# Questions Asked onNovember 11, 2011

1. ## calculus

This is problem 16 Section 4.6 page 246. A closed box with square base is to be built to house an ant colony. The bottom of the box and all four sides are to be made of material costing dollar/sq ft, and the top is to be constructed of glass costing

2. ## Physics

A constant torque of 27.2 N · m is applied to a grindstone for which the moment of inertia is 0.158 kg · m2. Find the angular speed after the grindstone has made 18 rev. Assume the grindstone starts from rest. Answer in units of rad/s

3. ## chemistry

how many mL of 0.15 M NaOH solution are required to neutralize 35.00 mL of 0.22 M HCl

4. ## Physics

A boy walk 1km due north.what is his displacement?

5. ## English

Base all answers on this passage They Flee from Me --Sir Thomas Wyatt They flee from me, that sometime did me seek With naked foot stalking in my chamber. I have seen them gentle, tame, and meek That are now wild, and do not remember That sometime they put

6. ## English

Can someone let me know if these answers are right? Thanks in advance! Questions 1-7 all have the same format and answer choices. The answer choices are fully explained here, but they are in shortened versions in the remaining questions. Although you do

7. ## chemistry

Sorryy but I still don't understand will you show the calculations for my previous question

8. ## Physics help!!

A crate is pulled to the right with a force of 80 N, to the left with a force of 125.8 N, upward with a force of 615.4 N, and downward with a force of 248 N. Net external force in the x direction: -45.8 Net external force in the y direction: 367.4 N how do

9. ## statistics

A shipping company received an order of 1645 packages. The manager needs to determin the mean weight of the packages. (A) How many randomly selected packages would be need to weight to estimate with a 95% confidence, the mean weight within +/-1.5 pounds if

10. ## Math

How do i arrange these from least to greatest 4/4, 3/8, 2/3, 5/10

11. ## Math

What is the greatest odd number that uses digits 3, 4, 5 once each?

12. ## math

Four good friends, who love cats, have each named their cat after one of the other friends. Of the clues that follow, only one is true; the others are false. Which friend owns which cat? a.Candy’s cat is named either Dody or Alice. b.Betsy’s cat is

13. ## PROBABILITY MATH

Suppose one card is selected at random from an ordinary deck of 52 playing cards. Let A= event a diamond is selected B=event a club is selected Determine P(A|(not B)) DrBob said it is 1/3 but how did he get it? I keep getting answer 1 or 21/26

14. ## algebra

The area of a rectangular swimming pool is given by 4x^2+19x+12ft^2.One side length of the pool is given by 4x + 3 feet. What is an algebraic expression for the other side length of the pool?

15. ## college algebra

The area of a rectangular swimming pool is given by 4x^2+19x+12ft^2.One side length of the pool is given by 4x + 3 feet. What is an algebraic expression for the other side length of the pool?

16. ## geometry

PICTURE FRAMING The matting around the picture has a uniform width. How wide is the matting if its area equals the area of the picture? Round to the nearest of an inch. |---------------------------| | | | | wide | | | | | | | 4in long | | | | | | | | | | |

17. ## Physics

how much work is done when a magnet pulls a piece of iron?

18. ## physics

Q A man throws a ball weighing 500g vertically upwards witha speed of 10m/s. 1) what will be its initial momentum? 2) What would be its momentum at the highest point of his flight?

19. ## physics

Q A man throws a ball weighing 500g vertically upwards witha speed of 10m/s. 1) what will be its initial momentum? 2) What would be its momentum at the highest point of his flight?

20. ## chemistry

what is the concentration of the hydroxide ion in an acidic solution?

21. ## proof read and make corrections

Public schools vs. Private schools Private and public schools education differs in many ways, there are many differences of both types of schools such as their academic programs, class sizes and admissions requirements that makes a private school better

22. ## Maths

How to solve questions on Rates

23. ## calculus

the lemniscate revolves about a tangent at the pole find sufaces of the solid generated?

24. ## math

Use fraction bars to find the difference. Write the answer in simplest form. 5 - 3 1/2

25. ## chemistry

A buffer is made by dissolving H3PO4 and NaH2PO4 in water. a. write an equation that shows how this buffer neutralizes a small amount of acids. b. write an equation that shows how this buffer neutr?

26. ## English

Could you please help me express the following concept? I included two other sentences. 1) I need to start an e-mail saying that I'm extremely sorry for writing so late. (because I've been busy checking with students' tests). 2) Many animals risk dying

27. ## physics

Juggles the clown stands on one end of a teeter-totter at rest on the ground. Bangles the clown jumps off a platform 2.7 m above the ground and lands on the other end of the teeter-totter, launching Juggles into the air. Juggles rises to a height of 3.8 m

28. ## chemistry

what is the pH of a solution that has a H+ concentration equal to 1.76 x 10-5M? I got 4.75 is this correct

29. ## Chemistry

What gas involved during the reaction between zinc and hydrochloric acid? I know it's hydrogen, but why?

30. ## chemistry

I need help calculating [H3O] from pH and the pOH scale using my calculator. I have a TI-30XIIS

31. ## probability qn urgently need help

A group of 5 boys and 4 girls take part in a study on the type of plants found in a reserved forest area. Each day, two pupils are chosen at random to write a report. a) Calculate the probability that both pupils chosen to write the report on the first day

32. ## chemistry

what is the ph of a solution that has [H] = 0.0045 can you show steps pls

33. ## chemistry

Titration of 25.00 mL of KOH required 200.00 mL of 0.0050 M acetic acid, CH3COOH. What is the molarity (M) of the KOH solution? Please show calcutions.

34. ## Logic

Lalph Rauren was famous for discovering potential models as he walked the streets of New York. One day he spotted four girls who later became top models: Amy, Mary, Kay, and Beth. One was discovered walking through an apartment building, one in a coffee

35. ## Chemistry

How do valence electrons play a part in the physical or chemical charactersitics of an element?

36. ## logic

A famous detective was called in to solve a baffling murder mystery. He determined there was only one cause of death along with the following facts: a.Mr. Harold, the murdered man, was killed by a blow on the head with a brass candlestick. b.Either his

37. ## math

What is the slope of a line that is parallel to y=2? What is the slope of a line that is perpendicular to y=2? Is it "0"?

38. ## trig

whatis the possibilities for the square root of 2 times tan theta = 2 sin theta

39. ## math

Five years ago, you bought a house for \$171,000. You had a down payment of \$35,000, which meant you took out a loan for \$136,000. Your interest rate was \$5.6% fixed. You would like to pay more on your loan. You check your bank statement and find the

40. ## Communication Skills

I have this text and i don't understand the question that's below it (English is not my first language... and im not looking for answer its just i'd like to understand the question so i can come up with answer myself) Charlotte is a 43 year old mother of

41. ## business ENGlish - Claim letter

This is the exercise below i'm gonna write my answer: You need to write the Parks Board in your country a request for a refund. You held a family reunion at whitewater park on Saturday at the OAK pavilion which you had reserved for your group at a cost of

42. ## precalculus

solve the inequality express your solution using interval notation x^4-7x^3+12x^2

asked by mz deedee
43. ## Chemistry

The pKa of phenol is 10.00, determine the Ka to two significant figures.

asked by ALEX GIROX
44. ## biology

another way to afect the enzyme is lowering the pH of the solution. However, lactase is supposed to be able to work in the stomack. Would lowering the pH of the enzyme solution affect the enzyme? Why or why not?

45. ## proofreading English

Public schools vs. Private schools Private and public schools education differs in several ways. There are many differences of both types of schools such as their academic programs, class sizes and admissions requirements that makes a private school better

46. ## math

1.0 Solve for x: (a) 2x ¨C 3(x + 2) ¡Ý 5x ¨C( x- 5) (b) Solve simultaneously x - 5¡Ü 2 and x ¨C 1 ¡Ý 3 2.0 Find solution to: (a) 5/(x-1) > 0 (b) (3x+3)/(3x-x2 ) < 0

47. ## Help- Physics

How much work did the movers do (horizontally) pushing a 130kg crate 10.1 m across a rough floor without acceleration, if the effective coefficient of friction was 0.50?

48. ## English

I urgently need to express these concepts. (Actually, I tried to express the same concept in two different ways). I hope you can help me. 1) Thank you very much for your cooperation in carrying out a common project involving both our school. 2) I can

49. ## Chemistry

Identify the equation for which Keq= [Cu+]2[S2-]

50. ## calculus

considering that x is the independent variable in this equation: y + y^3 + 3 = e^y^2 + 3^x * cos(3y) - x Evaluate dy/dx I get to: dy/dx (1+3y) = e^y^2 * 3y^2 * dy/dx + 3^x * ln3 * (-sin(3y)) * 3 *dy/dx -1 Will it give me? dy/dx(1+3y) = dy/dx((e^y^2 * 3y^2)

51. ## trig/math

If A is between 270degrees and 360degrees, and cos A=12/13, find the exact value of: sin2a, cos2a, sin1/2a, cos1/2a

52. ## physics

The drawing shows a person (weight W = 580 N, L1 = 0.849 m, L2 = 0.410 m) doing push-ups. Find the normal force exerted by the floor on each hand and each foot, assuming that the person holds this position.

53. ## physics

The drawing shows a person (weight W = 580 N, L1 = 0.849 m, L2 = 0.410 m) doing push-ups. Find the normal force exerted by the floor on each hand and each foot, assuming that the person holds this position.

54. ## physics

The drawing shows a person (weight W = 580 N, L1 = 0.849 m, L2 = 0.410 m) doing push-ups. Find the normal force exerted by the floor on each hand and each foot, assuming that the person holds this position.

55. ## Calculus (2)

find the first and second derivative of: f(x) = (x+2)/e^x I get to: f'(x) = e^x - (x+2)(e^x) / (e^x)^2 I'm stuck at that

56. ## grammar checking

Hi :) I need help to see if my grammar is proper, and if not please help me this is my first paragraph. :) Fables are short stories that have animals as characters. A fable teaches a moral, and morals are valuable lessons. So, all fables teach us lessons

57. ## Excel-Exponential Fits

Hey Im trying to plot this set of data: 0 0 10 0.6 20 1.01 30 1.428 40 2 50 2.3 60 2.57 70 2.8 80 3.05 90 3.35 100 3.54 110 3.73 120 3.9 130 4.08 140 4.25 150 4.39 160 4.53 170 4.65 180 4.754 190 4.846 200 4.943 210 5.011 220 5.111 230 5.175 240 5.23 250

58. ## math

50 is what percent of 900 (Round to nearest tenth of a percent

59. ## psychology

A massage therapist stimulates the body, which in turn stimulates the: a. parietal lobe b. temporal lobe c. pituitary gland d. prefrontal cortex

60. ## trig

I have these sum and product property problems and I just want to make sure my work is right. Write equations expressing 1. cos 37degrees cos99degrees as a sum Answer: sin136+(-62) 2. sin4+sin7 as a product Answer: 2sin5.5 sin-1.5 3. cos 8x - cos 2x as a

61. ## math

Establish a 99% confidence interval for the population proportion if a sample of 200 had a sample proportion of 42%.

62. ## precalculus

solve the logarithmic equation . express solution in exact form log5(x-9)+log5(x+4)=1+log5(x-5)

asked by mz deedee
63. ## Math

Use your new conjectures to arrange the unknown measures in order from greatest to least. Measures 5cm,9cm and 12cm

64. ## Math

Calculate the minimum sample size required to find the 90% interval estimate for a population proportion if you want to be accurate within 2%.

65. ## Physics

A cheetah starting form rest can reach a maximum speed of 28m.s in 2s and it can maintain this maxium speed for 15s after this it must rest. suppose an antelope and a cheetah initially at rest are separated by a displcament of magnitude 100m.The antelope

66. ## trig

determine the phase shift of y = sin(3x - 2pi). indicate whether the shift is to the right or left.

67. ## Chemistry

For the reaction Ag2S 2Ag + S2 what happens to the equilibrium position if aqueous ammonium sulfide is added A. Shift left B. Shifts right C. Does nothing D. Doubles E. Halves

68. ## solution

Mr. Hammad is a salaried person and thinking to save for the education of his daughter. In this concern he is considering two diverse saving plans for ten years. 􀃆 First plan requires a deposit of Rs 5,000 every six months with annual interest rate of

69. ## COM 150

Will someone please check this assignment for me? COM 150 Comprehensive Grammar CheckPoint Read the following sentences, and focus on the grammar area specified in the left column. Then, complete Appendix H by selecting the correct sentence (a or b) for

70. ## sdfghj

a certain force acting on a body of mass 2 kg increases it's velocity from 6m/s to 15m/s in 2 seconds . the work done by the force during this interval is ?

71. ## precalculus

Solve the logarithmic equation. Express your solutions in exact form only. 18e^-x -e^x=7

72. ## SBS assignment

Hi, I have an assignment due next week and I found an article on 9/11 and its psychological impact. If any of the tutors can Google, "9/11 had psychological impact Beaver County Times", that would be great. I need to define the types of psychology that the

asked by Alex L.
73. ## opinion

Do you think that fantasy movies about social issues help to bring the right kind of attention to the matter, or do they detract and/or lessen it's actual severity?

74. ## geometry

Points P(1, 5) and Q(4, 1) on a coordinate grid represent side PQ of triangle PQR. What is the length of side PQ of the triangle?

75. ## precalculus

Find the inverse of the function below. Graph the function below and the inverse function. Determine the domain, range, and asymptotes of the function below and the inverse function. Please show all of your work. and graph. f(x)=e^-x/2+4

76. ## Chemistry

What is the concentration of the Mg2 ion in solution when [CO3-2] = 0.25M given that the Ksp= 6.82 x 10-6 for the following reaction MgCO3-------->Mg +. CO32-

77. ## precalculus

For the given functions f ,g , and h , find fogoh and state the exact domain of fogoh . Please show all of your work. f(x)=e^x g(x)=sqrt x h(x)=2x^2+3x-35

78. ## SI Chemistry

What could you do to make sure that you yielded all of the product possible in an equilibrium system? btw you guys are awesome! you are total life savers on these!

79. ## math

Five years ago, you bought a house for \$171,000. You had a down payment of \$35,000, which meant you took out a loan for \$136,000. Your interest rate was \$5.6% fixed. You would like to pay more on your loan. You check your bank statement and find the

80. ## literary

Do many people believe what they do without giving those beliefs critical scrutiny?

81. ## MATH

(A) Classify the following as an example of nominal, ordinal, interval, or ratio level of measurement, and state why it represents this level: zip codes for the state of Pennsylvania (B) Determine if this data is qualitative or quantitative: Nationality

82. ## MATH

An insecticide company exposes 10,000 cockroaches to its newest product, and exposes another 10,000 to their previous formula. The researchers use videotape to count how many cockroaches are still alive, and how many appear to be in distress, at 10 second

83. ## MATH

Construct both an ungrouped and a grouped frequency distribution for the data given below: 207 211 204 208 202 203 211 202 205 212 210 212 204 199 204 201 213 200 204 207

84. ## MATH

A set of 50 data values has a mean of 27 and a variance of 16. I. Find the standard score (z) for a data value = 19. II. Find the probability of a data value < 19. III. Find the probability of a data value > 19.

85. ## MATH

Answer the following: (A) Find the binomial probability P(x = 4), where n = 12 and p = 0.30. (B) Set up, without solving, the binomial probability P(x is at most 4) using probability notation. (C) How would you find the normal approximation to the binomial

86. ## MATH

Assume that the population of heights of male college students is approximately normally distributed with mean of 72.15 inches and standard deviation of 6.39 inches. A random sample of 96 heights is obtained. Show all work. (A) Find P (x > 73.25) (B) Find

87. ## math

solve the inequality, write answer using interval notation pleas show the work 50/x+4+1

asked by mz tee
88. ## math

list all the possible rational zeros for the polynomial below. find all the zeros of the polynomialbelow and factor completely. F(x)=5x^4-x^3-33x^2-43x-16

89. ## precalculus

solve the inequality in the complex number system. x^4+x^3+4x^2+10x-60=0

90. ## Psychology

I found an article on 9/11 and its psychological impact prior to today. I think that it's related to counseling, health, and/or social psychology after reading it.

asked by Alex L.
91. ## precalculus

analyzethe graph of the function Find the x- and y-intercepts. (b) Determine the end behavior: find the power function that the graph of f resembles for large values of |x|. (c) Find the maximum number of turning points. (d) Graph the function Please show

92. ## Pre-Vet Research

I just need to be sure that my personal explanation, from hands on research with sharks, of what causes tonic immobility makes sense. What I found is that the only stimuli needed to induce tonic immobility on sharks, rays, and skates is slight compression

93. ## precalculus

Given f(x) and g(x) below, find: (a) f + g (b) f – g (c)f*g(d)f/g Please show all of your work. f(x) = 5x^2-5 g(x) = x – 7

94. ## Chemistry

What gas involved during the reaction between zinc and hydrochloric acid? I know it's hydrogen, but why?

95. ## precalculus

Find (a) the equation of a line that is parallel to the given line and includes the given point, and (b) the equation of a line that is perpendicular to the given line through the given point. Write both answers in slope-intercept form. (c) Graph both of

96. ## Opinion on Myths

What do you make of the similarities between Japanese and Greek myths (for lack of a better word)?

97. ## Grammar

1.Each of the patients __________ discharged at noon. A) was B) were 2.Each of the nurses __________ her favorite uniform. A) has B) have 3.The nurse asked the patient and _________ to leave the room. A) I B) me C) myself 4.They will call someone who can

98. ## spirituality and supernatural

We can see that spirituality and the supernatural plays a large role in any culture and society, it's influence can be seen in the Buddhist sects of Japan. How this influence is seen within the Japanese culture through modern media and films. How do films

99. ## english

what three words create assonance in the stanza One day a girl went walking and stepped into a store she bought a pound of sausages then set them on the floor.

100. ## college math

use long division 1.2x3+3x2-17x+1 /x-2 2.y3+3y2+1 /y-2 3.n5-n2 /n2-n

101. ## statistics

A nationwide study indicated that 27% of adults said that chocolate was their favorite ice cream flavor. A simple random sample of 150 adults is obtained. A.) Describe the sampling distribtuion of p, the sample proportion of adults whose favorite ice cream

102. ## Business English

This email must me turned into a Routine Inquiry. Hello, I'm currently having a retail company that I import biological products, called 'Healthy life'. I saw your company advertisment on october 2011 in Dwell magazine and decided to communicate with you.

103. ## Chemistry

If you have 290.0 mL of water at 25.00 °C and add 120.0 mL of water at 95.00 °C, what is the final temperature of the mixture? Use 1.00 g/mL as the density of water.

104. ## History of America

Write AT LEAST a paragraph describing NATO in more detail. Include: - What it is - When and why it was created - Some of the key members - What you think some of the key treaty provisions are - Some of the organization's achievements The only thing I need

105. ## Chemistry

The amount of energy released by burning a fuel source, measured in energy per mass, is called the fuel value. If all the energy obtained from burning 1.25 pounds of propane (fuel value is 11.09 kcal/g) is used to heat 123.0 kg of water at an initial

106. ## Chemistry

If a system has 2.50 × 102 kcal of work done to it, and releases 5.00 × 102 kJ of heat into its surroundings, what is the change in internal energy of the system?

107. ## Physics

A metal sphere has a charge of +12C. What is the net charge after 2.1 x 1013 electrons have been placed on it?

108. ## Spanish 9th grade

Are these correct the way I answered them? 1.Cuál es tu deporte favorito? Mi deporte favorito es el béisbol. 2. Para ti, ¿el tenis es más interesante o menos interesante que el fútbol? Para mi, el tenis es menos interesante que el fútbol. 3. Para ti,

109. ## Science

My question is, What was the function of a capacitor in an electric current? Could someone please help me I ruled out one of my theorys already and that was to increase circuit power. Was it to allow current flow between its plates? Was it to measure the

110. ## discussion

What is the difference between current sources and relevant sources? Is it possible a source might fit one category, but not the other? How?

111. ## computer

Which type of graphics file format keeps track of each individual point in the image? (Points: 5) Bitmap Detailed image Pointilated Vector is it "Vector"

112. ## math

Let W be the set of all continuous fuctions from the set of real numbers R to R. For f, g in W define f+g by (f+g)(x)=f(x)+g(x) and (f*g)=f(x)g(x). Verify that W is a commutative ring. Does W have unity? Why or why not?

113. ## Computer

If you want to create images that can be easily resized, or one that looks like it was created with a pencil or pen, you should choose a __________ graphics package. (Points: 5) bitmap-based colorized raster-based vector-based Is it D

114. ## Precalc (complete the squares)

(2x+1)^2 +4=0 solve the equation. help please :(

115. ## Managerial Economics

(Long-Run Average Cost Curve) Explain the shape of the long-run average cost curve. What does “minimum efficient scale” mean?

116. ## chemistry

A salt is obteind as a reaction between

117. ## statistics

2. Punkey Electronics, a small manufacturer of electronic research equipment, has approximately 7,000 items in its inventory. They just hired Joe Detail to manage the inventory. Joe has determined that 10% of the items in inventory are A items, 35% are B

118. ## 7th Grade English

Ok I need help writing my intro. for my essay for the first sentence Im writing whats diversity means but what else should I right ?

119. ## Written Analysis

I need help with my project. I have to write 4-6 paragraphs summarizing three solution ideas on Discrimination. I also have to develop criteria or standard that can be used to evaluate the final solution.

120. ## Chem

what is the Net Ionic equation for: 1. MgCl2+NaOH-> 2. MgSO4+Sr(NO3)2->

121. ## operations management

Pure Plastics Inc. manufacture molded plastic pieces. A sample of their raw material inventory is shown in the table below: Item Average Inventory (units) Value (\$/unit) 128 400 3.75 234 300 4.00 233 120 2.50 236 75 1.50 239 60 1.75 240 30 2.00 678 20 1.15

122. ## computer

What graphics program would you use to create a vector-based graphic that is easily resizable? (Points: 5) CAD Draw Paint Photo-editing im confused between A and C

123. ## Physics

In a series circuit, a generator (1400 Hz, 12.0 V) is connected to a 15.0- resistor, a 3.80-μF capacitor, and a 5.70-mH inductor. Find the voltages across (a) the resistor, (b) the capacitor, and (c) the inductor.

124. ## computer

How does a computer generated animation work? (Points: 5) The computer creates constant movement in the characters. The computer, along with human workers, moves the characters on the screen. The computer creates a set of continuous movements, one

125. ## statistics

Suppose that there are 10 million workers in Canada and South Korea and each worker in Canada and South Korea can produce 4 cars per year. A Canadian worker can produce 10 tonnes of grain a year, whereas a South Korean worker can produce 5 tonnes of grain

126. ## Math

Ed long promised to pay is son \$400 semiannually for 12 years. Assume Ed can invest his money at 6 % in an ordinary annuity. How much must Ed invest today to pay his son \$400 semiannually for 12 years?

127. ## English

I urgently need to revise these sentences. Could you please help me? 1) In my family we are six of us: my father, my mother etc. 2) I like very much playing instruments. I don't like doing shopping. I like lots of sports. 3) My mum usually cooks breakfast

128. ## Math

Alice Longtree has decided to invest \$400 quarterly for 4 years in an ordinary annuity at 8 %. As her financial adviser, calculate for Alice the total cash value of the annuity at the end of year 4.

129. ## Math

Jeff Associates borrowed \$30,000. The company plans to set up a sinking fund that will repay the loan at the end of 8 years. Assume a 12 % interest rate compounded semiannually. What must Jeff pay into the fund each period of time?

130. ## Calculus

Find the three zeros for the following function on the interval -5

131. ## MATH

2x -4y = 8 find the real number for x and y

132. ## Math

Simplify by factoring Assume that all expressions under radicals represents non negative numbers 3square root symbol 162x8 I end up with 3x 3squareroot symbol 2x^5 I don't think this is correct help

133. ## Spanish

I am trying to complete this Paragraph using these 7 words. 1. eres 2. soy 3. aveces 4. deportista 5. segun 6. le gusta 7. se llama. Some of the words can be used twice. Como se llama tu amigo.__________1. Kiko. Que _________2.hacer? Pues,__________3.

134. ## Chemistry

What happens to the equilibrium constant when a catalyst is added to the reaction mixture. A. Increase B. Decrease C. Does not change D. Varies E. None of the above I chose c

135. ## stats

The Quality Assurance Department selected a sample of 12 printed circuit boards and tested them. The number of defects in each circuit board was 3, 3, 0, 5, 1, 1, 5, 6, 6, 2, 0, and 1. What kind of control chart should be constructed to monitor the

136. ## English

I left out the following sentences. Thank you very much for your invaluable help! 1) I don't like reading novels because they are sometimes too abstract. I've got a quite oval face. 2) I like doing clothes shopping. At five o'clock I do to calisthenics

137. ## Riddle HELP

so heres the riddle ,i am fat but little im on a tv show for little kids im blue my name starts with b i have to horns in my head and im dangers what am i?

138. ## 10th geometry

what is the common ratio of FDE to CAB?

139. ## calculus

Suppose that 404 ft of fencing are used to enclose a corral in the shape of a rectangle with a semicircle whose diameter is a side of the rectangle. Find the dimensions of the corral with maximum area. x=........ft Y=......ft

140. ## calculus

A box is constructed out of two different types of metal. The metal for the top and bottom, which are both square, costs \$4 per square foot and the metal for the sides costs \$4 per square foot. Find the dimensions that minimize cost if the box has a volume

141. ## precalculus logs

what is the domain of f(x)=-ln(-x) and the inverse

142. ## physics

A top is a toy that is made to spin on its pointed end by pulling on a string wrapped around the body of the top. The string has a length of 59 cm and is wrapped around the top at a place where its radius is 1.9 cm. The thickness of the string is

143. ## physics

One end of a meter stick is pinned to a table, so the stick can rotate freely in a plane parallel to the tabletop. Two forces, both parallel to the tabletop, are applied to the stick in such a way that the net torque is zero. The first force has a

144. ## physics

Review Conceptual Example 7 before starting this problem. A uniform plank of length 5.0 m and weight 225 N rests horizontally on two supports, with 1.1 m of the plank hanging over the right support (see the drawing). To what distance x can a person who

145. ## science

What object has a capacity of exactly 80 cups. 1.Bucket 2.Punch Bowl 3.Fish Tank 4.Sink

146. ## History

In the book Conscience by Louisa Thomas, from the first chapter to the sixth, is there any main event that occurs? I know that Norman goes to Princeton, then travels a lot to different churches and he gets married, but these aren't really main events yet.

147. ## algebra

Please I need help: Find the vertex, the line of symmerty and the maximum or minmum value of the quadratic function: f(x)= 2x^2+2x+3

148. ## 6th grade science

Mechanical weathering occurs at a greater rate in climates that are 1) cold and wet 2) warm and wet 3) hot and dry 4) cold and dry

149. ## physics

If you push the outer edge of a 1.05-m-wide door with a 23.0-N tangential force, what torque results? What is the torque if you apply the same magnitude of force, in the same place, but at a 45 degree angle?

150. ## social and criminal justice

Hello I have a 2 to 3 page paper due on Monday 11/14, 2011 and I am having trouble finding good reliable information to complete the assignment. The instructions are to: Prepare a paper identifying at least three changes expected in the field of criminal

151. ## Physics

An 83.2-kg propeller blade measures 2.24m end to end. Model the blade as a thin rod rotating about its center of mass. It's initially turning at 175rpm. Find the blade's angular momentum, the tangential speed at the blade tip, and the angular acceleration

152. ## Grammar

1.A piece of the suture __________ embedded in the scar tissue. A) was B) were 2.He is the doctor __________ performed my appendectomy A) who B) whom C) whose 3.Neither the fracture nor the laceration __________ surgery. A) require B) requires 4.The

153. ## 6th grade science

which soil conservation technique did George Washington Carver urge farmers to use??? 1) crop rotation 2) cover crops 3) contour plowing 4) no-till farming

154. ## physics

A uniform plank of length 5.0 m and weight 225 N rests horizontally on two supports, with 1.1 m of the plank hanging over the right support (see the drawing). To what distance x can a person who weighs 408 N walk on the overhanging part of the plank before

155. ## statistics

given 100,90,80,75,70,60,30,25,5,4 what score corresponds to the 70th percentile?

156. ## statistics

give an example where the median would be less than the mean.

157. ## 6th grade science

limestone is made of the remains of organisms.In what way have decaying plants changed Florida's limestone bedrock? 1) decaying plants acidify water,which desolves limestones 2)decaying plants absorb water,which keeps limestone from dissolving 3)decaying

158. ## Physics

A student places her 330 g physics book on a frictionless table. She pushes the book against a spring, compressing the spring by 9.90 cm, then releases the book

159. ## Psycho Hepl Please

Todd said to his wife, "Honey, you know how we have always wanted to be in business for ourselves? Well, today I did it! I have rented a 3,00 square goot business, hired six employees, ordered office furniture; we are in business." During the first three

160. ## Chemistry

a diver exhales a bubble with a volume of 250mL at a pressure of 2.4atm and a temp. of 15*C. How many gas particles are in this bubble?

161. ## Chemistry

a cylinder of helium has a volume of 8.0 L. The pressure of the gas is 388 lb in -2 at 25*C. What volume will the helium occupy at a standard atmospheric pressure (14.7 lb in -2) assuming there is no temperature change?

162. ## Chemistry

There is a balloon filled with methane,CH4. If the mass of the methane is 68.34g, what is the volume of the balloon at 0.805 atm and a temperature of -10*C?

163. ## Find the Zeros

Find the three zeros for the following function on the interval -5

164. ## Chemistry

The half-life for beta decay of strontium-90 is 28.8 years. A milk sample is found to contain 10.3 ppm strontium-90. How many years would pass before the strontium-90 concentration would drop to 1.0 ppm?

165. ## Physics

A beam has a mass M and length L. A point mass m is located in distance d from the end of the beam and the point mass and the beam lies on the same line.a)Calculate the gravitational force of the beam on the point mass.b)Calculate the gravitational force

166. ## statistics

Suppose that the height of male students at a large university is normally distributed with a mean of 69 inches and a standard deviation of 3.0 inches. If 16 samples consisting of 25 students each are obtained, what is the probability that the mean of

167. ## math

Base of a triangle is 12 inches longer than twice the length of altitude x. Write polynomial area of triangle.

168. ## Math

Can you simplify the fraction 63/323? I've tried....

169. ## English

What is the meaning of this stanza? Money maketh festival, Wine she buys, and beds can strow; Round the necks of captains tall, Money wins them chains to throw, Marches soldiers to and fro, Gaineth ladies with sweet eyes: These alone can ne'er bestow

170. ## chemistry

calculate the hydronium ion concentration in 0.125M formic acid, HCHO2 Ka= 1.8 x 10-4 can you show me the steps pls

171. ## chemistry

calculate the pH of a buffer solution containing 0.200M acetic acid, HC2H3O2, plus 0.150M sodium acetate. The dissociation constant for HC2H3O2 is 1.76 x 10-5 I don't think our instructor gave enough notes on these things Im kind of winging it from the

172. ## Math

A star is 300 light years away from Earth. If the speed of light is 3 X 10^5 km/s, calculate the distance the star is from Earth. Give your answer in kilometers and written if standard form.

173. ## statistics

Suppose a population distribution of SAT scores has population mean 500 and population standard deviation 100. What is the mean of the sampling distribution of sample means, ybar , calculated from samples of size n = 36

174. ## Physics

A record has an angular speed of 47 rev/min. Through what angle does it rotate in 1.07 s? Answer in units of ra

175. ## chem

Suppose that the microwave radiation has a wavelength of 10.8cm . How many photons are required to heat 295ml of coffee from 25.0 C to 62.0 C? Assume that the coffee has the same density, 0.997g/ml , and specific heat capacity, 4.184J/(gk) , as water over

176. ## Chemistry

Calculate the pH buffer made by combing 50.0 mL of 1.00M ammonia and 50.0mL of ammonium nitrate. Can I use the same formula? If so do I do anything with the mL

177. ## geometry

Find the lengths of the sides of the triangle with dimensions 2x, 2x-3, 15

178. ## Chemistry

For the reaction 2 N2O O2 + 2 N2 what happens to the equilibrium position if the pressure is increased

179. ## chemistry

What is the ÄH°vap of a liquid that has a vapor pressure of 641 torr at 81.7°C and a boiling point of 91.1°C at 1 atm?

180. ## college physics

What distance will a 10 hp motor lift a 2000 lb elevator in 30 s? What was the average velocity of this elevator during the lift?

181. ## CHEMISTRY

Which is NOT a solution? 1 metal alloys, 2 ice in water, 3 sugar in water, 4 vinegar in water.......the answer is ice in water correct?

182. ## calculus

how would you differentiate (-(x^2+1)^{1/2))/(1/2)+ln(x+(x^2+1)^(1/2)

183. ## Socials plese help

I need help with socials homework. Have written parapgraphs below but need help with answers. Tried myself to get them but not certain if I got right. On September 8, Prime Minister King called a special session of Parliament to decide Canada's response.

184. ## Geology(GIS)

How can I get the coordinates of major industries in Riverside county added to a ArcMap?...Its a project and i need some help putting daTA INTO MY map...Thank You!!!..

185. ## Math

Divide the sum of x^2+4x-1 & 2x-2 by -3x^4

186. ## socials

another same paragraph question. In the early months of the war, Mackenzie King hoped that Canada's contribution to the war effort would remain as much as possible at home. This way, the issue of conscription could be avoided. The British Commonwealth Air

187. ## socials

Compare Canadians' reaction to the announcement of World War I with that of World War II. Why did many people volunteer? Well this what my friend said. The World War I announcement shattered Canadian's hearts, they were not willing to help with the war

188. ## Statistics

For all of the following use the five step process to solve the problem in the question, that is, state the null hypothesis, the alternative hypothesis, the level of significance and the type of test (z-test, t-test, p-value, confidence limit and whether

189. ## algebra

is the ordered pair a solution of the inequality? (6,15); 8y-9x>8

190. ## statistics

On average, 30-minute television sitcoms have 22 minutes of programming.If a probability distribution for minutes of programming can be approximated by a uniform distribution from 18 minutes to 26 minutes. What is the probability a sitcom will have 25 or

191. ## statistics

On average, 30-minute television sitcoms have 22 minutes of programming.If a probability distribution for minutes of programming can be approximated by a uniform distribution from 18 minutes to 26 minutes. What is the probability a sitcom will have 25 or

192. ## statistics

On average, 30-minute television sitcoms have 22 minutes of programming.If a probability distribution for minutes of programming can be approximated by a uniform distribution from 18 minutes to 26 minutes. What is the probability a sitcom will have 25 or

193. ## Intermediate algebra

The current in a typical mississippi river shipping route flows at a rate of 4mph. In order for a barge to travel 24mi upriver and then return in a total of 5hr, aproximately how fast must the barge be able to travel in still water?

194. ## Chemistry

Name 3 buffers that exist in the human body? Include the conjugate and acid base pairs

195. ## socials

paragraph question With the declaration of the war, the Canadian government immediately became much more involved in the planning and and control of the economy. In April 1940, the government established the Department of Munitions and Supplies, and King

196. ## physics

a helicopter has a speed relative to the air of 76km/h northeast. The speed of the wind relative to the ground is 28km/h south. 2 hours after leaving the ground, what is the displacement of the helicopter relative to the ground?