# Questions Asked onMarch 24, 2010

1. ## Science

Radioactive carbon-14 dating has determined that a fossil is 5.7 x 10 to the third power years old. What is the total amount of the original Carbon-14 still present in the fossil?

2. ## pH

Determine the pH of each of the following solutions. 0.21 M KCHO2 0.19 M CH3NH3I 0.19 M KI I'm not sure how i should set up the ice chart, and what Ka I should be using for the solutions

3. ## Penn Foster Writing Assignment Writing Skills

I am trying to complete a 750 to 1000 word essay but I completely have no clue what to write about and my writing skills is a bit lacking. I am not looking for someone to write this for me, someone who can guide me to complete this. This is the final paper

4. ## Physics

A hollow plastic spherical bobber of mass 0.005 kg and volume of 50 cm3 floats on the surface of a lake supporting a submersed fishhook and a bait with a combined mass of 0.01 kg and a combined volume of 2 cm3. The density of water is 0.001 kg/cm3. If a

5. ## Fractions

There are 16 tulips in the garden 1/4 of the tulips are red. How many tulips are red?

6. ## math

An arch is in the form of a semi-ellipse, with its major axis as the span. If the span is 80 feet and the height is 30 feet write the standard equation.

7. ## statistics

in a test for esp a subject is told that cards the experimenter can see but he cannot contain either a star, a circle, a wave, or a square. as the experimenter looks at each of 20 cards in turn, the subject names the shape on the card. a subject who is

8. ## Math

One grocery clerk can stock a shelf in 40 min, whereas a second clerk requires 20 min to stock the same shelf. How long would it take to stock the shelf if the two clerks worked together? Is this how you do this: t/40 + t/24 =1 t*3/40*3 + t*5/24*5 =1

9. ## physics

A high jumper of mass 80.0 kg consumes a meal of 4.00 103 kcal prior to a jump. If 3.3% of the energy from the food could be converted to gravitational potential energy in a single jump, how high could the athlete jump?

10. ## physics

A source of e.m.f 110v and frequency 60hz is connected to a resistor, an indicator and a capacitor in series. When the current in the capacitor is 2A.the potential difference across the resistor is 80v and that across the inductor is 40v.calculate the

11. ## Math

If the average person drikns 8 ounces glasses of water per day, a person who drinks 12.8 ounces of water after a morning exercise session has consumed what fraction of the daily average?

12. ## AP Biology

Describe the production and processing of a protein that will be exported from a eukaryotic cell. Begin with the separation of the messenger RNA from the DNA template and end with the release of the protein at the plasma membrane. -in essay format not

13. ## physics

Two small identical metal spheres, A and B, on insulated stands, are each given a charge of +2.4 10-6 coulomb. The distance between the spheres is 7 10-1 meter. Calculate the magnitude of the electrostatic force that the charge on sphere A exerts on the

14. ## Calculus

Determine the concavity and find the points of inflection. y=2cosx + sin2x 0≤x≤2pi y'=-2sinx + 2cos2x y"=-2cosx-4sinx How do I find the IP(s)?

15. ## math 116

How do you know if a value is a solution for an inequality? How is this different from determining if a value is a solution to an equation? If you replace the equal sign of an equation and put an inequality sign in its place, is there ever a time when the

16. ## 6 th grade math

2 students are learning how to bake apple and blueberry pies. The first student makes an apple pie and the second student bakes a blueberry pie. If the first student eats 1/4 of the apple pie and the second student eats 1/2 of the blueberry pie, which

17. ## Socials Studies (URGENT)

Why would the Metis have so many rules regarding the Buffalo Hunt? Thank you.

18. ## math

A cyclist and a jogger start from a town at the same time and headed for a destination 24 mi away. The rate of the cyclist is twice the rate of the jogger. The cyclist arrives 3hrs ahead of the jogger. Whats the rate of the cyclist?

19. ## MANAGEMENT ACCOUNTING

COSTS CAN BE CLASSIFIED INTO TWO CATEGORIES FIXED AND VARIABLE COSTS THESE COST BEHAVE DIFFERENTLY BASED ON THE LEVEL OF VOLUME SUPPOSE WE ARE RUNNING A RESTAURANT AND HAVE IDENTIFIED CERTAIN COST ALONG WITH THE NUMBER OF ANNUAL UNIT SOLD OF 1000 TOTAL

20. ## Math

find each quotient, using long division (5x^4+14x^3+9x) / (x^2+3x+1)

21. ## math

There are 8 ounces in a 1/2 pound. How many ounces are in 7 3/4 pounds.

22. ## Physics

A non-rotating spherical planet with no atmosphere has a mass M and radius R. A particle is fired off from the surface with a speed equal to 3/4 the escape speed. Calculate the farthest distance it reaches (measured from the center of the planet) if it is

23. ## Chemistry

How many moles of Cacl are needed to be dissolved in .500g of H2O to form a 1.5m solution?

24. ## Chemistry --Need Help!!

Ive posted twice, but no one's answered yet...I could really use any kind of guidance--particularly for the 1st question :) 1)) The following two half-cells are paired up in a voltaic cell. How will lowering the pH affect the ƒ´E of the overall cell?

Final Exam ACC440 Problem 1 On January 1, 20X1, Popular Creek Corporation organized RoadTime Company as a subsidiary in Switzerland with an initial investment cost of Swiss francs (SFr) 60,000. RoadTime’s December 31, 20X1, trial balance in SFr is as

26. ## Probability

A popular game show begins with the host reading a question to the contestants. One question involves putting four events (A, B, C and D) in chronological order. What is the probability that the contestant gets the question correct if he or she just

27. ## Physics

The temperature in an electric oven is 160°C. The temperature at the outer surface in the kitchen is 50°C. The oven ( surface area = 1.6 m2) is insulated with material that has a thickness of 0.02 m and a thermal conductivity of 0.045 J/s.m.C°. (a) How

28. ## Chem

Which direction will the following reaction in a 5.0 L flask proceed if Qp = 0.013? 2H2O(g) = 2H2(g) + O2(g) Kp = 1.6 x 10-5 Choose one answer. a. to the right because Q > Kp b. to the left because Q > Kp c. to the right because Q < Kp d. to the left

29. ## chemistry

Determine Kc at 298 K for the reaction 2 CH4(g) reverse reaction arrow C2H2(g) + 3 H2(g), given the following data at 298 K. (Hint: How are Kc and Kp for the reaction related?) CH4(g) + H2O(g) reverse reaction arrow CO(g) + 3 H2(g) Kp = 1.2 multiplied by

31. ## math

how do i use the shell method to find the volumes of the solids generated by revolving the regions bounded by the curves and lines a) y=1/x, y=0, x=1/2, x=2 So I think the integral is 2pi(radius)(height) dx from 0.5 to 2 but I'm not sure what the radius

32. ## Biology

34. The heart is divided into two major sections with two chambers in each section. Tell an easy way to remember which section carries oxygenated blood and deoxygenated blood, the chamber the blood enters first, and the second chamber the blood exits from.

33. ## Chemistry

Kp=1.78 at 250 degrees for the decomposition reaction, PCl5(g)->PCl3(g)+Cl2(g. Calculate the percentage of reactant that remains if 10.0 moles of starting material are placed in a closed vessel at this temperature and 2.00 atm pressure. Also, determine the

34. ## standard deviation

the mean is 3.5. dtandard deviation is .5. sally's score is 1.5 on test. how many standard deviations is she from the mean? billy scores 5. what is his standard score? what scale of measurement is being used? is it appropriate? why/why not?

35. ## algebra

Jeffrey is building a rectangular flower garden, width is "w" and length is w + 3. Write a a mathematical expression for the length and an algebraic expression for the area of the garden in binomial descending order.

36. ## algebra

The sides of an rectangle was 5cm by 9cm. When both dimension were increased by an equal amounts the area of the rectangle increased by 120 cm^2 find the dimensions of the new rectangle.

37. ## home work

what's a sentence for hasten

38. ## COMPUTER

In what ways would you differentiate a micro computer from electronic organizer

39. ## Physical Science

two people pull on separate ropes attached to a cart. the angle between the ropes is 90 degrees and one person pulls with a force of 200 newtons while the other pulls with a fore of 400 newtons. find the resultant force and direction using the

40. ## geometry

What is the distance between the origin and the point (5, -19)? If necessary, round your answer to two decimal places.

41. ## language expression

choose the sentence that is complete and that is written correct. 11) A)annabel are planning to walk at least seven miles every week B)i am walking on the sidewalk when i have heard someone say my name. C)as soon as we see brent walking around the conor,we

43. ## algebra

Could you explain how to factor completely -a^3n+1 + 2b^2n+b - ab - (2a^3n*b^2n)

44. ## Science-PsyDAG

We did a experiment to recognize chemical change and here it is: I'm listing what we did, step by step. 1. Put on your safety goggles. In one row of your spot plate, add five drops of the sodium hydroxide solution to each of four deprssions. Then add two

45. ## math

what two steps do u follow to tell if a table is a direct variation/proportion?

46. ## Math

How do I find the dimensions of a piece of wrapping paper used to wrap the box? The dimensions are 15in, 9in, 4in. The SA equals 270. I don't know to make it into an answer like 40 in. BY 10in

47. ## Chemistry

Hydrolysis of Salt: Using the universal indicator we had to determine the pH of sodium acetate, and the results i got was pH- 8.5 . Now i have to explain this with a equation to show hydrolysis. I don't know how to write it out but, Sodium is not

48. ## social studies

what are detors called when they work to pay off there det?

49. ## social studies

Which of these tribes were Germanic Tribes? Huns, Goths, Lombards, Vikings, Franks, Vandals,

50. ## try this

i have to write a three sentences about my family, using irregular verbs and i do not know what to write or what irregular verbs are

51. ## physics

Find (a) the potential and (b) the field strength at points A and B due to two small spheres X and Y 1.0m apart in air and carrying charges of +2.0x10^-8C and -2.0x10^-8C respectively.

52. ## Math

Translate to an algebraic expression The product of 46% and some number. use D for some number and change the percentage to a decimal. Here is what I think it is .46D is that correct?

53. ## geometry

What is the area of a...... parallelogram. with a triangle. with a base of 19ft. and the triangle being a 30-60-90. with a hypotenose of 16ft

54. ## language expression

choose the sentence that is complete and that is written correct. 11) A)annabel are planning to walk at least seven miles every week B)i am walking on the sidewalk when i have heard someone say my name. C)as soon as we see brent walking around the conor,we

55. ## math

(x+3)(x+4)(x+5) just need help with the steps to solve it

56. ## Essay

I need a thesis statement on healthful eating. My topic is broken down to good health, exercise, balancing act and organics.

57. ## Biology

34. The heart is divided into two major sections with two chambers in each section. Tell an easy way to remember which section carries oxygenated blood and deoxygenated blood, the chamber the blood enters first, and the second chamber the blood exits from.

58. ## Geometry again

What is the area of a square and 45-45-90 triangle. With a top base of 9yd. and a bottom base of 18yd. and a height of 7yd. ????

How can you use 16 divide by 4 = 4 to help you find 160 divide by 4?

60. ## algebra

I am lost on solving this problem 3x+8=8x-5x+10 I know the next step is 3x+8=3x+10 I am lost after that

61. ## math

a 10-liter sample of one type of crude oil has a mass of 8.20kg. What i the density? If this oil spilled on the ocean's surface, would it sink or float? explain answer in terms of density.

63. ## language arts

What is a high shrill sound ending with wh

How can you use 16 divide by 4 = 4 to help you find 160 divide by 4?

65. ## chemistry

How much heat is evolved when 267 g of ammonia gas condenses to a liquid at its boiling point?

66. ## chemistry

A 4.90 g nugget of pure gold absorbed 255 J of heat. What was the final temperature of the gold if the initial temperature was 24.0°C? The specific heat of gold is 0.129 J/(g·°C).

67. ## math

Curtis found a rule for a table. The rule he made is y=7x. What does the rule tell you about every y value?

68. ## chemistry

If 311 g water at 65.5°C loses 9760 J of heat, what is the final temperature of the water?

69. ## Chemistry

Part A: Unknown Acid use 1gram and mix with 120 mL of distilled water Determine the concentration of the acid by titrating with 0.0998 M of NaOH Concentration of NaOH= 0.0998M Volume of NaOH= 3.5 mL # moles of NaOH= Initial Concentration of Weak Acid- Show

70. ## neighborhood know how!

all neigh have rights.with these rights come responsibilities.draw a picture of a responsible neighbor.

71. ## Math

(3ã2 + 4)^2 (3ã2 + 4)(3ã2 + 4) 9ã4 + 12ã2 + 12ã2 + 16 9*2ã2 + 12ã2 + 12ã2 + 16 18ã2 + 12ã2 + 12ã2 + 16 = 42ã2 + 16

72. ## Chemistry

If PbF2 is poured into a solution of 0.012 molar F-, how much will dissolve at equilibrium?

73. ## social studies

6th grade question:what were greek city-states and how did they function

74. ## Chemistry

What is the pH of a 0.0054 molal solution of C2H2O4. First ionization constant K1= 6.5 x 10-2, second K2= 6.1 x 10-5.

75. ## Science

Which is not a physical property? a)state b)density c)ductility d)flammability I think it's d. Which one of these processes are chemically created? a)erosion of riverbank b)flow of molten lava c)heaving of rock by ice formation d)formation of limestone

76. ## Math

How do I find the dimensions of a piece of wrapping paper used to wrap the box? The dimensions are 15in, 9in, 4in. The Surface area equals 462. I don't know to make it into an answer like 40 in. BY 10in

77. ## social studies

How did Buddism has try to change the lifes of people in india

78. ## polilawgovt

There were a few items on my mind as I wonder if there is any way to find these out. Is there any way to search through a broad range of specific legislative pieces i.e. conduct a survey of hot button public policies? On another note, is there way to

79. ## English

Combine these sentences using techniques of parallelism. Writers who specialize in humor bankroll a student humor writer at the University of Southern California in Los Angeles. A horse-racing association sponsers a student sports writer. The Student must

Why did the cow want a divorce? Having trouble with this page (158)

81. ## algebra

I=PRT Solve for R

82. ## Chemistry

If a silver wire is placed in a beaker containing 1 M Cu(NO3)2, what will happen? I don't think anything will happen, but what is the right way to explain this is chemical terms?

83. ## Science

I need help filling this blank. The difference between a "cool" solid and a "hot" solid is that the particles vibrate __________ in the cool solid. Would "freely" fit the blank? The difference between a solid and a liquid at the same temperature is that

84. ## economic

3. Consumer spending on durables falls, draw a graph to analyze the effects of this change in real interset. 4. The Canadian demand for Mexican Pesos is downward sloping and supply of pesos is upward sloping. Assume a system of flexible exchange rate

85. ## science

What is acid deposition?

86. ## English

Combine this sentence using techniques of parallelism. 3. The Rochester Institute of Technology in New York State chose 150 students born on June 12 1979. Each one received a grant of \$1,500 per year. These awards were given to select students to honor the

87. ## Math

What is the mass of a half dollar in kilograms?

Meg's dog Angel eats 4 1/4 c of food each day. Explain how Meg can determine how much food to give Angel if she needs to feed him only 2/3 as much. Need help solving.

89. ## calculus-limits??

i keep on doing something wrong on this problem,i guess im forgetting to add or subtract some number. use f'(x)=lim h-->0 f(x+h)-f(x)/h to find the limit: lim h-->0 sin^(3)4(x+h)-sin^(3)4x/h

90. ## Calculus

Find an equation of the tangent line to the given curve at the given point y=(1/cosx)-2cosx at((pi/3),1) y'=0+2sinx slope = √3 y=mx+b 1=(√3)(pi/3)+b b=(3-√3pi)/3 3√3x-3y+3-√3pi=0 What did I do wrong? Thanks in advance.

91. ## math

derivatives: y=(x^3+1)^2, then dy/dx is: i got 6x^2(x^3+1) first but im not sure. Can i see the steps of how it is done right. I also got 2(3x^2+1), which one is right?? sorry for bugging.Thanks

92. ## english

summarize into a paragraph. Establishing bilingual education programs was a reaction to these problems. It was an attempt to bring education to students who had special needs. Bilingual education tries to meet students at their level rather than the level

93. ## Math-Derivatives.

if y=sec^(3)2x, then dy/dx= my answer is 6 sec^3 2xtan 2x but im not sure if that is right. ? Can someone show me if i did it correct.

94. ## Economic

1. keogh and IRA plans allow people to do all of the following except: A. save money each year for retirement B. withdraw money from their accounts at the end of every year without penalty C. establish their own pension plans D. defer taxation of the

95. ## Geometry

I know this probably is really easy, but I simply cannot figure it out for myself. Thank you for your help in advance. On a cube, the face diagonals AB and BC meet at vertex B. What is the degree measure of angle ABC?

96. ## English

1. After watching Ghost I like watching horror movies. I saw the movie Ghost with my father. It was scary but great. I expecially liked the scene where the main character got rid of the fierce ghost with his magic stick. 2. After watching Gone with the

97. ## calculus

A tissue culture grows until it has an area of 9 cm^2. A(t) is the area of the tissue at time t. One model for the growth rate is A'(t)=k*sqrt(A(t))*(9-A(t)) for some constant k. The number of cells on the edge is proportional to sqrt(A(t)) and most of the

how do i turn 21/50 to a equivalant decimal

99. ## English

1. I think watching TV is bad because we can become violent. 2. I think watching TV is bad because we can imitate bad behaviors in bad programs. 3. I think watching TV is bad because we can not spend much time in studying. 4. I think watching TV is bad

100. ## Biology

34. The heart is divided into two major sections with two chambers in each section. Tell an easy way to remember which section carries oxygenated blood and deoxygenated blood, the chamber the blood enters first, and the second chamber the blood exits from.

101. ## English

Combine the sentence using techniques of parallelism. In return for their scholarships, Wooster's bagpipers must pipe for the school's football team. The terms of the scholarships also require the drummers to drum for the team. The dancers have to cheer

102. ## English

1. What do you thinks about watching TV? 2. What is your opinion of watching TV? 3. Do you think watching TV is good or not? 4. What is your viewpoint of watching TV? 5. What kind of viewpoint do you have about watching TV? 6. What viewpoint do you have

103. ## ALGEBRA

Use rational exponents to write 4√6 * 3√7 as a singular expression. How in the world do I write this??

104. ## ALGEBRA

Multiply & simplify Assume that all expressions under the radicals represent non negative numbers... √5x^7 √35x

105. ## Calculus (optimization problem)

A cyclinderical tank with no top is to be built from stainless steel with a copper bottom. The tank is to have a volume of 5ð m^3. if the price of copper is five times the price of stainless steel, what should be the dimensions of the tank so that the

106. ## ALGEBRA

how do I multiply (6 + √2) (6 - √2)

107. ## English

1. He painted the emperor a gold tree. 2. He painted a gold tree for the emperor. 3. He painted a gold tree to the emperor. (Are they all grammatical? Which preposition do we have to use?) 4. Ma Liang kept painting. (Ma Liang is a person's name. What is

108. ## English

* The bird came alive and flew away. (What is the part of speech of 'alive'? Is it a subjective complement? 'Came' is a complete intransitive verb, right? Can a complete intransitive complement take a complement?)

109. ## math 116

How do you know if a value is a solution for an inequality? How is this different from determining if a value is a solution to an equation? If you replace the equal sign of an equation and put an inequality sign in its place, is there ever a time when the

110. ## ALGEBRA

Rewrite this as an rational exponent: (√7mn)^7

111. ## Biology and Graphing (Stats)

i need to make a graph on excel.. my data involve putting goldfish (from the same tank and same type) into 3 different environments : acidic, neutral (control), and basic. What kind of graph should I use? just a line graph? but then what should my

112. ## ALGEBRA

simplify by taking roots of the numerator & denominator √64/y^2

113. ## Physics- due tomorrow

Two wires have current both running in the positive x direction as shown in the diagram with I1 = 13.9 amps and I2 = 4.5 amps. They are separated by a distance of d = 4.7 meters. A third wire with I3 = 10 amps is placed somewhere between the two wires with

114. ## Global History

reasons/causes why there was a fight for the holy land christians vs muslims.

115. ## Physics

An image formed by a convex mirror ( f= 24 cm) has a magnification of 0.15. Which way and by how much should the object be moved to double the size of the image?

116. ## ALGEBRA

add then simplify.by collecting like radical terms if possible assuming that all expressions under radicals represent non negative numbers: √5a + 2√45a^3

117. ## science

Trace the impulse, listing the steps in as much detail as possible, from which your brain sends the message to the appropriate muscles to lift a glass of water to drink. As in the previous Application Assignment (parts one and two), detail the steps

118. ## Chemistry

What is the molality if 82grams of CaNO4 is dissolved in 2000grams of Water?

119. ## BEH 225

data on the pathological liars and their spouses.

120. ## ALGEBRA

how can i use the law of exponents to simplify: (6 ^5/8)^2/9 5/8 fraction 2/9 fraction

121. ## sociolinguistic

What is the languages used in indonesia? and what is the history of it?

122. ## chem for Dr. Bob

In the reaction 2 H2(g) + S2(g) reverse reaction arrow 2 H2S(g), Kc = 6.28 multiplied by 103 at 900 K. What is the equilibrium value of [H2] if at equilibrium [H2S] = [S2]1/2?

123. ## college

solve each equation 1/5y2-2=-3y

124. ## math

how do i turn 0.83 to a fraction?

125. ## math

∛(270x )-∛(10x^4) subtract by simplifying by collecting like terms

126. ## College Physics

A 0.145 kg baseball is moving at a speed of 15.0 meter/sec east toward the bat. The bat has 3.00x10^-3 seconds contact with the ball. As a result the ball flies back at 25.0 meter/sec west. What was the force (vector!) the bat exerted on the ball?

127. ## science

Amount of energy flowing through an area, influcences how far away a sound can be heard

128. ## distance problems

two planes left Seattle at the same time, both traveling due east. One had the rate of 185 mi/h and the other had a rate of 225 mi/hr. After how many hours were they 220 miles apart?

129. ## College Physics

A 315 kg object is lifted 12 meters by a motor in 15 seconds. How much power does the motor deliver?

130. ## algebra

simplify and write with only positive exponents 1. x to yhe negitive six power times x to the fifth power 2. y to the negitive twelth power divided by 7y to the fifth power

131. ## Math distance rate 8th grade test tmr!

Two planes left Seattle at the same time, both traveling due east. One had the rate of 185 mi/h and the other had a rate of 225 mi/hr. After how many hours were they 220 miles apart?

132. ## Calculus

(x^3+1)^2 then dy/dx i got 6x^2(x^3+1), not sure if it is correct.

133. ## Math

Solve the system of equations y=3x x^2-y=28

134. ## economics-oligopoly

Suppose there are only two producers, A and B, in a market producing the same good with the same total cost function TC=0.05 Q^2 +100. The market demand is given by Q=1000-5P. a) Find the equilibrium price and total output in the Bertrand model. b) Find

135. ## English

I am assigned to write a formal essay focusing on the theme of "Mrs Turner Cutting the Grass". Are job is to support our argument with any of the following: plot structure, symbolism, irony, humour, pathos, style or foreshadowing. How do I go about this?

136. ## Biology

Hi there, I am doing a genetic debate on the topic "Xenotransplantation should receive all the funding that stem cell reasearch now receives." I am against this idea and I must take on the role of a patient who has contracted a disease after an

137. ## math

what is the answer to this riddle. what should you say when u meet an angel

138. ## science

The population of Singapore is 4987600 people. The territory of Singapore is 710.2 km^s. The population of Namibia is 2171000 people, while its territory is 824292 km^2. Estimate the population densities of Singapore and Namibia.

139. ## Chemistry

What is the density of hydrogen gas at 25 degrees celius and 1 Atm?

140. ## analytical chemistry

When a monoprotic weak acid is titrated with a strong base, the titration curve contains these many inflection points: a.zero b.one c.two d.three Can you also explain why you choose your answer to this question...thanks

141. ## Math

y=-3x^2+6x-2 Sketch the graph of the given porabola and state the coordinance of its intercepts. I can graph it if I can get some help with the vertex and coordinance. This is what I got; vertex:(1,1) x-intercept:(-1.6,.-4), and y-intercept:(0,-2). Is this

142. ## Geometry

How would you solve these? The radius of a circle is 34 meters long, and a chord of the circle is 60 meters long. How far is the chord from the center of the circle? The diameter of a circle is 60 inches and a chord of the circle is 48 inches long. How far

143. ## math percentage diff

a value of 2.40 increased to 4.48 in 5 years. what is the change in percentage each year? this one was difficult to figure out..

144. ## science

how to write a program to compute account name, account number and either employed in basis of permanent or cashier labour

145. ## Geometry

A diameter of a circle is 32 yards long. A chord is 11 yards from the center. How long is the chord?

146. ## Chemisty/Bio

Is a environment that is hypoxic or anoxic the same as acidic?? I am a little confused how the two relate to each other?

147. ## Calculus

Find the derivative of y=cot³(1-2x)² y'=3[cot(1-2x)²]² (-csc²(1-2x)²)(2-4x)(-2) y'=(-6+24x)[cot(1-2x)²]²(-csc²(1-2x)²) How do you simplify further?

2(x-5)=20x

149. ## calc 2

(dy/dx) + 8y =5

150. ## calc 2

(dy/dx) + 8y =5

x2+12x+20=0

152. ## U.S. History

How did human history in North America during the period described in the Prologue differ from the events of Asia, Eurasia, and Europe?

153. ## calc 2

(dy/dx) + 8y =5

154. ## calc 2

(dy/dx) + 8y =5

155. ## grammar

I have to know if these Demonstratives are Adjectives or Pronouns. "This appears to be the best seat available" "Please send me those in the mail."This will surely amuse Hannah's guest."

156. ## english

describe what you consider some of the "gifts you have to offer the world" and some of the "things you really need."

157. ## Calculus II

I have a function RC * dvout/dt + vout = RIin and the initial condition vout(1) = 0 for t = 0 to 7.5. When I set up the equation to be solved using Euler's method, is it: vout = vout + f(vout,t)*step size, with f(vout,t) = (RIin - vout)/RC.

158. ## axia

how do social dominance and courtship diplays have an impact on evolution

159. ## English

Could you please check the following questions? Which of the first two questions is better expressed? 1) Briefly outline the features of the 18th-century novels. Focus then on Defoe’s novels and examine their structure and characterization. 2) What were

If the time is 9:00 am in denver what time is it in los angelas ?

161. ## Grammar

I have to know if these Demonstratives are Adjectives or Pronouns."These belong to the girl who lives next door" "This aisle contains what susan wants." "That ship has been docked for three days." I have them as pronoun and 2 adjectives. Is that right?

162. ## college chemistry

For the following reaction: PCl5(g) PCl3(g) + Cl2(g) Kc=.058 If the initial concentration of PCl5(g) is .160M, calculate the equilibrium concentrations of all the components. (use quadratic)

163. ## Science PHYSICS

SO desperate with help with this. What is the magnitude of the acceleration that this force will cause when applied to a car with a mass of 1.1x10³Kg Then calculate the final speed of the car (above) assuming that it was standing still initially and that

164. ## statistics

a binomial distribution will be approximately correct as a model for one of these two sports settings and for the other. explain why by briefly discussing both settings. a)a national football league kicker has made 80% of his field goal attempts in the

165. ## Math

A plane can fly 140 mph in calm air. Flying with the wind, the plane can fly 700 mi in the same amount of time it takes to fly 420 mi against the wind. Whats the rate of the wind?

166. ## College Physics

A 315 kg object is lifted 12 meters by a motor in 15 seconds. How much power does the motor deliver?

167. ## College Physics

A 0.145 kg baseball is moving at a speed of 15.0 meter/sec east toward the bat. The bat has 3.00x10^-3 seconds contact with the ball. As a result the ball flies back at 25.0 meter/sec west. What was the force (vector!) the bat exerted on the ball?

168. ## Algebra

I need help on doing a math problem for my algebra class so if u could help i would be really grateful any way please explain. : Find two consecutive negative integers with the product of 110

169. ## Chemistry

Time, (min): 0 10 20 30 Moles,(trans): 1.00 0.90 0.81 0.73 Given the following data, what is the order of the reaction? How long will it take for the half of the trans compound to decompose?

170. ## physics

Interference effects are produced at point P on a screen as a result of direct rays from a 518 nm source and reflected rays off the mirror.If the source is 99 m to the left of the screen, and 1.15 cm above the mirror, calculate the distance y (in

171. ## Chemistry

What colligative properties are displayed by these situations. 1. Antifreeze is added to car cooling system preventing freezing when air temp is below 0 degrees C. 2. Ice melts on sidewalk after salt has been spread

172. ## Algebra

Could you explain how to factor completely -a^3n+1 + 2b^2n+b - ab - (2a^3n*b^2n)

173. ## college chem

how many mL of .100 M of acetic acid and .100 M of NaOH, would be need to make the volume 1.0 liters and have a pH7.00 if Ka=1.8x10^-5? can someone please help me with steps to get the answer

174. ## college history

if the industrial revolution increased production why did the laborers need to work such long hours weren't they producing more than before?

175. ## Grammar (will you check the rest please)

Demonstrative Pronoun or Adjective? 1. Does anyone know how to bake this cake? ADJ 2. You can check that book out of the library tomorrow. ADJ 3. That singer is ainger is quite talented. ADJ 4. Those do not heat as well as some. PRO 5. Take these to the

176. ## math

I have a math problem where I am trying to carpet a hallway of an irregular shape.The cost of the carpet is \$ 10.80 a sq.yd. How many square yds. will I need? I also need to know the perimeter for string molding. Can you help me. The measurements are

177. ## Math

One grocery clerk can stock a shelf in 40 min, whereas a second clerk requires 20 min to stock the same shelf. How long would it take to stock the shelf if the two clerks worked together? Is this how you do this: t/40 +t/24 =1 t*3/40*3 + t*5/24*5 =1 3t/120

178. ## Physics

A high jumper of mass 80.0 kg consumes a meal of 4.00 103 kcal prior to a jump. If 3.3% of the energy from the food could be converted to gravitational potential energy in a single jump, how high could the athlete jump?

179. ## science planets

how dos the alignment of the planets cause seasons?

180. ## college philosophy (Mill)

how can mill say that “there is no parity between the feeling of a person for his own opinion, and the feeling of another who is offended at his holding it; no more than between the desire of a thief to take a purse, and the desire of the right owner to

181. ## social studies

Historians have used the terms "robber barons" and "captains of industry" to describe the powerful industrialists of the late 1800's. compare the two points of view reflected by these terms.

182. ## Science

If the sun is in the center of the constellation Sagittarius on January 10, what time does it rise and set?

183. ## trig

x^2 - 3y^2 - 8x + 12y + 16 = 0 What is the center and the domain of the equation?

184. ## geometry

The longer diagonal of a rhombus is 2 times as long as the shorter diagonal. Find the length of the shorter diagonal if the area is 24in squared.

186. ## Global History

How did the Treaty of Versailles contribute to the outbreak of world war 2?

187. ## physics

In a physics lab experiment, a spring clamped to the table shoots a 22 g ball horizontally. When the spring is compressed 22 cm, the ball travels horizontally 5.2 m and lands on the floor 1.3 m below the point at which it left the spring. What is the

what happened to Rome after the Punic Wars?

189. ## Global History

How did Hitler attempt to use war as a means to restore German national pride? Give 2 ways

190. ## com150

The Internet radically reduces the cost of creating, sending, and storing information while making that information more widely available. The Internet reduces search costs, allowing customers to locate products, suppliers, prices, and delivery terms. The

191. ## com 150

elect one of the essays from the Examples of Effective Introductions section in Effective Introductions and Conclusions. Which article did you choose? What type of introduction does the writer use? What is the impact of that kind of introduction in this

192. ## to a teacher pr someone how can help me

what are irregular verbs?

193. ## Pre calculus

Find the inverse function of F(x) = 2 arccosx F-1(x)=

194. ## math

x^2 - 3y^2 - 8x + 12y + 16 = 0 What is the center and the domain of the equation?

195. ## com/220

I have to write a research paper for gun control. I would like to know what information I should be looking for and what I should try to include in my paper. I know that research writing should be unbiased but I do not know how to start. I do not want my

196. ## Physics

A 5.00-kg object placed on a frictionless, horizontal table is connected to a cable that passes over a pulley and then is fastened to a hanging 9.00-kg object. Draw free-body diagrams of both objects. Find the acceleration of the two objects and the

197. ## U. S. History

How did human history in North America differ from Asia, Eurasia, and Europe?

198. ## language expression

choose the word or phrase that best completes the sentence.my answers are all at the bottom 1)Vito ______ river rafting next week. A)had gone B)is going C)has been going D)will have been gone 2)there_____many bicycles for sale in this shop. F)is G)are

199. ## Physics

a 1.00-kg object is observed to accelerate at 10.0m/s∧2 in a direction 30.0 north of east. the force F2 acting on the object has magnitude 5.00 N and is directed north. determine the magnitude and direction of the force F1 acting on the object.

200. ## Management Accounting

I don't know which formulas to use for these questions. Many churches sponsor bingo games, a tradition stemming from the time when only specific nonprofit institutions were allowed to sponsor games of chance. Reverend Justin Olds, the pastor of a new

201. ## physics

You have a bathtub containing 100 ml of water at 25 degrees celcius. How long must you stir the water to bring the temperature of the water to 100 degrees celcius?

202. ## homework try this

i need to wright 3 sentences about my family and use irregular verbs can u give me an example please

203. ## language expression

choose the word or phrase that best completes the sentence.my answers are all at the bottom 6)by now,the relay team _____ their practice laps. F)swam G)swum H)has swum J)was swimming 7)the director ______ a speech when the guest of honor arrived A)giving

204. ## math

what is rates of change

205. ## math

how to do real word prombles

206. ## sentences

what's a sentence for column

207. ## physics

Interference effects are produced at point P on a screen as a result of direct rays from a 518 nm source and reflected rays off the mirror.If the source is 99 m to the left of the screen, and 1.15 cm above the mirror, calculate the distance y (in

208. ## University Physics II

How do you convert electric field into electric force?

209. ## help

what's a sentence for glisten and tomb

210. ## algebra

Could you explain how to factor completely -a^3n+1 + 2b^2n+b - ab - (2a^3n*b^2n)

211. ## Pre-Calculus

A wire from the top of a TV tower makes an angle of 49.5 with the ground and touches the ground 225 feet from the base of the tower. How high is the tower?

212. ## Algebra

There are three consecutive integers the square of the largest one equals the sum of the squares of the two other.Find the integers

213. ## Math Simplification 7th grade

I'm skipping luch to do a project and I have the answers, just nt enough time to simplify! I'm short on time! 39/49=? 45/73=? 42/60=?

214. ## chemistry

What is the equation of the preparation of K3[Al(C2O4)3].3H2O using Al2(SO4)3?

215. ## physics

Find the voltage increase when 12 J of work is done to push a 0.0013 C charge into an electric field.

216. ## Physics

Why is sin theta used in the torque formula while the work formula uses cosine theta?

217. ## Math

How do you do this problem because i feel like i did it wrong (3ã2 + 4)^2 (3ã2 + 4)(3ã2 + 4) 9ã4 + 12ã2 + 12ã2 + 16 9*2ã2 + 12ã2 + 12ã2 + 16 18ã2 + 12ã2 + 12ã2 + 16 = 42ã2 + 16

218. ## Calculus II

I have a function RC * dvout/dt + vout = RIin and the initial condition vout(1) = 0 for t = 0 to 7.5. When I set up the equation to be solved using Euler's method, is it: vout = vout + f(vout,t)*step size, with f(vout,t) = (RIin - vout)/RC.

219. ## science

Objects take up space and move through space different ways. Scientists use these differences to make models. For example, how a rubber band stretches helps you "see" the force acting on it. How could you use space relationships to model Earth and its

220. ## Physics

A dentist's drill starts from rest. After 3.00 s of constant angular acceleration it turns at a rate of 2.8 104 rev/min. (a) Find the drill's angular acceleration. (b) Determine the angle (in radians) through which the drill rotates during this period.

221. ## chem

if you were invoolved in an acid rain monitoring project with several other samplers,why would it be important that all of your samples on the same day and do the alkalinity tests within 24hrs