# Questions Asked onJanuary 30, 2013

1. ## Math Homework

In a clinical trial, a drug used to relieve pain caused side effects in 2% of the patients who took it. For a new trial, three patients were selected at random. Find the probability that all three of the patients had side effects

2. ## Chemistry

Consider the reaction 5Br(aq) + BrO3(aq) + 6H^+(aq)-> 3Br2(aq) + 3 H2O(l? The average rate of consumption of Br- is 1.16×10-4 over the first two minutes. What is the average rate of formation of Br2 during the same time interval?

3. ## Math

2. Three members of a 12 person singing group are going to be chosen to sing a song in their coming concert. A) how many different groups containing 3 people can be chosen from the 12 members of the singing group? B) what Is the probability that mike and

4. ## Arrhenius Reaction

The activation energy of a certain reaction is 32.9 kJ/mol At 25 degrees C the rate constant is 0.0160 units s-1 units. At what temperature in degrees Celsius would this reaction go twice as fast? Given that the initial rate constant is 0.0160 s-1 at an

5. ## Chemistry

Draw the possible products resulting from the addition of 1 equivalent of HCL to 1-phenyl-1,3-butadiene. Which would you expect to predominate and why?

6. ## Chemistry

Theres an airplane with a mass of 5.4g, 305. mm long, moving at 1.8m/s. Is it classic or quantum?

7. ## calculus

find the equation of the line tangent to the graph y=3e^x at x=1

8. ## calculus

find the equation of the line tangent to the graph y=3e^x at x=1

9. ## Kinetics Problem I

A reaction has a rate constant of 1.23×10-4 s at 28 degrees C and 0.235 s at 79 degrees C. A: Determine the activation barrier for the reaction. B: What is the value of the rate constant at 15 degrees C?

10. ## Kinetics Problem II

The data below were collected for the following reaction: 2NO2 (g) + F2 (g) ->2NO2F(g) A: Calculate the value of the rate constant, k. B: What is the overall order of the reaction?

11. ## history

from the movie THE PEOPLE SPEAK. -How is that document compared with the Constitution in thE film? -What are some of the ways slaves resisted their status as “property”? What were some of the risks of their actions? -What were some of the ways Native

12. ## chemistry

determine the quantity of heat needed to convert 17.0g of solid mercury at -50.0C to mercury vapor at 25C . Specific heats: , 24.3C , , 28.0C . Melting point of hg, -38.87C . Heat of fusion, 2.33 .

13. ## Topology

5. Find the Cartesian form of the equation, r3 = 3r cosØ.

14. ## Topology

Find the Cartesian form of the equation, r3 = 3r cosØ.

15. ## math

25x^3-55^2-60=

16. ## combustion

A glass melting furnace is burning ethene in pure oxygen (not air). The furnace operates at an equivalence ratio of 0.9 and consumes 30 kmol/hr of ethene. Determine the energy input rate based on the LHV of the fuel in terms of kW. •Determine O2

17. ## Chemistry

Have have 3 general question regrading Analysis of the hardness of water: 1. What is meant by non-zero blank correction in calculating EDTA?(Whats the effects?) 2. EDTA in an experiment was not dry would it effect the EDTA solution? 3. EDTA in an

18. ## math

On a number line, the coordinate of A is -18 and that of B is 18. C is a point on AB such that AC:CB = 4:5. What is the coordinate of C? with solution pls... tnx...

asked by HELP HELP HELP MNHS
19. ## math

If X is a point on the segment joining A(2,-1) and B(9,6), find the coordinates of X if AX:XB = 2:5. with solution pls... tnx...

asked by HELP HELP HELP MNHS
20. ## math

Two equal circles of radius 8cm intersect at X and Y. If the line joining the centers is 12cm long, find the length of XY. with solution pls, tnx...

asked by HELP HELP HELP MNHS
21. ## math

A horse is tied to a post by a rope, 8m long at one corner of a rectangular field. What area of the field can the horse graze? solution pls... tnx...

asked by HELP HELP HELP MNHS
22. ## math

(In this question the answer is -4, please explain how did they get it) If A and B have coordinates -15 and 11, what is the coordinate of X if X is 4 units farther from B as from A?

asked by HELP HELP HELP MNHS
23. ## Math

a man borrowed \$85,000 of wich he pays a part of at 9% interest and the rest at 12% if his total interest payment is \$9300 per year how much did he borrow at each rate of interest ?

24. ## Chemistry

Assume the solubility of benzoic acid in ice-cold water is 1.70 g/L and the solubility of benzoic acid in hot water is 68.0 g/L. Calculate the minimum volume of water (in mL) needed to recrystallize 0.350 g of benzoic acid.

25. ## chemistry

Consider Ba (NO₃)₂ + K₂SO₄ → BaSO₄ + 2KNO₃ (0.10 M) (0.10 M) (10.0 mL) (20.0 mL) Will the K₂SO₄ be sufficient to precipitate all the Ba⁺² ions in the Ba (NO₃)₂? Use Stoichiometry to answer this question.

26. ## mechanics

a car moved at 15m/s for two minutes.after which it moved at 18m/s for 45secods.calculate the average velocity of the car?

27. ## Math

Explain It Tamara says that 15/3=5. Is she correct? Explain

28. ## mechanics

a stone is dropped from a cliff 200m high.if a second stone is thrown verticall upwards 1.50seconds after the first was released.strike the cliff base at the same instant as the first stone.with what velocity was the second stone thrown

29. ## math

i am a 4 digit number. the sum of my digit is same as the product of my digits, who am i?

30. ## chemistry help plz

Using the melting temperature given as guidance, state the type of bonding involved between the elements in aluminium sulfide (Al2S3). Explain how this bonding takes place with respect to the valence electrons.

31. ## mechanics

a soccer player kicked a ball at an angle of 37degree to the horizontal.if the range covered by the ball is 240.3m calculate (a).the initial velocity of projection(.b).the time of flight.(c).the maximum time attained

32. ## Mental Maths

i am a 4 digit number. the sum of my digit is same as the product of my digits, who am i?

33. ## Math

if jan has 7 stickers and her brother gives her 6 more how many does she have in total? which double fact can you use to figure out how many stickers she has

34. ## Math

Having trouble with a statistics question. If you have 2 groups..group A and group B and Group A's times in seconds are 3, 7, 8, 25, 132, and 132 and Group B's times are 2,3, 5,7,23,33,40, 44, 46, 51, 70, 125, and 134...which group overall found the hidden

35. ## maths

in an election .there were only two candidates. the winner was polled 53% votes and won by 9600 votes. find the total no. of votes polled.

36. ## maths

if 8 labourers can earn rs.9000 in 15 days.how many laboures can earn rs. 6300 in 7 days?

37. ## Computer Studies

Write a pseudocode to input 10 temperatures per day for 20 days and output the average per day and average for the 20 days.

38. ## literature

The most basic purpose of reading? A. getting information B. acquiring insight C. providing entertainment D. education I picked D

39. ## algebra

Dyan is 20 years old. Dyan is twice as old as Jean was when Lynne is as old as Jean is now. How old is Jean?

40. ## math-followup

A bag got mix up 6 pairs of shoes – 2 red, 2 blue, and 2 purple. Picking randomly in the dark, how many shoes must I pick before for sure that there is one matching pair in red or blue? Ms Sue answered 4. Request for explanation please. math - Ms. Sue,

41. ## philosophy

I am suppose to write a paper on ethical dilemma.I was thinking about writing about a woman who works in retail sales and a customer gives her to much change. I was thinking that would be an ethical dilemma. I was wondering what anybody thinks. I really

42. ## algebra

What happens when smog lifts in los angeles, california?

43. ## physics

Bob and Bob Jr. stand at open doorways at opposite ends of an airplane hangar 25 m long. Anna owns a spaceship, 40 m long as it sits on the runway. Anna takes off in her spaceship, then swoops through the hangar at constant velocity. At precisely time zero

44. ## Physics

While sitting in class your body exerts a force of 600 N on your chair. how much work did you do?

45. ## music

name and define three rhythmic elements that composers could use in their composition. Show how each would affect the overall sound of the composition? thank you

46. ## algebra

Find the horizontal asymptote of the graph of y=-4x^6+6x+3 / 8x^6+9x+3 please explain i think there is no horizontal asymptote

47. ## algebra

Simplify the rational expression state any restrictions on the variable t^2+2t-24 / t^2-36 I got t-4 / t-6, but Im not sure of the restrictions whether its 6 or -6,6

48. ## Springfield

Given the fact that there is no national religion in the United States, what application do the ethics of religious testaments have on the average American criminal justice practitioner?

49. ## algebra

What is the product in simpliest form state any restrictions on the variable x^2+7x+10 / x+3 times x^2-3x-18 / x^2+x+2 I got (x+5)(x-6) / x-1, not sure on restrictions either 1 or -3,-2, and 1

50. ## math

24/3 is equal to what fraction, with a 1 on the bottom. 24/3=n/1

51. ## penn foster

im trying to finish these classes soon so i can start college, but honestly they are too complex. and i NEED HELP!!!! I have 1-5 done. 6. In the Mongol Empire, the plague A. provided new oppurtunities for territorial expansion B.ended further expansion C.

52. ## Chemistry

calculate the 0.4M molarity of ammonia From data given, how to prepare 200ml of 0.4M ammonia solution 25%. From previous study, i found that the calculation is M1V1=M2V2 From formula, Initial concentration (M1)is 910000mg/L, vOlume of beaker (V2)=200ml,

53. ## Law

I need to pick a current event from 2010-2013 that involves a law. Can you help me?

54. ## Physics

During a brown-out, the electric power company drops the voltage of the power line and the incandescent light bulbs in your house become dimmer. When this happens, the filaments in the bulbs operate at a lower than normal temperature, so a. their color is

55. ## Physics

Two forces are applied to a car in an effort to move it, as shown in the following figure, where F1 = 433 N and F2 = 354 N. (Assume up and to the right as positive directions.) F1 is 10 degrees west of the y axis, F2 is 30 degrees east of the y axis.

56. ## Raptor from loop quetion

display table of 2,in the form of 2*1=2

57. ## Math

The 1989 World Series San Francisco quake was initially reported to have magnitude 7.0, but later this was revised to 7.1. How much energy released corresponds to this increase in magnitude? (Round your answer to two decimal places.)

58. ## history

3. Among members of George Washington's cabinet, __________ had a pessimistic view of human nature and a dread of democratic excess. A. Hamilton B. Adams C. Jefferson D. Marshall

59. ## Physics

Two identical tuning forks have frequencies of 512 Hz. If one is held by a listener while the other approaches at a speed of 7.2 m/s, what does the listener hear?

60. ## Physics

Write an expression for the standing wave produced by adding the two waves (2.5 cm)sin[(3.0 m-1)x - (27 s-1 )t] and (2.5 cm)sin[(3.0 m-1)x + (27 s-1)t].

61. ## Physics

If the seventh and fourth standing wave frequencies of a string differ by 144 Hz, what is the fundamental frequency of the string?

62. ## Algebra

Which value of x is the solution of the equation 1/7 + 2x/3 = (15x-3)/(21) ? (Those are fractions) (1) 6 (2) 0 (3) 4/13 (4) 6/29

63. ## Physics

Air is vibrating in a tube (closed at both ends) at its fundamental frequency of 160 Hz. If the tube is filled with helium instead, what is its fundamental frequency? Use 1020 m/s for the speed of sound in helium.

64. ## physics

A body is executing s.h.m. of amplitude 1m .Its velocity while passing through the mean position is 10m/s.Find its frequency.

65. ## physics

For 3 vectors, find the magnitude and direction of the vector D=A-B+3C. A of length 6.2 and pointing 52 degrees up from the negative x-axis B of length 6.6 and pointing 27 degrees up from the positive x-axis C of length 2.8 and pointing 57 degrees down

66. ## Math 6th grade

What is the largest fraction that can be made out of these numbers? 4,7,9

67. ## physics

A hiker starts at his camp and moves the following distances while exploring his surroundings: 70.0m north, 2.75 x 10^2m east, 130m at an angle 30.0 degrees north of east, and 1.50 x 10^2m south. a.) find his resultant displacement from camp. (take east as

68. ## 4th grade math

In helping my 4th grade grandson last night with his math, he had problems like this 93 * 18. I asked what the asterisk meant and he said the teacher said to "figure it out"

69. ## Physics / Heat Transfer

How much heat must be removed from a 200 g block of copper to lower its temperature from 302 oF to 68 oF? Specific heat of copper: c = 0.092 kcal/(kg K) a. 2.4 kcal b. 2400 kcal c. 18.4 kcal d. 12 kcal e. 26 kcal

70. ## physics

a ball is dropped from the top of a 5m tall building. what is the velocity when it hits the ground?

asked by lola lopez
71. ## MAth

Three servers work a party of 30 guests with a meal total of \$660.00. Restaurant policy adds a 15% gratuity to the bill for parties of 8 or more. If bartenders receive 15% of the gratuity, bussers receive 20%, and the rest goes to the servers, how much

asked by Chris T
72. ## english

One of the following sentences contains an independent clause and a dependent clause, which makes it a complex sentence. Which is the complex sentence? A. I hesitated a moment, but her smile gave me courage. B. I came home; I saw an envelope in the

73. ## Physics

A book weighs 4N. When held at REST in your hands, the Net Forceon the book is? 0N 0.4N 39N Or none of the above?

asked by lola lopez
74. ## English

Primal fear is thriller, crime, mystery movie. The film is set in the courtroom and church the City of Chicago in the year 1990’s. The movie is directed by Gregory Hoblit and this was his first theatrical film released. The movie is an adaptation of

75. ## maths

A manufacturer lists the price of the goods at Rs.240 per article. The wholesaler gets a discount of 25% on the goods from the manufacturer. The retailers are allowed a discount of 15% on the list price by the wholesaler. The prescribe rate of sale tax at

76. ## english

One of the following sentences contains an independent clause and a dependent clause, which makes it a complex sentence. Which is the complex sentence? A. I hesitated a moment, but her smile gave me courage. B. I came home; I saw an envelope in the

77. ## calculus

Find a value c in the interval [0,2] such that f(c)is equal to the average value.

78. ## chem

How many moles of Ca(OH)2 are produced when 9.19 grams of CaH2 and 7.90 grams of H2O react ?

79. ## Calculus

The base of a certain solid is the triangle with vertices at (-14,7),(7,7) and the origin. Cross-sections perpendicular to the y-axis are squares. What is the volume of this solid?

80. ## physics

A student driving at a constant speed of 45 m/sec passes a highway patrol car parked on the side of the road. One second later, the patrol car accelerates at a constant rate of 3.00 m/sec^2 in an attempt to catch up with the speeding student. How long does

81. ## calculus

In a certain city the temperature (in degrees Fahrenheit) t hours after 9am was approximated by the function: T(t)= 70 + 19sin((pi*t)/12). What is the temperature at 3 pm?

82. ## calculus

As viewed from above, a swimming pool has the shape of the ellipse given by (x^2/3600)+(y^2/1600)= 1 The cross sections perpendicular to the ground and parallel to the y-axis are squares. Find the total volume of the pool.

83. ## chemistry

4 P + 5 O2 ==> P4O10 If you have 24.98 grams of P and 74.99 grams of O2, how many moles of each compound do you have present?

84. ## english

How could you combine the following two sentences into a complex sentence with a dependent adjectival clause? The boy wore a green coat. He carried his sister home. A. The boy who wore a green coat carried his sister home. B. The boy wore a green coat, and

85. ## math

IF 81 PEOPLE NEED TO TAKE A TEST, BUT ONLY 13 HAVE ACTUALLY TAKEN TEST, WHAT IS THE PERCENTAGE OF PEOPLE WHO HAVE TAKEN TEST?

86. ## enlish

A restrictive clause is one that A. should be set off by commas. B. functions as an adverb. C. usually occurs at the beginning of a sentence. D. limits the meaning of the word it describes. ..D?

87. ## MATH

1. Does the table represent an exponential function? Does the table represent an exponential function? X 1,2,3,4 Y -1,-8,-27,-64 yes? no?

Kevin needs to convert 620 millimeters per minute to meters per hour. Which conversion factors should he use? A. 0.001m/1mm and 1h/60min B. 0.001m/1mm and 60min/1h C. 1mm/0.001m and 1h/60min D. 1mm/0.001m and 60min/1h PLEASE HELP!!!!

89. ## English and Grammar

Primal fear is thriller, crime, mystery movie. The film is set in the courtroom and church the City of Chicago in the year 1990’s. The movie is directed by Gregory Hoblit and this was his first theatrical film released. The movie is an adaptation of

90. ## english

What is the simple predicate of the following sentence? The Saturn rocket made travel to the moon possible. A. Moon B. Made C. Possible D. Travel .. B? Which sentence uses correct parallel construction? A. Anyone who is going to work here will have to be

91. ## MATH PLEASE im begging HELP!!!!!

What is 900 feet per day converted into yards per hour? A. 12.5 yards per hour B. 37.5 yards per hour C. 112.5 yards per hour D. 7200 yards per hour

92. ## Spanish: please tell me what this says

que haces este el jueves? Estudio y ver la television. Que haces el martes? Escuela trabajar y jugar baloncesto. Que haces el sabado? Dormir y relajarse. Thank You

93. ## english

A split infinitive is an infinitive that A. has a word between "to" and the verb. B. is used as an adjective or a noun. C. is used without the word "to." D. must have a subject ..A? Each one of the following sentences contains a clause. In which sentence

Daniel is climbing up a cliff at a rate of 2 meters per minute. What is his rate in feet per hour? A. about 36.6 feet per hour B. about 98.4 feet per hour C. about 197 feet per hour D. about 394 feet per hour

asked by Mary J.

Daniel is climbing up a cliff at a rate of 2 meters per minute. What is his rate in feet per hour? A. about 36.6 feet per hour B. about 98.4 feet per hour C. about 197 feet per hour D. about 394 feet per hour

asked by Mary J.
96. ## Chemistry

You carry out an exothermic reaction inside a Styrofoam cup calorimeter, using a temperature probe to monitor the temperature throughout the reaction. You find that the temperature increases 7.40 °C during the reaction. The specific heat of the reaction

97. ## Math

What is 9 kilometers per hour converted into feet per minute? A. about 1.77 feet per minute B. about 45.7 feet per minute C. about 492 feet per minute D. about 29,520 feet per minute

asked by sara m. baker
98. ## english

Which sentence uses correct parallel construction? A. Anyone who is going to work here will have to be athletic, an intelligent person, and have a good sense of humor. B. Most people enjoy ice cream and the plant grows. C. The painter wore glasses, gloves,

99. ## Geography

What is the name of the salt lake located on the border between Israel and Jordan? I think the answer is the Dead Sea, is that right?

100. ## physics

If two charges are a distance R apart from eachother and their force is F, what will the force be if they are moved apart to a distance of 2R?

101. ## Psychology

I need help. Not sure if my answers are correct. 1. complete the analogy: infrared is to ultraviolet as; a. white is to red b. fast is to slow c. slow is to fast d. red is to white 2. which of the following best describes why we perceive reversible

102. ## science

An automobile is pulled by a horizontal tow line, with a force of 900 N. If its acceleration is 1.0 m/s2, calculate the mass of the automobile.

103. ## science

A force of 3.0 N is applied to an 8.0 gram rifle bullet. What is the bullet’s acceleration?

104. ## science

What is the weight in Newtons of a 300 gram box of breakfast cereal?

105. ## Organic Chemistry 2

Hello, I have two questions Why is simple distillation useful in isolating pure isopentyl acetate? How do you predict the major peaks that would be observed in a isopentyl alcohol and isopentyl acetate infrared spectra?

106. ## Algebra 1- Math

Kari has 16 coins scattered on her bed with total value of \$1.05. If the coins are all nickels and dimes, how many of each does she have

107. ## Algebra 1- Math

Rodney has \$3.10 in nickels and dimes. He has fewer than he has dimes. How many of each does he have?

108. ## Algebra 1- Math

The owner of a pet store spent \$236 on 10 dogs and cats. The cats cost &18 each and the dogs cost &26 each. How many of each did the owner buy? Mrs. Sue Please help or any other person

asked by Anonymous- Mrs Sue pleasse
109. ## algebra

what is the quotient in simpliest form state the restrictions on the variable z^2-4/z-3 divided z+2/z^2+z-12 i got z^2+2x-8 but am not sure of the restrictions maybe 3,-2

110. ## algebra

compare the graphs of the inverse variations by comparing asymptotes, similar points, lines of reflections and quadrants y=-0.7/x and y=-0.9/x

111. ## algebra(help)

The amount of money, in dollars, raised each year by a student club can be estimated by the function f(x)=150x-240,000 where x is the year with 2000

112. ## nicole

1. determine the exact value.. cot 7pi/6 and sec(-210degrees) 2. determine approximate measure of all angels that satisfy following, and draw a sketch to show the quadrants involved cosTHETA = -0.77, -pi lessOr same than theta less than pi and

113. ## Math (probability)

Three members of a 12 person singing group are going to be chosen to sing a song in their coming concert. A) how many different groups containing 3 people can be chosen from the 12 members of the singing group? B) what Is the probability that mike and Jo

114. ## Calculus

Given f(x)=x+sqrt(x) calculate the tangent line at the point (9,12) y=___?__(x-9)+12

115. ## Calculus

Let f(x)=[5x^(1/4)]*[(x^3)-10] evaluate f'(x) at the following points: a) f'(3) b) f'(5)

116. ## Calculus

Let f(x)= 6x+(4/x^2). Then the equation of the tangent line to the graph f(x) at the point (2,13) is give by y=mx+b What is m? What is b?

117. ## Calculus

If f(x)=sqrt(14x) a)find f' (x) b) find f'(4)

118. ## Calculus

If f(x)=[(6x^3)-3]/x^4 a)find f' (x) b) find f'(4)

119. ## Algebra 2

How do the graphs of y=1/x and y=5/x+6 compare?

120. ## computers

what are calculations entered into a spreadsheet called is it formulas or values i think formulas am i correct?

121. ## Algebra 1- Math

An athletic director is ordering balls for two softball leagues. The 10 year old league uses an 11-inch softball priced at \$2.75. The 12 year old league uses a 12-inch softball priced at \$3.25. The bill smeared in the rain, but he remembered ordering 80

122. ## S.S

5. How did western settlement help improve the nation’s economy? The number of people searching for gold increased, thus increasing the amount of gold in the United States. The number of people looking for nonfactory jobs increased, thus increasing the

123. ## math

38% of the amount in keith's savings is \$350. how much money does kieth have in his savings? go step by step

124. ## health information law and ethics

Can someone help with a thesis on health care fraud and abuse?

125. ## algebra

A photo studio offers portraits in 8x10 and wallet-sized formats. One customer bought two 8x10 portraits and four wallet-sized portraits and paid \$52. Another customer bought three 8x10 portraits and two wallet sized portraits and paid \$50. What is the

126. ## Ohio Christian University

Find the area of the rectangular piece of glass in the Norman window pictured

127. ## math

what is 4t=24?

128. ## Calculus

A square sheet of cardboard with a side 16 inches is used to make an open box by cutting squares of equal size from the four corners and folding up the sides. What size squares should be cut from the corners to obtain a box with largest possible volume?

129. ## Calculus

At a certain instant, each edge of a cube is 5 inches long and the volume is increasing at the rate of 2 cubic inches per minute. How fast is the surface area of the cube increasing?

130. ## math

what is the buoyant force acting on a can that is .75 lbs with dimension of 2.5 inches x 5 inches

131. ## chemistry final step

If you have 24.98 grams of P and 74.99 grams of O2, how many moles of each compound do you have present? so I got .805 of P (limiting) and 2.343 O2 (excess) how do i do this step ? If you have 24.98 grams of P and 74.99 grams of O2, how many moles of each

132. ## retail pharmacy assistant successful selling

an effective way to handle a tired and cross customer is to a.ask the customer what is wrong b.remain perfectly still c.remain pleasant and cheerful d.calm the customer with your calmness my answer is c the ultimate moment of the sales presentation is

133. ## English

1. Which of the key reading skills for reading informational articles involves looking for key words and phrases in a text before reading the text? A. identifying main idea and supporting details B. previewing C. skimming and scanning D. understanding text

134. ## math

susan has \$450. she uses 30% of her money to but a dress and 20% of the remainder to buy a pair of shoes. how much money does she have left? i got \$225.00 left. am i right

135. ## math8

-4x+15=-5x how do you do it

136. ## Engl

2. Read the following paragraph from “A Tremendous Trade”: It might not seem fair, but in every profession, workers earn whatever people are willing to pay them. Baseball is no exception. Teams compete to offer as much money as they can to players who

137. ## math

find two point the perpendicular bisector of line AB. verify your results by showing each point is equidistant from A and B. A(3,0) B (1,4)

138. ## math

1/2(8x+12)=10 and 1.2x+4.3=9.1

139. ## Math

Gina cut a piece of ribbon into 3 equal pieces. Then she cut off 2 inches off one piece to make it 3 inches. How long was the original piece of ribbon?

140. ## math

what is 12+33?

141. ## Finance

A thirty-year U.S. Treasury bond has a 4.0 percent interest rate. In contrast, a ten-year Treasury bond has an interest rate of 3.7 percent. If inflation is expected to average 1.5 percentage points over both the next ten years and thirty years, determine

142. ## Math

At 3 o,clok, the area between the hour and minute hands represent 1/4 of the clockface.What times would represent 1/2 and 1/3 of the clockface?

143. ## Finance

You are considering an investment in a one-year government debt security with a yield of 5 percent or a highly liquid corporate debt security with a yield of 6.5 percent. The expected inflation rate for the next year is expected to be 2.5 percent. A. What

144. ## Cultural Anthropology

To what extent and in what ways have the Minangkabau succeeded in resolving the opposition between Adat and Islam? Is this a point of instability for the culture?

145. ## Finance

A Treasury note with a maturity of four years carries a nominal rate of interest of 10 percent. In contrast, an eight-year Treasury bond has a yield of 8 percent. A. If inflation is expected to average 7 percent over the first four years, what is the

146. ## Physics

A meteoroid is speeding through the atmosphere, traveling east at 19.0 km/s while descending at a rate of 12.9 km/s. What is its speed, in km/s?

147. ## Physics

A 123 g cube of ice at 0◦C is dropped into 1.9 kg of water that was originally at 81◦C. What is the final temperature of the water after after the ice melts? The latent heat of fusion of water is 3.33 × 105 J/kg . Answer in units of ◦C

148. ## Physics

In a football game a kicker attempts a field goal. The ball remains in contact with the kicker's foot for 0.050 s, during which time it experiences an acceleration of 390 m/s2. The ball is launched at an angle of 46° above the ground. Determine the

149. ## algebra

I need to graph f(x)=-2x Does it go, through -2 and y side of 2?

150. ## health information law and ethics

Would this be a good thesis for- types of fraud and abuse, what are the effects in health care?

151. ## ss pls check answers

8. “…With the existing colonies or dependencies of any European power we have not interfered and shall not interfere. But with the Governments who have declared their independence and maintained it, and whose independence we have, on great

152. ## math

x-11 i don't think that's right though

153. ## Math!!!

I have a input output table and I can't figure out the rule here is the chart X. Y _______________ 1. | 3 4. | 7 7. | 11 Can u figure it out I'm having a really hard time with this problem!!!!

154. ## math

Posted by Ted on Wednesday, January 30, 2013 at 5:05pm. susan has \$450. she uses 30% of her money to but a dress and 20% of the remainder to buy a pair of shoes. how much money does she have left? i got \$225.00 left. am i right math - Ms. Sue, Wednesday,

155. ## History

I can't seem to find the answer anywhere. Please help. 2. What is the shape of the water molecule? A.) linear B.) tetrahedral C.) trigonal planer D.) bent

156. ## statistics

entify the data set's level of measurement. gender profile of the 111th congress average january snowfall for 15 cities

157. ## Physics ~Work Kinetic Energy~

1.)A ball (m 0.5 kg) starts from rest and has 300 J(joule) of work applied to it. a) what is the initial kinetic energy of the ball? b) what is the final kinetic of the ball? c) what is the final velocity of the ball? 2.)A boy is doing chin-up. If the boy

158. ## math

A set of integers has a sum of 420, and an average of 60. If one of the integers in the set is 120, what is average of the remaining integers in the set?

159. ## math

a frame with a 19"permitter and 2"wide what is the length of this frame and what is the area.

160. ## math

a frame with a 19"permitter and 2"wide what is the length of this frame and what is the area.

161. ## Math

Estimate each sum and difference. 3 1/4 + 2 5/6 5 6/9 - 1 3/4 5 5/13 + 8 3/5 11 - 6 3/7 + 2 2/5

162. ## apchemistry

The numerical value of the concentration equilibrium constant for the gaseous reaction 2 SO2 + O2 *) 2 SO3 is 0.5 at temperature T. When a reactionmix- ture is brought to equilibrium, [O2] is found to be 2.0 M and [SO3] is found to be 10 M. What is the

163. ## Social Studies

Which area of Mexico is almost entirely at sea land? Yuacatan Peninsula? What is The name given given to the mountain range that covers most of mexico Sierra Madre Occidental

164. ## chemistry

disappearance of NO in ...- Help!!!? The following data were collected for the rate of disappearance of NO in the reaction 2 NO(g) + O2(g) ¨ 2 NO2(g). Run: [NO](M) [O2](M) Initail Rate (M/s) 1 .0126 .0125 1.41 X 10^-2 2 .0252 .0125 5.64 X 10^-2 3 .0252

165. ## Math

Ron painted part of a tiled section of his bathroom floor. the whole section was shaped like a rectangle. There were 35 square tiles in the section. How many tiles were in each row?

166. ## Chemistry

Sample has 150 grams, 20 mL, and a density of 7.5 g/mL. If I double my sample size what would those values turn into?

167. ## Math

Estimate each sum and difference. 3 1/4 + 2 5/6 5 6/9 - 1 3/4 5 5/13 + 8 3/5 11 - 6 3/7 + 2 2/5

168. ## Physics ~Conservation of Energy~

1.) At one point in its fall, an object (m=2.5 kg.) has a kinetic energy of 5 J(joule) and a potential energy of 10 J. a) what is the total energy of the system? b) what is the velocity at this point? The object continues to another point where its

169. ## Physics

How much energy is required to change a 58 g ice cube from ice at −1◦C to steam at 101◦C? The specific heat of ice is 2090 J/kg ·◦ C and of water 4186 J/kg ·◦ C. The latent heat of fusion of water is 3.33 × 105 J/kg, its latent heat of

170. ## Physics

You have collected exactly 2800 aluminum cans for recycling, each with a mass of 13.6 g. How much energy is needed to melt them if their initial temperature is 26.2◦C? Assume the specific heat, the latent heat and the melting point of aluminum are 899

171. ## english

Howard likes birds. simile or not simile?

172. ## general chemistry

A reaction involves fictional reagents A & B is begun with the inital concentration of 0.05M A and 0.01M B. The reaction reaches completion in 16 seconds. What is the initial rate of the reaction in respect to A? and what is the order in respect to B

173. ## Physics (As Level) 12 Grade

2) An aircraft lands on a runway at a speed of 40 meters per second (ms^-1) and brakes to a halt in a distance of 860m. Calculate a) The Braking time. B) The deceleration of the aircraft.

174. ## Chemistry

Calories of heat absorbed by water = (Mass undergoing change)(Change in temp.)How much heat is needed to warm 125 g. of water from 25 degrees Celsius to 100 degrees Celsius. Thank you very much!

asked by Larissa Jenkinson III
175. ## Math

Use a double or half angle identity to find the exact value of the following expression: if cos x= 4/5 and 270° < x < 360°, find sin 2x Please help! Thanks

176. ## Physics ~Conservation of Energy~ part 2

1.) A 500 kg roller coaster is pulled to the top of a hill 45 m high and arrives at the top with a zero speed. a) how much work has done by the vhain to pull the car to the top? b) how much potential energy does it have at the top? c)What is the total

177. ## H. CHemistry

if the atmosphere can support a column of mercury 760 mm high at sea level, what height of a hypothetical liquid whose density is 1.40 times the density of mercury could supported?

178. ## algebra

f(x)=x+4 is the answer (x+4)=0 x=4

179. ## chemistry

the helium in a 1.5L flask at 25degrees celcius exerts a pressure of 56.65kPa. How many moles of helium are in the flask?

180. ## Math

Ms. Quon discovered that 40 students liked soccer, 20 liked basketball, 10 liked football, and 5 liked swimming. How many times as many students liked basketball as football? Soccer as football?

181. ## Physics

Calculate the kinetic energy that the earth has because of (a) its rotation about its own axis and (b) its motion around the sun. Assume that the earth is a uniform sphere and that its path around the sun is circular. For comparison, the total energy used

182. ## Chemistry

How much heat energy, in kilojoules, is required to convert 36.0g of ice at 18.0C to water at 25.0C

183. ## Social Studies

what Continent is Central america and the caribbean islands is considered to be part of north america?

184. ## Geometry

You are given the cordinates of the four points A (6,2), B(2.4), C (-6, -2) and D (-2,-4). Show that the equation of the line DA is 4y-3x = -10 help please!!

185. ## Science

If ______ amounts of hot and cold water are mixed, the final temperature will b the _______ of the two _______ (beginning) temperatures.

186. ## Math

If Julie needs 3 1/4 cups of oatmeal, how many 1/4 cups oatmeal will shw use?

187. ## ap chemistry

The system CO2(g) + H2(g) *) H2O(g) + CO(g) is at equilibrium at some temperature. At equilibrium a 4.00 L vessel contains 1.00 mole CO2, 1.00 mole H2, 2.40 moles H2O, and 2.40 moles CO. How many moles of CO2 must be added to the system to bring the

188. ## edu

a major goal of any curriculum is to enable children to become a.divergent thinkers b.mature adults c. self- focused d.humanists I think a am i correct

189. ## Math

Ron painted part of a tiled section of his bathroom floor. the whole section was shaped like a rectangle. There were 35 square tiles in the section. How many tiles were in each row? There are 7 rows

190. ## Physics

As a tennis ball is struck, it departs from the racket horizontally with a speed of 28.2 m/s. The ball hits the court at a horizontal distance of 19.5 m from the racket. How far above the court is the tennis ball when it leaves the racket?

191. ## number theory

According to the Journal of Irreproducible Results, any obtuse angle is a right angle! Here is their argument. Given the obtuse angle x, we make a quadrilateral ABCD with DAB = x, and ABC = 90◦, andAD = BC. Say the perpendicular bisector toDC meets the

192. ## business math

you deposit \$1000 for 4 years at an interest rate of 2% if the interest is compounded quarterly how much would you have at the end of the fours years

193. ## Math

A 12LB ham contains 45 servings of meat. What is the rate in serving per pound?

194. ## Algebra

The sum of two numbers is 19, and their difference is 55. What are the two numbers? Solving systems using elimination

195. ## math

Two similar rectangular gardens have a ratio of 2:3. If one side of the larger garden is 18 feet, how long is the corresponding side of the smaller garden?

196. ## Algebra

X-2y=-1 2x+y=4 solve each system using elimination. Tell whether the system has one solution, many solutions, or no solution.

197. ## Government

What was a major consequence of the decline and fall of the Roman Empire? A. the beginning of world trade B. an end to city-states C. the end of democracy D. the collapse of organized government I really think it's D but not sure..

198. ## Math

An open box is made from a square piece of metal by cutting out a 4 inch square from each corner and turning up the sides. Find the area of the original square if the box is to contain: A) 16 cubic inches And B) 400 cubic inches

199. ## Math

5x-6 = 2x+12 It says x=3 but I don't understand how, can you you explain the steps for me?

200. ## algebra

Find the domain of the following: f(x)=x+4 so x is the domain so would the answer be -4?

201. ## HELPPPP

A______ is something a producer can do for a consumer I have no clue please help

202. ## Math

Some syrup spilled on a checkerboard style table. The syrup covered some of the tiles. There were 36 squares on the table. How many of the squares had syrup on them?

203. ## Math

Dress rehearsal of the play was attended by 142 people. Opening night was attended by 238 people. How many people saw the two shows in all?

204. ## Calculus

Use the disk method to find the volume of the solid formed by rotating the region bounded by y=2x and y=x^2 about the y-axis.

205. ## neckles

Neckles stamped with an c on an crown on top of the c can some one maybe tel me what is the meaning

206. ## Statistics

If the standard deviation of a sample is 4.3 for 28 data values, what would the standard deviation be fore the population from which the sample was drawn?

207. ## calculus

Find the area of region bounded by the curves y=sin(pi/2*x)and y=x^2-2x.

208. ## Algebra

For the fundraiser, will sold 225 candy bars.he earns \$1 for each almond candy bar he sells and \$0.75, how many of each type of candy bar did he sell for the fundraiser? solving systems using elimination

209. ## math

Eight friends share three pizzas. How much pizza will each friend get? Explain your thinking words, numbers and models.

210. ## 7th grade math

what is the function of the following table: a tree that has a height of 12 feet will have a shadow of 10 feet

211. ## math

\$12000 at 6% compounded semiannually what is value after 21 yrs?

212. ## Algebra

2x+y=-5 3x-y=-10 solve system using elimination

213. ## Physics

A crate of mass 59 kg is attached to one end of a string, and the other end of the string runs over a pulley and is held by a person as in the figure below. If the person pulls with a force of 94 N, what is the crate's acceleration?

214. ## math

is 1/2 and 3/8 like fractions

215. ## Physics

A drag racer, starting from rest, speeds up for 393 m with an acceleration of +16.3 m/s2. A parachute then opens, slowing the car down with an acceleration of -5.51 m/s2. How fast is the racer moving 3.31E+2 m after the parachute opens?

216. ## History

Answers: 1.)D 4.)C 1. In China’s civil war, the United States backed the Communists, led by Jiang Jieshi. the Communists, led by Mao Zedong. the Nationalists, led by Mao Zedong. the Nationalists, led by Jiang Jieshi. 4. What was one place on the globe

217. ## Geometry

The points A,B,C,D have coordinates (3,3) (8,0) (-1,1) (-6,4) respectively. Find the coordinates of the point of intersection of the diagonals AC and BD? Help plZ!!!

218. ## Physics

A drag racer, starting from rest, speeds up for 393 m with an acceleration of +16.3 m/s2. A parachute then opens, slowing the car down with an acceleration of -5.51 m/s2. How fast is the racer moving 3.31E+2 m after the parachute opens?

219. ## How to Plug these values into the Arrhenius Formul

A reaction has a rate constant of 1.23×10-4 s at 28 degrees C and 0.235 s at 79 degrees C. A: Determine the activation barrier for the reaction. B: What is the value of the rate constant at 15 degrees C? ------------- I know that I need to use the

220. ## Biology

What is a cross between plants that involves one characteristic called

221. ## Math

On a map, 3in. represents 12mi. If two roads are 1.25 in. apart on the map, how far apart are they in reality?

222. ## Arrhenius Question

The activation energy of a certain reaction is 32.9 kJ/mol At 25 degrees C the rate constant is 0.0160 units s-1 units. At what temperature in degrees Celsius would this reaction go twice as fast? Given that the initial rate constant is 0.0160 s-1 at an

223. ## Algebra

Rational Expressions: I'll do my best to type the following correctly: x-5+ 14/x+4 divided by x+3- 2/x+4 Simplify, Step by step Please!

224. ## Math

You have 3 equilateral🔻🔻🔻. You must move one to make 5 triangles.

225. ## math

sue had \$5.65 worth of quarters and dimes. she had 3 more quarters than she had dimes. how many quarters does she have? how many dimes does she have?

226. ## physics

How long does it take light to travel through a 3.3 mm-thick piece of window glass?

At 3 o,clok, the area between the hour and minute hands represent 1/4 of the clockface.What times would represent 1/2 and 1/3 of the clockface?

228. ## math

marty ate 4/6 of his pizza and luis ate 5/6 of his pizza. marty ate more pizza than luis. how is this possible?

229. ## physics

A particle has a charge of +2.2 μC and moves from point A to point B, a distance of 0.16 m. The particle experiences a constant electric force, and its motion is along the line of action of the force. The difference between the particle's electric

230. ## Science

How do you find the hours of daylight ?

231. ## math

bob decided use a poster to make a collage for his social studies project he filled 3/8 of his collage with pictures representing her culture and 1/3 of the collage with pictures representing her interests how much room is left on the whole poster board

232. ## economics

The country of Arkanslavia had money supplies of 183 million arkollars in 2010 and 644 million in 2011. They have real output of 791 arkollars in both years. In Arkanslavia velocity was 7 in 2010 but changed to 5 in 2011. What is the difference in the

233. ## Chemisty

Determine how many calories are need to heat 30 grams of water from 10 degrees C to 30 degrees C

234. ## Algebra

Ms. Jones has two job offers as a car salesperson. At one dealership, she will receive \$600 per month plus a commission of 2% of the total price of the automobiles she sells. At the other dealership, she will receive \$1000 per month plus a commission of

235. ## Math

Power reducing formulas can be used to rewrite 8sin^2 x cos^2 x as 1 - cos4x True? Thanks

236. ## Math 8 HELP!

Multi-Step Equations Systems of Equations y = 2x - 4 y = x - 1 please help!!! :'(

237. ## math

How much interest would a person have to pay on a \$3250 loan at 5% for three years??

238. ## science

If I put a note card with words on it behind a jar of water why does part of the note card little different from the rest of the note card?

239. ## math

Two similar rectangular gardens have a ratio of 2:3. If one side of the larger garden is 18 feet, how long is the corresponding side of the smaller garden?

240. ## geometry

Papa's Pizza charges \$0.05 per square inch of pizza. Pizza is measured by the diameter. How much will pap's Pizza charge for a 7-inch, 10-inch, and 14-inch pizza? From your results, do you think this is how the p rice of pizza is determined? Explain.

241. ## pROBABILITY AND STATISTIC..HELP...................

A small store installed a diesel-powered generator for emergency power outage because they function independently of electric power. The past history of the town indicates that on about 5% of days during summer the town loses electricity due to high winds.

242. ## MATH 8 HELP!

Y = -x + 10 y = x + 2

243. ## Government

Who holds the decision-making power in a communist-run nation? A. the nation’s president B. the voters C. the Communist Party D. an elected legislature I would go for C, but not sure, might be A too.. thanks!

244. ## physical science

push a box across a tablewith a force of 5 newtons and the box moves 0.5 meters. how much work is been accomplished?

245. ## Math

If secx = -3, and x lies in quadrant II find tan x/2 -√2 or √3/3?

246. ## phys

The ammonia molecule has a dipole moment of . Ammonia molecules in the gas phase are placed in a uniform electric field with magnitude 1.1×106 . What is the change in electric potential energy when the dipole moment of a molecule changes its orientation

247. ## math

what is formula to show how much time it took car to travel 7km is .4hrs

248. ## Chemistry

How many moles of carbon dioxide would be produced if 25 g of copper carbonate were completely decomposed by heating?

249. ## Government

A rebuilt bicycle is worth a certain amount because it takes that much labor to produce it. Who did Marx believe should be compensated for the bicycle? A. The laborer who rebuilt the bicycle should receive the value in full.. B. The laborer and the seller

250. ## math 4 th grade

In which total oes the digit 3 represent 3 tenths? a. 12 quarters, 2 dimes, 3 pennies b. 3 quarters, 5 nickles, 3 pennies c. 2 quarters, 3 dimes, 5 pennies d. 2 quarters, 8 dimes, 5 pennies

251. ## math

fill the sequence 8, 23, 44,74, 116 next two terms of sequence

252. ## algebra

price of sneakers. Amy paid \$102 for a paid of new balance 1122 running shoes during a 15%-off sale. What was the regular price?

253. ## PreCalculus II

perform the indicated operation (3sinx-2)(sinx+1) I need someone who can help me to understand what I am supposed to be doing with this problem, a step by step would be increasingly helpful so that I can apply it to other problems like this.

asked by Amber Lance
254. ## Phyiics

Can u just explain how to do projectile motion and give examples of hroiontal velocityand displacement , verical velocity and displacement

255. ## Latin Help Please

These sentences have something to do with ablative of agent but I cannot figure them out. Quid ab his maleficiis sceleris abesse videtur? What wrong crimes...??? Erunt etiam altera bella atque iterum ad Troiam magnus mittetur Achilles. They were

256. ## Chemisty

If 1 gram of sugar is 4 Calories(kcal) how many calories are in one sugar cube

257. ## Math

an investor invested a total of \$3,100 in two mutual funds. One fund earned a 8% profit where the other earned 5% profit. If the investor's total profit was \$209, how much was invested in each mutual fund?

258. ## algebra

An office supply store sells pens for \$3 and notebooks for \$5. Before school started, the store sold 12 more pens than notebooks and made \$324. Which system of equations could be used to find the number of pens, p, and notebook, n that the store sold that

259. ## physics

a ramp was used to lift 25000kg block. block rose 2m in height traveling 30 m along the ramps surface how much uphill friction is needed to push it up the ramp at constant velocity?

260. ## Algebra

Price of a calculator. Kayla paid \$137.80, including 6% tax, for her graphing calculator. How much did the calculator itself cost?

261. ## Algebra

Price of a printer. Laura paid \$219.45, including 5% tax, for an all-in-one color printer. How much did the printer itself cost?

262. ## Algebra

Unicycling. In 2005, Ken Looi of New Zealand set a record by covering 235.3 mi in 24 hr on his unicycle. After 8 hr, he was approximately twice as far from the finish line as he was from the start. How far had he traveled?

263. ## physics

you drop a marble from rest and after 1 second its velocity is 9.8 in the downward direction-what is the velocity after falling 0.5 secs?

264. ## US History

In what why could the War of 1812 be considered the second American Revolution? Whould you categorize the War of 1812 as a unifying or conflict- including passage of history?

265. ## math

carol works part time at 2 stores she earns 8.25 an hour at the flower shop, and 7.50 at a diner. last week carol earned 63.75. carol worked 5 hours at the flower shop, how many hours did she work at the diner?

266. ## Math

tom has a collection of 50 cds and nita has a collection of 38 cds. Each month tom adds two cds and nita adds four how many months will it take until they have the same amount?

267. ## Chemistry

If the freezing point of pure toluene is -95.15 oC and its freezing point depression constant is -8.38 oC/molal, what is the freezing point of a solution made by dissolving 39.338g of anthracene (C14H10) in 150.0mL of toluene? (Density of toluene =

268. ## Chemistry

An object made of aluminum has a mass of 8.37g. When it was placed in a graduated cylinder containing 20.0ml of water, the water level rose to 23.1ml. Calculate the specific gravity of the object?

269. ## Physics

A vertical spring with a spring constant of 400 N/m is mounted on the floor. From directly above the spring, which is unstrained, a 0.30 kg block is dropped from rest. It collides with and sticks to the spring, which is compressed by 2.3 cm in bringing the

270. ## MATH

the dimension of an aquarium are 20 inchs long ,14 inchs wide, and 18 inches high. if 231 cubic inches of water weighs 1 gallon, how many gallons of water are in the aquarium to the nearest gallon?

271. ## math asap

Purple gel costs 4.86 for 18 oz green gel costs 3 cents more per once how much for the green in a quart size bottle?

272. ## science physic

If a ball rolls down an inclined plane and picks up 4 m/s each second it rolls, its acceleration is

273. ## Biochemistry

Do you add Nacl or HCL if your target buffer pH is 8, and the buffer is HEPES

274. ## physics

On Mars, the acceleration due to gravity is 3.71 m/s2. How far would a rock fall in 3 s if you dropped it on Mars?

275. ## Algebra

The height of a triangle is 8 m more than twice the length of the base. The area of the triangle is 32 m^2. Whats the height of the triangle

276. ## Intermediate Macro Economics

To complete the analysis, Chuck wants to know more about the revenue that he can generate from his farm. The price of corn, p(y), depends on how much Chuck produces. The price function is speci ed as p(y) = 3 0:05y c. The revenue that Chuck can generate

277. ## Physics

The density of a gas at s.t.p is 1.3kg/m3. Find the density of the gas at -15 degree celcius and at a pressure of 8cmHg.

278. ## History help please

In what why could the War of 1812 be considered the second American Revolution? Whould you categorize the War of 1812 as a unifying or conflict- including passage of history?

279. ## Math

Marty ate 1/4 of a pizza. Rob ate 1/5 of a pizza . How could rob eaten more pizza than Marty?

280. ## MATH

hank completed 17 out of 20 passes he threw. what is the experimental probability that hank will NOT complete his next pass?

281. ## social studies

the only people that could vote in colonial new York were ________.

282. ## math

Can this be solved? Jenny has 11 coins in her pocket, all of which are either nickels or dimes. If the value of the coins is 754, how many of each type of coin does she have?

283. ## calculus

Use the disk method to find the volume of the solid formed by rotating the region bounded by y=2x and y=x^2 about the y-axis.

284. ## math

How is this problem solved? It takes Bobby 60 minutes longer to wax the car than it does his brother Kevin. Together it takes them 50 minutes to wax the car. How long does it take each working separately?

285. ## Health

what 2 categories does ecstasy belong to? Name five body organs that can be damaged by drug abuse?

286. ## calculus

Use the shell method to find the volume of the solid formed by rotating the region bounded by y=x^3, y=0, x=0, and x=2 about the line x=3.

287. ## Statistics

Suppose that, in fact, the blood cholesterol level of all men aged 20 to 34 follows the normal distribution with mean of u = 188 milligrams per deciliter (mg/dl) and standard deviation = 41 mg/dl. 1. Choose an SRS of 100 men from this population. What is

288. ## Math/Physics

What is an expression for the standing wave that is produced by adding the two waves (2.5 cm)sin[(3.0 m-1)x - (27 s-1 )t] and (2.5 cm)sin[(3.0 m-1)x + (27 s-1)t]

289. ## college algebrea

(3x)/(x+2)=9-(6)/(x+2)

290. ## General Science

A power boat accelerates along a straight path from 0km/h in 10.0s.Find the average acceleration of the boat in meters per second.

291. ## Math

The sum of the speeds of two trains is 720.5 mph. If the speed of the first train is 3.5 mph faster than the second train, find the speeds of each. Please help? Thanks!

292. ## Physics

If the seventh and fourth standing wave frequencies of a string differ by 144 Hz, what is the fundamental frequency of the string?

293. ## chemistry

what is the volume of a cube that has the following measurements (length 20.0 cm, width 152 mm, height 0.458 m)

294. ## math

Purple gel is\$ 4.86 for 18 oz green gel is 3 cents more per oz how much for the green gel in a quart size bottle?

295. ## Math

An airplane approaches a runway at a 3 degree angle of depresssion. If the plane is flying at 30,000 ft., find the ground distance from the airport to the point directly below the plane when the pilot begins the descent. Round your answer to the nearest

296. ## Math

An airplane approaches a runway at a 3 degree angle of depresssion. If the plane is flying at 30,000 ft., find the ground distance from the airport to the point directly below the plane when the pilot begins the descent. Round your answer to the nearest

297. ## maths-urgently needed

A manufacturer lists the price of the goods at Rs.240 per article. The wholesaler gets a discount of 25% on the goods from the manufacturer. The retailers are allowed a discount of 15% on the list price by the wholesaler. The prescribe rate of sale tax at

298. ## math

Identify the solution(s) of the system of equations, if any. a) (1, 0.5) b) (0, 5.1) c) (5,5.5) d) (5/11, -2/11)

299. ## math

Identify the solution(s) of the system of equations, if any. x=1 y=1 a) no solutions b) (0,0) c) (1,1) d) infinitely many solutions

300. ## Chemistry

How many molecules are there in 24 grams of FeF3 ? Can somebody please show me how i can get to the answer ? Thank you

301. ## math

Identify the solution(s) of the system of equations, if any. 2x+y=1 x-y=3 a) (3/4, -1/2) b) (-2, 10) c) (4/3, -5/3) d) (4, -7)

302. ## math

Identify the solution(s) of the system of equations, if any. 3x-2y=6 5x=5-25y a) (28/13, 3/13) b) (-3/17, 32/17) c) (32/17, -3/17) d) (32/9, 7/3)

303. ## Chem

.240g Benzoic acid is dissolved in water at 100C and crystals of it formed when cooled to 20C that weighed .172g. What is the percent recovery (given solubility of benzoic acid at 20C is 2.9mg/mL) I understand the %recovery equation, but am not sure how to

304. ## it

Assume you have a computer that contains 1GB of memory. It contains four memory slots. Each slot can contain 128 MB, 256 MB, 512MB, 1 GB, or 2GB memory modules. two of the slots contains a 512MB memory module. What memory chip would you buy to increse the

305. ## Physics

At the bow of a ship on a stormy sea, a crewman conducts an experiment by standing on a bathroom scale. In calm waters, the scale reads 180 lb. During the storm, the crewman finds a maximum reading of 235 lb and a minimum reading of 132 lb. Find the