICELLULAR ORGANISM? What are Plants Plants are multicellular photosynthetic organisms that are believed to have evolved from green algae. Both groups have chlorophylls a and

32. ## Physics

When a mass of 21 g is attached to a certain spring, it makes 16 complete vibrations in 4.4 s. What is the spring constant of the spring? Answer in units of N/m

33. ## statistics

1. Find the mean, median, and range for each of the two data sets? 2. Find the standard deviation using the rule of thumb for each of the data sets. 3. Compare the two sets and describe what you discover. The following data sets shows the ages of the first

34. ## Mathematics

The graph of y = f(x) is transformed to give the graph of y= -f(x+3). The point A on the graph of y=f(x) is mapped to the point P on the graph of y= -f(x+3). The co-ordinates of point A are (9,1). Find the co-ordinates of point P. Thank you very much

35. ## Thermodynamics

Gas is contained in a n 8L vessel at a temperature of 20¡ãC and a pressure of 9atm. a)Determine the number of moles of gas in the vessel. b) How many molecules are there in the vessel?

36. ## English

Martin Amis's characterizations for Muhammad Atta in "The Last Days of Muhammad Atta" I read it but i don't see ANYTHING based on how he is characterized :( i can't post the website but if you type 'Have they been with you at all times?' in google than ull

37. ## Physics

A load of 47 N attached to a spring that is hanging vertically stretches the spring 0.22 m. What is the spring constant?

38. ## physics

A harmonic wave is traveling along a rope. The oscillator that generates the wave com- pletes 48.0 vibrations in 25.8 s. A given crest of the wave travels 413 cm along the rope in a time period of 10.5 s. What is the wavelength? Answer in units of m

39. ## Economics

Unable to find any info to answer my question I recently posted about.. role of economic theory in the way economics are run today & no clue found as to concrete examples of same...went through all your sites you suggested and looked many, many sites

40. ## History-Civil War

To - Damon....any comments on the question I posted on 07-10-11 @ 9:48 pm. I always appreciate your remarks...they help

41. ## science

was the bacteria that caused the bubonic plague a unicell or a multicell

42. ## college

how can i solve this problem? The number of tickets sold each day for a upcoming peformance of Handel's Messiah is given by N(x)=0.4x^2+8x+11, where x us the number of days since the concert was first announced. When will daily ticket sales peak and how

43. ## algebra I

If you toss a coin, the probability of gettig heads is 1/2. If you toss a coin 2 times. the probability of getting heds each time is 1/2*1/2 or (1/2)^2. -Write an expression to represent the probability of tossing a coin 'n' times and getting 'n' heads.

44. ## Algebra

A snack stand sells hot dogs for \$2 and hamburgers for \$3. If you want to spend exactly \$14, write an equation to model this situation. If you purchase one hot dog , how many hamburgers will you purchase?

45. ## Physics

a place kicker must kick a football from a Lint 36 meters from the goal. As a result of the kick, the ball must clear the crossbar, which is 3.04 meters high. When kicked, the ball leaves the ground with a speed of 20 meters per second at an angle of 50

46. ## Algebra

mark can paint the fence in 40 minutes and manny can paint the fence in 30 minutes together how long will it take to paint the fence

47. ## chemistry

#1 A pipet delivers 10.5, 10.3, 10.9 and 10.7 ml (a) find the mean volume and deviation from the mean for each and calculate the average deviation from the mean (b) calculate the relative deviation (in %) for this set of data. Relative deviation (%) =

48. ## History-Civil War

1865: Marching through Georgia In terms of supply, how was Sherman"s march different than other Civil War campaigns? What I found was..Sherman telegraphed President Lincoln, asking him as a gift to Savannah, he would need 150 guns along with plenty of

49. ## word problems

Paul read 20 pages of a book in 15 minutes. (a) What is Paul’s reading rate of pages per minute? (b) If he continues to read at the same rate, how many pages will he read in 1 hour?

50. ## Science

Under conditions of high temperature, two protons could combine to form a deuterium necleus in the following reactions: p + p ----> 2H + e+ + ve + energy Write the equation for this reaction in terms of the nucleons involved by replacing the deuteriu

51. ## chemistry

the oxidation number of Mn in MnO4- is +4 (true or false)

52. ## chemistry

#1 A pipet delivers 10.5, 10.3, 10.9 and 10.7 ml (a) find the mean volume and deviation from the mean for each and calculate the average deviation from the mean (b) calculate the relative deviation (in %) for this set of data. Relative deviation (%) =

53. ## math\

2. A data set consists of a set of numerical values. Which, if any, of the following statements could be correct? a. There is no mode. (True or False) b. There are two modes. (True or False) c. There are three modes. (True or False)

54. ## History-Civil War

How important was the Union blockade to defeating the Confederacy, and how could the Union have won without it ?

55. ## social studies

What political dangers did President Lincoln face when he issued the Emancipation Proclamation ?

56. ## Algebra

Okay, so I am stuck on solving this using the substitution method. The mortgage department of the company is selling two model homes that are located on the same block. The square footage, as well as the type of model, determines the cost of these homes.

57. ## English

1. In the following sentence, what part of speech is the word Tearfully? Tearfully, I hung up the phone. A. Adjective C. Preposition B. Adverb D. Interjection 2. In the following sentence, how is the underlined phrase used? Both Joe and I wanted the last

58. ## math

Louise travels 10 miles in 15 minutes and alice drives 23 miles in 30 minutes. who is faster?

59. ## economics

Over the last 30 years in the United States, the realprice of a college education (i.e., after adjusting for inflation) has increased by almost 70 percent. Over the same period, an increasing number of high school grad- uates have sought a college

60. ## History-Civil War

To Damon, if available, this is my last question in this subject..for me very confusing..don't know where to start or what I'm looking for. Do you see an overall vision, or approach to command and strategy, in Ulysses S. Grant's actions as overall military

61. ## History-Civil War

1865-Marching through Georgia How did Sherman's march affect the Confederacy, and advance the cause of Union victory ?

62. ## social studies

Battle of Chanellorsville 1863....of all the battles fought by Robert E. Lee through 1863, this battle was his most impressive victory...am I correct ?

63. ## social studies

What political dangers did President Lincoln face when he issued the Emancipation Proclamation..I don't think Damon was able to help me or I'm looking at the question the wrong way ?Need your input on this Ms.Sue....Thank You

64. ## chemistry

how many grams of hydrogen are produced when 1gram of aluminum is reacted?

65. ## Child Psychology

Sally can tie her shoes but only with her mother's help. This fact suggests that tying shoes is

66. ## United States History

What were the NORTHERN WHIGS views regarding the following: -slavery -women's suffrage -prohibition of alcohol -guarantee of free public education -aid/help for handicapped -right to education for women and African Americans -practice of religion -Native

67. ## math

Add and reduce to lowet terms m/x^2-9 + 1/3x-9

68. ## math

Business and finance. Julio works as a quality control expert in a beverage factory. The assembly line that he monitors produces about 20,000 bottles in a 24-hour period. Julio samples about 120 bottles an hour and rejects the line he finds more than 1/50

69. ## Psychology

Which parts of the brain begin to change first during development? What function would be affected due to these changes? What region of the brain changes last?

70. ## us history

Which statement was NOT used by the British to justify taxing the colonies after 1763? A. The British debt had increased as a result of the French and Indian War B. There were heavy administration expenses associated with maintaining the empire. c. These

71. ## Algebra

Solve (8X5)+(8X1)-(2x6)+6-2x(2-1)

72. ## physics

a projectile is fired at 50 meters per second at an angle of 30 degrees below the horizontal off a cliff that is 50 meters high. How far away and at what speed and angle will this projectile land?

73. ## math

Ms Adams gave 1/4 of an apples to each of 10 children. How many apples did she give to the children in all?

74. ## Math help pls

X^-2 - Y^-2 __________ X^-1 + Y-1

75. ## College biology

In testing synaptic transmission, you found that there were 300 failures in 1000 trails of stimulating a presynaptic neuron. The average EPSP size was .7 mV +/- .2mV (mean +/- SD), and the average 'mini' EPSP size was .6mV +/- .1mV. Does the synapse obey

I have a foster child (my niece) who has been through a lot in the past year. She is having huge difficulty in school. She is in 1st grade. My 21 year old daughter is home with her trying her best to help her but it is getting overwhelming to get her to

77. ## biology

How would you measure chloride current during an action potential

78. ## Economics

What is the role of economic theory in the way economies are run today? Give some concrete examples.

79. ## history-Civil War

Upon retreating from Petersburg, were there any options open to Lee that might have prolonged the War? Please chech if my answer is correct... No, Lee retreated from Petersburg and attempted to link up with the remnants of Confed. Gen. Johnson's defeated

80. ## social studies

Here goes..now I'm really upset with all this....New question..I need something to guide me...How did the changing command situation of the Army of the Potomac influence Gettysburg ? Also, did the elevation of George Gordon Meade make the Union victory

81. ## social studies

Please correct me if I'm wrong....Of the Union generals covered in the course through 1863, who do you consider the worst ? I say ...Gen. George B. McClellan ?

82. ## social studies

Describe how influential you would say the cold war has been on the world of today ?

83. ## History-Civil War

What political dangers did President Lincoln face when he issued the Emancipation Proclamation ?

84. ## math

If I place \$300.00 in an account that accumulates 3%, how much is it worth in 30 years?

85. ## biology

where can i find practice ap bio questions?

86. ## Statistics (2 mc probs)

I have the following two multiple choice questions that are really throwing me for a loop: 1. Based on 500 people a researcher calculates the 95% confidence interval for the population proportion p: 0.123

87. ## math

a sprayer puts out 20 gallons of spray per acre the area is 2640 feet long by 1755 feet wide how many gallons would be sprayed on this area?

88. ## Math

Three seta of lights blink after 6 seconds, 8 seconds and 12 seconds respectively. What is the least number of seconds it would take for the lights to blink together.

89. ## english

what is the correct spelling with troublesome consonants,sheriff

90. ## biology

Why is it good for plants on the forest floor to have larger leaves but could be harmful to the trees above?

91. ## chemistry

a 2.55g sample of an unknown has a volume of 3.73 cm. what is the density of the unknown

92. ## chemical reaction engineering

Propane steam reforming over an alumina supported Ni metal catalyst: C3H8 (g) + H2O (g) → CO2 (g) + H2 (g) is proposed to follow these mechanisms: C3H8 + 2S1 ↔ C2H5-S1 + CH3-S1 (M1) H2O + 2S2 ↔ OH-S2 + H-S2 (M2) CH3-S1 + OH-S2 → CH3O-S1 + H-S2 (M3)

93. ## college biology

In testing synaptic transmission, you found that there were 300 failures in 1000 trails of stimulating a presynaptic neuron. The average EPSP size was .7 mV +/- .2mV (mean +/- SD), and the average 'mini' EPSP size was .6mV +/- .1mV. Does the synapse obey

94. ## History-Civil War

What was the most important technological or technical advance made during and for the Civil War ?

95. ## History-Civil War

What was the biggest challenge faced by the federal government at the end of the war in reintergrating the South into the United States of America ?

96. ## History-Civil War

To:Damon..His little bit of written info really helps me to complete my essays....New question...Was there an opportunity for the confederates to win during any day of Gettysburg? Identify & analyze the opportunity, and show how the South could have

97. ## social studies

What was the greatest obstacle that the Union army faced at Vicksburg, and how did they overcome it? I read so much on this ...were hills, surrounded by flooded marshlands & waters..army couldn't get through by foot..can't find a full explanation of this &

98. ## social studies

When was there a time through 1863 that the Confederates had a strong chance of winning the Civil War..?

99. ## social studies

Was there an opportunity for the confederates to win during any day of Gettysburgh ? How could the South have won ??