1. Algebra

How Does a Rodeo Star Get Around

2. chemistry

SOMEONE CAN PLZ EXPLAIN IN DETAIL HOW TO SOLVE THIS PROBLEM..THNKS Molar Volume of Sodium If you assume that an atom is a hard sphere, you can estimate the average volume of space it occupies using basic geometry. Question Estimate the volume, V , of a

3. Organic Chemistry

When benzyl chloride is treated with sodium iodide in acetone, it reacts much faster than 1-chlorobutane, even though both compounds are primary alkyl chlorides

4. chemistry

what experimental difficulty would you encounter if you had neglected to include a drying step before evaporating the ether solution of the neutral organic compound? Water was added to the organic solvent ,but a drying agent wasn't added. So would the

5. physics problem

An archer pulls the bowstring back for a distance of 0.400 m before releasing the arrow. The bow and string act like a spring whose spring constant is 490 N/m. (a) What is the elastic potential energy of the drawn bow? (b) The arrow has a mass of 0.0300

6. Math Word Problem

At 6am a few bacteria fall into a can of syrup in a broken garbage bag. The conditions of warmth, moisture, and food are perfect for growth and the population doubles every 20 minutes. By 6pm the bacteria are overcrowded and dry and their food is gone.At

7. chemistry

is this reaction endothermic or exothermic? Fe^3+ + SCN^- --> FeSCN^2+ (original: KSCN + Fe(NO3)3 --> Fe(SCN)3 + K(NO3))

8. Calculus

A dose, D, of a drug causes a temperature change, T, in apatient. For C a positive constant, t is given by T=((C/2)-(D/3))D^3. (a) What is the rate of change of temperature change with respect to dose. (b) For what dose does the temperature change increase

9. Hard Calculus

A dose, D, of a drug causes a temperature change, T, in apatient. For C a positive constant, t is given by T=((C/2)-(D/3))D^3. (a) What is the rate of change of temperature change with respect to dose. (b) For what dose does the temperature change increase

10. Physics

A 1300-kg space vehicle falls vertically from a height of 2500 km above the earth's surface. Determine how much work is done by the force of gravity in bringing the vehicle to the earth's surface.

11. calculus

A power station and a factory are on opposite sides of a river 50 feet wide. A power line must be run from the station to the factory. It costs 25 dollars per foot to run the cable in the river and \$15 per foot on land. Express the total cost as a function

12. chemistry

Is hydrogen bonding exothermic or endothermic? I am writing a lab report for the reaction between ethanol with water and glycerol with water and I don't know if the hydrogen bonds formed are exothermic or endothermic... PLEASE HELP!! thanks

13. PHYSICS PLZZZ

A block is given an initial velocity of 7.00 m/s up a frictionless 19.0° incline. How far up the incline does the block slide before coming (momentarily) to rest?

14. Math

A car rents for \$35 per day plus 20cents per mile. If x represents the number of miles jorge drives per day, 35+0.20x represents the cost of the rental. If jorge has \$89 to spend for the daily car rental, what is the maximum number of miles he can travel

15. chemistry

Atomic hydrogen produces well-known series of spectral lines in several regions of the electromagnetic spectrum. Each series fits the Rydberg equation with its own particular n sub 1 value. Calculate the value of n sub 1 (by trial and error if necessary)

16. Calculus

The gravitational force, F, on a rocket at a distance, r, from the center of the earth is given by F=k/r^2 where k = 10^13 newton • km2. When the rocket is 10^4 km from the center of the earth, it is moving away at 0.2 km/sec. How fast is the

17. geometry

1)given-AB=CD,CD=EF prove-AB-EF (in 5 steps that show why it is corect; i.e two-column proof) 2)Given-

A power station and a factory are on opposite sides of a river 50 feet wide. A power line must be run from the station to the factory. It costs 25 dollars per foot to run the cable in the river and \$15 per foot on land. Express the total cost as a function

19. Chemistry

Hi everyone, I'm having problems with effective nuclear charge. Regarding these problems. Calculate Zeff for a valence electron in an oxygen atom. and Calculate Zeff for the 4s electron in a copper atom, . and Calculate Zeff for a 3d electron in a copper

20. Primary Source

I am trying to find a primary source on Ferdinand Magellan. I understand that there are primary source book about him, but I need a primary source on the internet. I cannot seem to find one! Please help.

21. social studies

hi can someone please help me with these 3 questions. 1. One manifestation of the rising democratic tide in the 1830s was a. a general raising of the political tone b. use of national nominating conventions I think it's a but i don't know why it can't be B

22. physics

A car is traveling at 51.0 mi/h on a horizontal highway If the coefficient of static friction between road and tires on a rainy day is 0.096, what is the minimum distance in which the car will stop What is the stopping distance when the surface is dry and

23. AP Chem

Helium gas, He, at 22 degrees C and 1.00 atm occupied a vessel whose volume was 2.54 L. What volume would this gas occupy if it were cooled to liquid-nitrogen temperature (-197 degrees celcius). What is the equation?

24. Math word problem

The Mad River flows at a rate of 3 km/h. In order for a boat to travel 78.2 km upriver and then return in a total of 8 hr, how fast must the boat travel in still water? what formula would be used to solve this problem?

25. physics help 4

An astronaut on a small planet wishes to measure the local value of g by timing pulses traveling down a wire which has a large mass suspended from it. Assume that the wire has a mass of 4.10 g and a length of 1.60 m and that a 3.00 kg mass is suspended

26. geometry

TWO COLUMN TRIANGLE PROOF Given: line AB is parallel to line DE, and line AD bisects line BE Prove: triangle ABC is congruent to triangle DEC by using the ASA (angle-side-angle) postulate

27. physics

1) Sound propagating through air at 30 degree Celsius passes through a vertical cold front into air that is 40 degree Celsius. If the sound has a frequency of 2400 Hz, by what percentage does its wavelength change in crossing the boundary? (2) What is the

28. Trigonometry

Prove that (cosy/1+siny) + (1+siny/cosy) = 2secy

29. Math word problem check

The Mad River flows at a rate of 3 km/h. In order for a boat to travel 78.2 km upriver and then return in a total of 8 hr, how fast must the boat travel in still water? what formula would be used to solve this problem? I used the formula of V = D/T T =

30. grammar

change the following to indirect speech. the lion said to the hare, l am going to eat you'.

31. social studies

1. As a diplomat, andrew jackson was most successful in a. settling the maine boundary b. annexing texas c. opening trade with the british west indies d. purchasing florida i think it is d. 2. The textile factory spread into New England because of the

32. composition

I have to now for this unit write an essay about a literary essay's theme. I have chosen the poem The Wreck of the Hesperus so what is the theme of the poem? (theme can also be identified by the imagery, ect. of the poem) thanks-MC

33. math

How do you get the answer to this problem? The Diameter of a typical pinhead is 1 milimeter. If a common virus measures 250 nanometers in diameter, and the virus fits together so well that there are no gaps or overlaps, how many viruses would fit on the

34. dynamics

a boy weighs 80 lb and is hanging uniformly from a bar, how do you find the force in each of his arms at t=2s if the bar is moving upward with a.)constant velocity of 3ft/s, b.) a speed of (4t^2) ft/s?

35. English/Grammar

I need to re-write this sentence in a different light that would make it seem more correct. I am suppose to write it five different ways, I have written it in three other ways but I cannot come up with two more. The sentence is: Teen marketed films, try to

36. maths plz help me

TOP electronics is a small business with five employees. the mena (average) wekkly salary for the five employess is \$360. if the weekly salaries of four of he employees are \$340 \$340 \$345and \$425, what is the slary of the fifth employee?

37. chem

methanoic acid react with potassium dichromate to form what? A colorless solution and CO2 is formed as known

38. history

Hi can someone help me with this question By 1828 John C. Calhoun was a. an avowed secessionist b. an out and out sectionist c. a flaming nationalist d. both a sectionist and nationalist I think it is A

39. chem

A vessel containing 39.5 cm^3 of helium gas at 25 degrees celsius and 106 kPa was inverted and placed in cold ethanol. As the gas contracted, ethanol was forced into the vessel to maintain the same pressure of helium. If tihs required 7.7 cm^3 of ethanol,

40. chemistry

Molar Volume of Sodium If you assume that an atom is a hard sphere, you can estimate the average volume of space it occupies using basic geometry. Question Estimate the volume, V , of a sodium atom ( Na ) using its metallic radius of 186

41. Hard Calculus

The gravitational force, F, on a rocket at a distance, r, from the center of the earth is given by F=k/r^2 where k = 10^13 newton • km2. When the rocket is 10^4 km from the center of the earth, it is moving away at 0.2 km/sec. How fast is the

42. AP Environmental Science

I have a word problem about exponential growth. The problem is... "At 6am a few bacteria fall into a can of syrup in a broken garbage bag. The conditions of warmth, moisture, and food are perfect for growth and the population doubles every 20 minutes. By

two thirds minus five ninths equals?

44. Pre-Algebra

A rectange has dimensions of 1 and 6. Another rectangle was drawn from it using a scale factor of 1.5. A. The area of the large rectangle is how many times the area of the small rectangle? B. The perimter of the large rectangle is how many times the

45. Math word problem

The cost of producing x bags of pretzels is modelled by C(x)=0.5x^2 + x + 2 where x=# of bags per hundred. State the function that represents the average cost.

46. history

hi can someone please help me with these 5 questions. 1. One manifestation of the rising democratic tide in the 1830s was a. a general raising of the political tone b. use of national nominating conventions I think it's a but i don't know why it can't be B

A 4.0 Hz wave with an amplitude of 12 cm and a wavelength of 30.0 cm travels along a stretched horizontal string. (a) How far does a given peak on the wave travel in a time interval of 6.0 s? ? m (b) How far does a knot on the string travel in the same

48. math

what should you do if your lawn is always dry?

49. math help me

there are 2 identical bottles. one bottle contains 2 red balls. a bottle is selected at random and a single ball is drawn what is thwe probability that the bll is red?

50. math

A company published its list of employees and their salaries (rounded off) as givem below. Employee Salaries: President- \$120,000 Vice President- \$96,500 4 Managers- \$46,600 each 2 Secrataries- \$25,000 eacb 10 Senior Employees- \$36,500 each 15 Junior

51. government

one of the problem of liberty is that one person's liberty sometimes conflicts with another's liberty and one must take precedence. how to resolve the following conflicts between rights of the individuals and why? a. the majority of the members of the Key

52. Math (Functions)

he cost of producing x bags of pretzels is modelled by C(x)=0.5x^2 + x + 2 where x=# of bags per hundred. State the function that represents the average cost. Do you just have to factor it?

53. History

Who were the midnight judges in America during the 1800s? Also, can someone please explain the cause of Marbury vs. Madison and what the effect of Marbury vs. Madison was? Thank you.

54. Pre-Algebra

In a-c, explain what would happen to a figure if you transformed it using the given rule. a. (3x, 6y) b. (x+2, y+1) c. (2x, 2y +5)

55. history

hi can someone please help me with these questions 1. By 1828 John C. Calhoun was a. an avowed secessionist b. an out and out sectionist c. a flaming nationalist d. both a sectionist and a nationalist I think the answer is A 2. President Van buren is best

56. calc

a ball with mass 0.15 kg is thrown upward with initial velocity 20 m/sec from the roof of a building 30 m high. there is a force due to air resistance of |v|/30, where velocity v is measured in m/sec. a. find the maximum height above the ground the ball

57. statistics

model: firm return - risk free return = beta(market return - risk free return) hypothesis1: group1 & group2 have equal betas hypothesis2: group1 & group2 have equal variances if there are 500 observations (250 in group 1, 250 in group 2), what are the

58. social studies

Hi. Can somone please help me with these four questions. 1. President Van Buren is best remembered for a. causing a panic b. establishing the independent treasury system c. ending the bank of the united states d. annexing texas I think the answer is B 2.

59. Gr 10 Chemistry

What is the balanced skeleton equation of Calcium hydroxide+ Phosphoric acid --> Calcium phosphate+ Water

60. social studies

can someone help me please with these two questions. 1. The utopian communities in America before 1860 were handicapped because they a. were ultimately overcrowded b. were forced to compete with free enterprise c. outlawed by congress d. generally embraced

61. physics

what would make you weigh less inside of the empire state building on the ground floor, oppose to outside on the sidewalk. (weighing on a regular bathroom scale)The mass of the building? If so how does that work?

62. Trigonometry

Prove that (3cos^2x + 8sinx-8/cos^2x) = (3sinx-5/sinx+1)

1 3/9 x 2/3

64. biology honors

what was leonardo da vinci's contrabution to biology ?

Does the bending (folding and faulting) of Earth create sound?

66. Math

did i work these problems right if not could some one show me how to work all three of them. 8.Represent the quantity with a real number: An altitude of 400 feet (ft) above sea level: 400 is a real number. I could also use 4 as a real number representing a

67. history

can someone please help me 1. President Van buren is best remembered for a. causing a panic b. establishing the independent treasury system I think it is A but didn’t he not cause a panic

Between the Canadian Bill of Rights (1960) and the Canadian Charter of Rights & Freedoms, which is better able to protect the rights and freedoms of Canadian citizens and why? The answer is the Canadian Charter of Rights & Freedoms but I`m not sure why.

69. philosophy

write a 350-700 word response describing how Socrates’, Plato’s, and Aristotle’s philosophies relate to each other

70. english

name five things that can be called FROG. but it cant be a word describing a frog like toad or pollywog

71. S.S

What impact did the Virginia Statute for religious freedom have on the U.S government?

72. Math :)

I have to work with percentages and I don't know how to figure this word problem out. John saved 23.97\$ by purchasing boots at "30% off sale". Find the origianl price of the boots.

73. 7th math

Write all elements of Set R if Rn=n / 2 where n= 1,2,3.....9 What is the cardinality of Set R?

74. Math

Find the mode of the following list price- 1.67-1.29-.79-1.29-.89-.89-.79-1.67-.79-.57-.79 would my answer be .79

75. How does a pager work?

I understand that it's like a beeper. But do you pay per month or is it lke once you've bought one and a number for it, you don't have to pay anymore?

76. Math word problem 2

Sabine and Hercule can assemble a table in 45 minutes. Working alone, it takes Hercule 48 minutes longer than Sabine to put this table together. How long would it take for Sabine to assemble the table by herself? What formula would I use to solve this?

77. Math question

Solve: x^-2 - x^-1= 5/4 I multiplied all terms of your equation by 4x^2 to get 5x^2 + 4x - 4 = 0 I get (-2+/-2sqrt6)/5 is this correct?

78. Algebra

A chemist mixed some 20% peroxide sol with some 30% peroxide sol to make 500ml of a 25% peroxide solution.How many ml of each solution should be used? HELP just cannot get this one..

79. Science

When can a rock have both kinectic and potential energy? Explain.

Solve w= (va)/(r^2+a^2) for a. is the answer a= sqrt[w(r^2+v^2)/v]?

81. English I think

I was wondering if in the first production of Peter Pan (the play in 1904), if James Barrie (the author) REALLY invited handfuls of orphans to come to the play. This was in the movie, which is based on the true story, but I can't figure out if this

82. MGT

According to Rue and Byars (2004), “orientation is concerned with introducing the new employee to the organization and the job” (p. 177). On the other hand, “training involves the acquisition of skills, concepts, rules, or attitudes by employees in

83. social studies

Andrew Jackson believed that the US needed to a. create a totally egalitarian society b. challenge the power of the eastern elites c. put an end to the existence of slavery d, strengthen the power of the federal government. i remember reading that jackson

84. AP Economics

The price of apples rises from 1.00 per lb to 1.50 per lb. As a result the qauntity fdemande for oranges rises from 8000 to 9500 per week. Calculate the cross price elasticity for apples and oranges.

85. Math

Find the specific solution for the following differential equations: a) (dy/dx)^2 - x^4 = 0 given the initial value y(1) = 0 b) dy/dx = ysinx given the initial value y(pi) = 1

86. Math check

Complete the square: x^2 -12x. Which of the following is the correct perfect-square trinomial? the answers are: a.) x^2 +22x+121 b.) x^2 -10x+25 c.) x^2 -20x+44 d.) x^2 -12x+36 This is tough because the answers could be a.) b.) and d.) I am not sure which

87. history

describe the efforts between the 1850's and 1870 which resulted in the unification of italy. I have to get it from a book but i cant find any so if you could please give me the citation info to please.

wat is air??

89. pre-algebra

is a monomial an expresion that dose not use addition and subtraction

90. math

A company's bank inventory is confirmed by? Is this correct- a physical count

Determine the type of number that the solutions of x^2 +5x+3=0 will be I have the answer as rational is that right?

92. math

in a set of numbers {78, 79, 81, 82, 85} find a) mean b) median c) standard deviation is a) 81 b) 81 c) 2.74

93. the subject with numbers

Julie is paid a comission of 3% on all sales. Last week, she earned \$82.74. What were her total sales? How do you solve this math question? Please and Thank you!

94. English

How many different book genres are there and what are they?

95. history

hi can someone help me with this question 1. President Van Buren is best remembered for a. causing a panic b. establishing the independent treasury system c. ending the bank of the united states d. annexing texas I think it is A but can't it also be B

96. Math algebra equations

Joe spent \$5 on a shirt, \$20 on shoes, and he still had \$10 left. How much money did he start with ?

What are three important elements of culture?

98. Math help update

let f(x) = 12x^2 +7x-10. Find x such that f(x)=0 a.) -4/5, 5/3 b.) -5/4, 2/3 c.) -2/5, 5/3 d.) -5/3, 2/3 I think I have it. I was able to factor out 12x^2 +7x-10 to (4x+5) (3x-2)=0 The answer is -5/4 and 2/3 right?

99. government

This is a quote from an essay on “Liberty” by John Stuart Mills. “The peculiar evil of silencing the expression of opinion is that it is robbing the human race. If the opinion is rights, they are deprived of the opportunity for exchanging error for

100. science

What are the long term effects of tornadoes?

101. Math

Solve: x^-2 - x^-1= 5/4 I have the answer as (5+/- sqrt29)/2 Is this right?

102. Math

6 2/3 - 1 4/9 = ?

103. math

2 3/5 x 1 2/3

104. american government

if a teachers union wants its opinion to be heard in a case being considered by the supreme court on the issue of school prayer, but the union is not a formal party to the lwqsuit, it should file a/an writ of certiorari judicial pettion amicus curiae brief

105. Math Algebra check

Which of the following quadratic equations has -4 and 3/4 as the solutions? a.)x^2+(13/4x)-3 b.)x^2+(30/7x)-(25/7) c.)x^2+(30/7x)+(25/7) d.)x^2-(13/4x)+3 I substituted the values and I have the answer as (a.)

how do you decribe condinsation on a glass of a cold beverage on a warm day as?

107. algebra

How would i go about answereing this question? The mean temperature in new york one summer was 86 degrees. if the temperature on july 22 of that summer was 82.1 degrees, what was the deviation from the mean that day?

108. Math/Stats

In the last senatorial election in New Jersey, the republican candidate got 48% of the vote. During the election an exit poll was conducted by radio station WSTAT. Ten voters selected at random where asked if they voted for the republican candidate. (a)

109. math

Using Table 8.21, allocate the indirect costs in the indirect cost pool using total direct costs as the method or base. What is the total cost, or full cost, of each of the four programs? Assuming the total outputs (or units of service) remain the same for

110. math

the edges of a cube are 3 inches long. what is the surface area, in square inches, of this cube?

111. social studies

The following, except one, were reasons for the flood of immigrants in the 1840's: a. "American letters" b. a desire to retain the religion of their fathers c. speedy shipping d. the collapse of the Continental revolutions i'm pretty sure the answer is b.

112. CALC

find the following derivatives: f(x) = (2x+5)/(x^2-3) f'(x)= (2)*(x^2 -3)-(2x+5)*2x/(x^2-3)^2 is that correct??? f(x)= (lnx)(cos x) f'(x)= 1/x*-sinx or do i have to use the product rule?? thank you.

113. social studies

1. As a diplomat, andrew jackson was most successful in a. settling the maine boundary b. annexing texas c. opening trade with the british west indies d. purchasing florida i think it is c. 2. The textile factory spread into New England because of the

114. american revolution

which country does the tax collector represent?(1) why did sons of liberty ta and feather the taxcollector?(2) . these actions by the sons of liberty and other patriots helped lead towhich war?(3) thanks.

115. Algebra y-intercept

What is the y-intercept of f(x)=x^2+x-12? the answers are a.)(0,12) b.)(-72,0) c.)(0,-12) d.)(0,-72) I have the answer as (c.)(0,-12) is this right?

116. american experience since 1945

Describe how the Cold War ideology that crystallized after WWll changed wartime alliances that had existed during the war?

117. college chemistry

If I find the energy emitted by an excited sodium atom when it generates a photon.and then, When i have to find the energy emitted by 1mol of excited sodium atoms at this wvelength do I multiply the first by avogadro's number? 1mol has avogadro number of

119. word problem 3

Rosie's Palm Pirates, a manufacturer of electronic organizers, estimates that when x hundred Palm Pirates are made, the average cost per unit is given by C(x) = 0.4x^2 -3.68x+9.524, where C is in hundreds of dollars. What is the minimum cost per unit? is

The speed of a deep water wave with a wavelength ë is given approximately by v = (gë/2ð)1/2. Find the speed and frequency of a deep water wave with a wavelength of 5.5 m. ? m/s ? Hz can someone get me started with a formula? I lost my book :(

121. Phyiscs help 3

The height of a tower is measured by attaching a simple pendulum to its ceiling, whose length is barely enough to stay off the floor. The pendulum is let go from a small angle, and takes 13 s to return to the same location it started from. a.) How tall is

122. history

describe the efforts between the 1850's and 1870 which resulted in the unification of italy

123. Math question

Solve: x^2 +4x+1=0 Is the answer 2+-sqrt2?

124. ethnics

here is the assingment i do not know if he wants me to answer all of those for the four groups what dose it sound like to you guys and can you help. Assignment: Hispanic American Diversity • Resources: Racial and Ethnic Groups, the University Library,

Consider what this rule might mean to businesses, particularly those that contract with the government. Consider, for example, a store or outlet that purchases federal/military surplus. What provisions might they need to include in a contract that might

126. environmental studies

i want information on wild flowers

127. Finance (common stock)

I need a formula for: A share of common stock of xyz ltd is expected to pay no dividends until next 2 years but at the end of year 2 it will pay \$2 as dividends. Dividends are expected to grow at 4% per annum into indefinite future. Assume that the

128. math

the diameter of a cylinder is one half the height. Express the total surface area as a function of the height h. Can someone please help me with this question

129. Math help 2

Solve: x^2 +8x

130. Finance (common stock)

I need a formula for: A share of common stock of xyz ltd is expected to pay no dividends until next 2 years but at the end of year 2 it will pay \$2 as dividends. Dividends are expected to grow at 20% per annum in yrs 3 and 4 and thereafter they are

131. Math

Find the mode of the following list price: 1.67,1.29,0.79,1.29,0.89,0.89,0.79,1.67,0.79,0.57, and 0.79 Can someone show mw how to do this please?

132. life science

how do I create a concept map using the following: animal call, glucose, oxygen, carbon dioxide, atp, mitochondria, and cellular respiration?

133. english

Change the sentence to indirect speech. The lion said to the hair,'I am going to eat you.'

134. government

Today "freedom of speech" is limited in interest of public safety by the clear and present danger test. do you feel this is a good standard?

135. social studies

what are three basic values of american democracy

136. government

does anyone know any website that I can find about Government law to answer the following question? [c] Comrade Nikolai, a communist, wishes to hold a Saturday rally in LeBard Stadium at Orange Coast College, but several Costa Mesa citizens object. [d]

137. Math help

Which of the following quadratic equations has -4 and 3/4 as the solutions? a.)x^2+(13/4x)-3 b.)x^2+(30/7x)-(25/7) c.)x^2+(30/7x)+(25/7) d.)x^2-(13/4x)+3 I substituted the values and I have the answer as (a.)

138. Social Studies

Could someone tell me whether these answers are correct? Every culture has a __________ or a way of oganizing people Social Structure? In the past it was hard to move from one __________ to another. Social Class? The size of a _________ can differ from

139. Books

I want to read a classic that will inspire me to think outside of the box, what should i read. I am a freshman in High School.

What are some things that are in the Canadian Charter of Rights and Freedoms but is not in the Canadian Bill of Rights?

141. social studies

I am looking for enthic symbols for my German heritage. Can't seem to find any on the web. I am in the seventh grade

142. History- The Constitution

How does the elastic clause keep the Constitution "alive"? Give two examples of checks and balances.

143. pre-algerbra

write an algebraic expression for each of the quantities being comared. The attndance on tuesday was 350 more than double the attendance on monday

144. math

What are the first few steps to solving this system by the substitution method? xy=3 x^2+y^2=10

explain the usefulness of algebra in modern mathematics.

how do you describe what takes place when condensation forms on a cold beverage on a warm day? ( maybe this question is more clear)

147. chemistry

is it possible for the reaction between two aqueous solutions to be neither endothermic or exothermic?

148. english- vocabulary

Fill in the blanks with homonyms: Can you ___ a good authority to prove that the ____ of this ancient city was discovered by an American? The ___ reason why I believe corey worthy of so important an office is that she is a woman of _____. Since you are

149. Science

I have my carbon NMR spectra and my product should not have any N in it but there are peaks for N-H secondary amines...the only nitrogen used was in the catalyst...this should not show up on the spectra, right? If it should not have how would I explain the

150. english

I am having a hard time coming up with a topic for an essay. The theme is 'A Day in the Life of ___' It has to be read aloud, so I am trying to think of something fun and am drawing a blank. Any ideas out there?

151. english

would "the gloom and terror in the depth of the poor minister's eyes" be an example of personification

152. Math Algebra help

Solve w= (va)/(r^2+a^2) for a. is the answer a= sqrt[w(r^2+v^2)/v]?

153. Algebra

Find a quadratic equation with integer coefficients whose roots are 2 and7.

154. algebra

so would i do this: 82.1 - 86 = -3.9 now that i have the -3.9 would that be the final answer to the question "what is the deviation from the mean that day?"

-8a+6(a+7)=1

156. calculus

find the following derivatives: f(x) = (2x+5)/(x^2-3) f'(x)= (2)*(x^2 -3)-(2x+5)*2x/(x^2-3)^2 is that correct??? f(x)= (lnx)(cos x) f'(x)= 1/x*-sinx or do i have to use the product rule?? thank you.

-8a+6(a+7)=1

158. Math help

What is the y-intercept of f(x)=x^2+x-12? the answers are a.)(0,12) b.)(-72,0) c.)(0,-12) d.)(0,-72) I have the answer as (c.)(0,-12) is this right?

159. pre-algebra

what is a factor

160. pigskin geography

i need ALL the answers to pigskin for the games played on November 9, 2008 i don't know what week that is though. PLEASE HELP ME! i cant fail this class.

161. writing an essay

describe the visible and invisible obstacles that obama has overcome?

162. Biology

Are organisms critical to the completion of the water cycle? Why or why not?

163. writing a paragraph

describe the obstacles that obama have to overcome in the future?

164. statistics health care

Why are measures of central tendency essential to descriptive statistics?

165. Algebra

Solve: x^2 +4x+1=0 Is the answer 2+-sqrt2?

166. science

your drink is a mixture.write down the names of any other mixtures that you drink.

167. AED 203

what is an interdisciplinary learning center?

168. french

in french, do they use the inversion form of questions a lot? comme "I miss you" est "Tu me manques" ne pas "Je te manques"?

169. english

what can be the possible correct write up if you would feature the place where you haven't been?

170. Math help

Solve: x+5=x^2 I have (1+- sqrt 21)/2 Is that right or did I calculate something wrong?

171. Science

What Acids Or Alkalis Do You Find Round The House ?

172. Communications

Hi there, I am doing a project on Cadbury Chocolate and how to uses (external communication) could you give me ideas of what i should talk about? Or any useful websites or videos? Thanks.

173. Math help

Solve: x^2 +5x=1. Use a calculator to approxiamte the solutions with rational numbers. is the answer -0.1925824, 5.65331193 ?

174. math

can someone help me with this question. I am completely stuck. A box with a quare base and top has a volume of 20 meters cubed. The material for the base costs \$7.00 per sq. meter, the material for the sides costs \$4.00 per sq. meter, and the material for

175. Math

The method used to calulate depreciation for federal tax purposes is the ? Is it the declining balance method

176. Math

If the cost of a retailer's merchandise are rising, is this a trues statment? Using FIFO will lower taxes

177. pre-algebra

what is a prime factoization

178. pre-algebra

the gcf of : 40ccd,42c

179. Algebra help

Solve: x^-2 - x^-1= 5/4 I have the answer as (5+/- sqrt29)/2 Is this right?

180. pre-algebra

factor expresions: 2+16y and 4-16m

181. Science

I need a recipe to make a mesopotaimian brick

182. pre-algebra

how do u factor an expresion

183. Chemistry

I'm having a difficult time understanding phosphorous-containing ions. For example, phospate is written as PO4 with 3- on top. I don't know what the 4 or 3- stand for. Please explain? Also if you could help me find out the symbols for phophite and hydrogen

184. Model UN (Global)

For the OIC council in Model UN, my third topic is Insurgency in South Thailand. I need to find out how Albania feels on this topic and can't find any sites or articles. Thanks

185. accounting

For each of the following items give an example of a business transaction that has the described effect on the accounting equation: increase an asset and increase a liability increase one asset and decrease another asset decrease an asset and decrease

186. Math Check

Solve: x^-2 - x^-1= 5/4 I have the answer as (5+/- sqrt29)/2 Is this right?

187. chem

What is the relationship between kPa and atm when dealing with measurements of pressure of a gas?

188. health care

How does gender and culture differences impact a patients care in home health care?

189. Math help 2

let f(x) = 12x^2 +7x-10. Find x such that f(x)=0 a.) -4/5, 5/3 b.) -5/4, 2/3 c.) -2/5, 5/3 d.) -5/3, 2/3

190. math

How would i go about answereing this question? The mean temperature in new york one summer was 86 degrees. if the temperature on july 22 of that summer was 82.1 degrees, what was the deviation from the mean that day?