# Questions Asked onJanuary 16, 2012

1. ## arithmetic

the sum of the n termsof an ap whose first term is 5 and common difference is 36 is equal to the sum of 2n terms of another AP whose first term is 36 ans common difference is 5. Find n?

2. ## Calculus

4. Find the area of the largest rectangle (with sides parallel to the coordinate axes) that can be inscribed in the region enclosed by the graphs of f(x) = 18 – x^2 and g(x) = 2x^2 – 9.

3. ## Physics

A block starts at rest and slides down a fric- tionless track. It leaves the track horizontally, flies through the air, and subsequently strikes the ground.What is the speed of the ball when it leaves the track? The acceleration of gravity is 9.81 m/s2 .

4. ## Geometry

The midpoint of the segment joining points (a, b) and (j, k) is: (j-a,k-b) j-a over 2 k-b over 2 (j+a,k+b) j+a over 2 k+b over 2

5. ## Chemistry Problem - hard :<

Man in the vat problem. Long ago, a workman at a dye factory fell into a vat containing a hot concentrated mixture of sulfuric and nitric acids. He dissolved completely! Because nobody witnessed the accident, it was necessary to prove that he fell in so

6. ## Physics

3 charges are arranged along the x-axis. q1 = -4.50 nC is located at x = 0.200m q2 = +2.50 nC is located at x = -0.300m q3 = is a positive character located at the origin. What is the value of q3 for the net eletric force on it to be 4*10^-6 N? I found the

7. ## Calculus

Let f be the function defined by f(x)=xe^(1-x) for all real numbers x.: a. Find each interval on which f is increasing. b. Find the x-coordinate of each point of inflection of the graph of f

8. ## arithmetic

find the cost of 100g rice at 95p per half kg

9. ## Math

Point T is the midpoint of line JH. The coordinate of T is (0, 5) and the coordinate of J is (0, 2). The coordinate of H is: (0, 8) (0, 3) (0, 7) (0, 11)

10. ## chem

how many kilojoules of heat are absorbed when 1.00 L of water is heated from 18C to 85C? density of water is 1.0 g/ml

11. ## Physics

Two small spheres of mass 451 g and 695 g are suspended from the ceiling at the same point by massless strings of equal length 10.9 m . The lighter sphere is pulled aside through an angle of 65 degrees from the vertical and let go. At what speed will the

12. ## math

bob bender need to buy fertilizer and fencing for his vegetable garden.his square garden measure 10 feet on each side.the direction say that each bag of fertilizer will cover 50 square feet of soil. how many bags of fertilizer will be need to buy? how many

How do you determine if an element or compound is Aqueous, Solid, Liquid, or Gas just looking at a periodic table. Also, how do you determine if a compound or element is insoluble or soluble by looking at just the periodic table. What's the net ionic

14. ## physics

A car traveling in a straight line has a velocity of +8.5 m/s. After 3.5 s, its velocity is +9.0 m/s. What is the car's average acceleration in this time interval?

15. ## math

Ray OX bisects angle AOC and angle AOX =42 degrees, angle AOC is: 42 degrees 84 degrees 21 degrees 68 degrees

16. ## Chemistry

Exactly 5.02 grams of an unknown gas was sealed in a 3.0L flask at 37 degrees celsius and a pressure of 1.25 atm. Which on of the following is most likely to be the unknown? H2O, HBr, HCN, H2S, C2H2 ok so I did (1.25)(3.0) = n(0.0821)(310) 3.75 = n(25.451)

17. ## algebra

please help me here with a and b and do i have c and d correct?, i do not know how to start. john put his spare change in jar every night. If he has \$11.09, at end of Jan. . 22.27 at the end of feb, 44.35 in April, 75.82 in july, 89.00 in aug. and 114.76.

18. ## government

what is the consumer price index?

19. ## physics

45. Here the same stone is being accelerated vertically upward. a. Draw force vectors to some suitable scale showing relative forces acting on the stone. b. Which is the longer vector, and why?

20. ## Calculus

1. Given the function f defined by f(x) = x^3-x^2-4X+4 a. Find the zeros of f b. Write an equation of the line tangent to the graph of f at x = -1 c. The point (a, b) is on the graph of f and the line tangent to the graph at (a, b) passes through the point

21. ## chemistry

Energy in the amount of 470 J is added to a 30.0 g sample of water at a temperature of 9.00 degrees C. What will be the final temperature of the water?

22. ## Physics

A runner is jogging at a steady 8.4 km/hr. When the runner is 2.6 km from the finish line, a bird begins flying from the runner to the finish line at 42 km/hr (5 times as fast as the runner). When the bird reaches the finish line, it turns around and flies

23. ## chemisrty

Q4) Suppose you prepare 950 mL of a solution by dissolving 100 grams of NaCl in 900 mL of water. Assuming the density of pure water to be 1 g/mL, answer the following questions with regards to this solution: a) What is the mass percent of water in this

24. ## Chemistry

What happens in the artificial transmutation of an element? Can you give an example?

25. ## statistics

A manufacturer knows that their items have a normally distributed length, with a mean of 7.3 inches, and standard deviation of 0.6 inches. If one item is chosen at random, what is the probability that it is less than 5.5 inches long?

26. ## math

what is an equation of a polynomial function that has zeros at -3 and -2?

27. ## chemistry

the order of cation concentration of CuSO4, BaSO4, CaSO4 from highest to lowest.

28. ## pre- calculus

consider the collection of all rectangles that have lengths 2in. less than twice their widths. find the possible widths(in inches) of these rectangles if their perimeters are less than 200 in

29. ## geometry

Solve for x, given that ABCD is an isosceles trapezoid, AC = 2x + 12, and BD = 4x - 30.

30. ## pre-cal

v=0.85 sin 3.14/3 where t is the time in seconds, find the time for one full respiratory cycle?

31. ## geometry

The coordinate of the midpoint of segment AB is (-3, 2). Find the coordinate of A if the coordinate of B is (0, 2). A = (-6,2) (-3/2,2) (3,2)

32. ## chemisrty

Q5) The reaction for the combustion of propane is as follows: C3H8 + 5O2 ---->>3CO2 + 4H2O 1. If 20.0 g of C3H8 and 20.0 g of O2 are reacted, which is the limiting reactant? 2. How many grams of H2O can be produced? 3. How many grams of the excess reactant

33. ## chemisrty

Explain why water (H2O) boils at 100 oC whereas H2S boils at -61 oC, even though sulfur has a higher atomic weight than oxygen.

34. ## math

In Triangle ABC, AC = BC and mC = 62°. The longest side of the triangle is: AC BC AB AM

35. ## math

Give each letter of the alphabet a money value: A= 1 penny, B= 2 penny, C= 3 penny,and so on.Find words worth 1/5 dollar, 9/10 dollar, 1 1/20 dollars, and 1 1/2 dollars.

36. ## Physics

A horizontal force with a magnitude of 3.0 newtons applied to a 7.0 kilogram mass moves the mass horizontally a distance of 2.0 meters. Determine the work done against gravity in moving the mass. What is the formula that you use?

37. ## Chem Quanti

An organic pesticide (MW 183.7) is 8.43% Cl. A 0.627-g sample containing the pesticide plus inert material containing no chloride was decomposed with metallic sodium in alcohol. The liberated chloride ion was precipitated as AgCl weighing 0.0831 g.

38. ## physics

A sound wave, traveling at 348m/s, is emitted by the foghorn of a tugboat. An echo is heard 1.99 s later. How far away is the reflecting object? Answer in units of m

39. ## Chemistry

Jack drives 6.45 km to work and his car gets about 0.0147 km per gram of gasoline. Using the balanced chemical equation (you need to find out this equation by yourself), how many grams of CO2 is produced in this trip to work

1/4 * 1/2 =4D

41. ## Science 7R

how are cells organized in A multicellular organisms? cell, tissue, organ, organ system, organism, there's one more but i forgot... What is it???? Plus am I correct???

42. ## Science 7R Q2

What is the difference between a plant cell and an animal cell? a. plant cell have cell wall a animal cell don't b. a plant cell have cholroplast and a animal cell don't c. plant cell have a huge vacuole and a animal cell have a small vacuole d. animal

43. ## physics

Friction provides the force needed for a car to travel around a flat, circular race track. What is the maximum speed at which a car can safely travel if the radius of the track is 82.0 m and the coefficient of friction is 0.39?

Describe a typical day in your life from beginning to end eight different( (reflexive verbs).give time you do each of those activities as well. 1-Yo me levanto a las seis de la manana. 2-Entonces me lavo la cara a las seis y cuarto. 3-Depues de que me

45. ## geom/trig

Using scissors to cut a rectangular piece of paper from one corner ro the opposite corner. The cut is 36 cm long and makes a 34 degree angle to the uncut edge. How many cm long is the paper (from the corner where he started the cut?

46. ## Chemistry - Quantitative analysis

A mixture weighing 7.290 mg contained only cyclohexane, C6H12 (FM 84.159), and oxirane, C2H4O (FM 44.053). When the mixture was analyzed by combustion analysis, 21.999 mg of CO2 (FM 44.010) were produced. Find the weight percent of oxirane in the mixture.

47. ## Trigonometry

2cos^2(x) = 13sinx - 5 How do i solve for x? I think i have to use the sin^2x + cos^2x = 1, but I'm not sure how to use that. I thought about maybe doing 2(1-sin^2x) = 13sinx - 5 but then i get stuck. Any suggestions?

Kenneth has \$5. He spends g cents every day. How much money does he have left after one week?

49. ## chemistry

15g of calcium is mixed with 36g of ethanoic acid.identify the limiting regent.

50. ## languag arts

In the sentence, "Sylvia looks good in her mermaid costume" why is good the correct word used as an adjective, as opposed to using well as an adverb. Isn't "good" describing how Sylvia looks?

51. ## Math-Linear Equations

Please let me know if I understand this correctly. Find the slope and the y-intercept of each equation: 1)y-9x= 1/2 +9x= 1/2 + 9x y= 1/2 + 9x slope:9; y-intercept: 1/2 2)2y-6=3x +6 +6 2y=3x + 6 - - 2 2 so then: y=3x+3 3) -2y=6(5-3x) -2y= 30-18x - -- -2 -2

52. ## english

i need a word similar to convey, but has a bad meaning

53. ## physics

A 1.80 m radius playground merry-go-round has a mass of 120 kg and is rotating with an angular velocity of 0.350 rev/s. What is its angular velocity after a 28.0 kg child gets onto it by grabbing its outer edge? The child is initially at rest.

54. ## World History

Gender Roles in Ming China Versus Western Europe 1450-1750 I have to write 2 sentences each comparing the gender roles. Having trouble finding this information

55. ## Math problem

solve by elimination 5x+2y=-11 7x-3y=13

56. ## geometry

you have been asked to help build a rectangular play area at the new tracy elementary school. you arrive at the site eager to begin. much to your suprise, the only things available to work with are two pieces of rope. Explain how you can use the rope to

57. ## math

The soccer team ordered 140 T-shirts to sell at the school fair.Oh those T-shirts,50% white, 20% blue, 15% gren, 10% red, and 5% black.How many black and red?

58. ## Math

719 plus 210 write as a numerical or algebraic expression?

59. ## science

I need to answer an essay question for science and I wanted to make sure of something first. The essay question is- What characteristics do plants share? Can you tell me if all plant cells have chloroplasts? I do not think they do so that would not be

60. ## physics

james pushed his 10 kg cart with a constant horizontal force of 9.0 Newtons over a distance of 3.1 meters. If all frictional forces are neglected and the cart started from rest, what is the grocery cart's final speed in meters per second?

61. ## algebra

given point slope form linear equation to use in answers y-3=3(x+ 1) a.What is equation in standard form of a parallel line that passes through (0, -2)? y = 3x -2 -3x + y = -2 b. on parallel line find the ordered pair where x = -2? would it be -2.0 if not

62. ## chemisrty

Q3) Consider a 10 L container at 0 oC with 40 grams of He and 40 grams of Ar gases: a) Calculate the partial pressure of Ar in the container? b) Calculate the partial pressure of He in the container? c) What is the total pressure of the container?

63. ## physics

A piston in a car engine has a mass of 0.75 kg and moves with motion wich was approximately simple harmonic. If the amplitude of zis oscillation is 10 cm and z max. safe operating speed of z engine is 6000 rev. per min. Calculate: a. Max acceleration of z

64. ## science

Betsy and Michael are 150 meter apart, Michael is walking toward Betsy at a constant speed of 2.5m/s. start from the rest, how long it take to meet?

65. ## math compound interest

I can figure all of the other compound interest problems except these-In how many years would Ben's \$100,000 take to be worth \$250.000 if compounded annually at the rate of 6.5%?-Thanks and good night :)

66. ## science

Betsy and Michael are 150 meter apart, Michael is walking toward Betsy at a constant speed of 2.5m/s. start from the rest, how long it take to meet?

67. ## math

What is 17 times 13.4

68. ## English

Ms Sue, thank you very much again for helping me. I just wanted to know, if possible, if writeacher is well. He has always helped me so much. Thank you.

69. ## chemisrty

Q1) A solution of ascorbic acid (C6H8O6, Formula mass = 176 g/mol) is made up by dissolving 80.5 g of ascorbic acid in 210 g of water, and has a density of 1.22 g/mL at 55 oC. Calculate the following: a) the mass percentage of ascorbic acid b) the mole

70. ## chemisrty

Q2) If 0.327 moles of H2S effuses in 462 seconds, how many seconds would it take for the same number of moles of CH3Cl to effuse?

71. ## finance

The required investment is \$1 million, and anticipated year-end cash flows are as follows: Year 1 2 3 4 Cash flow \$300,000 \$400,000 \$500,000 \$200,000 Compute the net present value rate of return using a 10 percent required return. What should be decision

72. ## math

a local resturant sells muffins in boxes of 6, 9, and 20. determine whether the following amounts of muffins can be purchased. number of drsired muffins 15,99, 19, 48,76

suppose you used the rule (3x+1,3y-4) to transform the original figure into a new figure. Would the new figure be similar to the original? Explain. I NEED HELP ASAP PLEASE!!! HELP. Thanks.

74. ## COM 1001

How do the components and processes of communication apply to the electrnic/computer channel?

75. ## Math

I have a box that is 15cm-wide, 10cm-long, and 3cm- wide. To get it's volume I would add all the sides. Thanks

76. ## CHEMISTRY

1. The use of a more dilute NaOH solution for the standardization of NaOH.

77. ## physics

A simple pendulum is made from a bob of mass 0.04 kg suspended on alight string of length 1.4m. Keeping the string taut, the pendulum is pulled to one side until it has gained a height of 0.1m. calculate: a. The total energy of the oscillation (b) the

78. ## geography

Which state capital is east of 90 degrees W longitude: Jackson, Indianapolis, St. Paul? My answer is Indianapolis. 2. Describe the Pacific Ocean's location in relation to the continents it touches. The Pacific Ocean is East of Asia and Australia and West

79. ## Math

I do not understand how to measure the volume of a star shape medallion. I think I would multiply all the stars on the medallion. Thanks for your help.

80. ## Math

How would I draw an age appropriate graphic organizer on snow for a Pre K classroom?

81. ## Math

The Johnsons ordered new carpet for their family room. That paid 33% of the total cost when they ordered it, and will pay the remaining amount when the carpet is delivered. If they paid \$192.72 when they ordered the carpet, how much will they pay when it

82. ## math

suppose you used the rule (3x+1,3y-4) to transform the original figure into a new figure. Would the new figure be similar to the original? Explain. Thank you so much. (P.S, I need help ASAP D:)

83. ## integral calculus

ʃ (e^x – 4e^-x/e^x) dx need help...thnks

84. ## physics

A car traveling at 60km/h. It then accelerates at 3.6m/s^2.How long does it take to reach a new speed. How far does it travel during acceleration.

85. ## SCIENCE

what are the physiological benefits of eating breakfast. what are the physiological occurances or causes of fainting (syncope). how are these two ^ related and what is the significance

86. ## Chemsitry

Alpha, beta particles and gamma rays. How does the atomic number and atomic mass number change when a radioisotope decays to produce alpha beta or gamma radiation.

87. ## Math

I am an improper fraction.My numerator is twice my denominator.Iam equal to two if you simplify me.What can I be?

88. ## Lab Math-Dilutions

You have 1.50mL of a urine specimen. The assay you are about to perform requires a 1/25 dilution of this specimen. How much water must be added to the specimen to achieve this dilution? I know this is simple but I am not coming up with the right answer.

89. ## English 2

At the opening of A Separate Peace, the narrator returns to the Devon School two years after graduation. to become a teacher at the school. fifteen years after graduation. to attend his sons graduation. Unlike Finny, Gene tends to be spontaneous.

90. ## math

You are reducing a map of dimensions 2ft by 3ft to fit to a piece of paper 8in by 10in. What are the dimensions of the largest possible map that can fit on the page?

91. ## math

What is P(-4) given that P(x) = 2x to the fourth power - 3x to the third power + 5x to the 2nd power - 1

92. ## physics

A stationary mass of 10 kg disintegrates explosively, with the evolution of 4.2*10^5 J, into three parts, two having equal masses of 3 kg. These two masses move at right angles to each other. Calculate the speed of the third part.

93. ## math

What is P(-4) given that P(x) = 2x to the fourth power - 3x to the third power + 5x to the 2nd power - 1?

94. ## math

You are reducing a map of dimensions 2ft by 3ft to fit to a piece of paper 8in by 10in. What are the dimensions of the largest possible map that can fit on the page?

95. ## math

What is P(-4) given that P(x) = 2x to the fourth power - 3x to the third power + 5x to the 2nd power - 1?

96. ## math

What is P(-4) given that P(x) = 2x to the fourth power - 3x to the third power + 5x to the 2nd power - 1?

97. ## 12th Grade Health Class

My butt is itchy, how can I scratch it?

98. ## math

what is an equation of a polynomial function that has zeros at -3 and -2?

99. ## Math

Ray runs at a speed of 6 1/2 miles. How long will it take him to run a track that's 12 7/10 miles long???

100. ## Health

explaining how a new office would be set up

72-3(4^2-2^3)*3 Evaluate the expression. I don't know the steps to take so please include them in your answer, THANKS:)

102. ## Bank Reconciliation

Aug 14th, One of our Partner's ( Compuville ) cash book showed a debit balance of \$4,000.00. His bank statement showed a balance of \$4,270.00. On comparison the following were found: * check issued amounting to \$2,500.00 has not been cashed * The bank

x^2-7x+10=28

104. ## Education

how should local schools respond to issues that might impact SEI instruction

105. ## math

find the imaginary solutions of the equation by factoring. x to the third power - 16x = 0

106. ## health

The easiest and best way for a teacher to plan a diet for young children that’s well balanced in nutrients is by using _______ guidelines.

107. ## math

Where p and q are statements, "p and q" is false if p is false. Always Sometimes Never

108. ## A&P

together leucocytes and platelets compromise ? percent of total blood volume

109. ## math

bob bender needs to buy fertilizer and fencing for his vegetable garden.his square garden measures 10 feet on each side.the directions say that each bag of fertilizer will cover 50 square feet of soil.how many bags of fertilizer will he need to buy?How

110. ## math

Enter in standard form the equation of the line passing through the given point and having the given slope. B(2, - 5), m = -2/3

111. ## integral calculus

ʃ (e^x – 4e^-x/e^x) dx need help...thnks

What percent error is introduced by weighing a Styrofoam block in air, which exerts an upward buoyancy force, rather than in vacuum? The density of air is 1.2 kg/m^3. (The density of Styrofoam is 160 kg/m^3)

113. ## English

Ms Sue, I urgently need you to check these sentences I need to hand in for tomorrow and a few words. 1) knee-high socks, knee socks Are they both possible? 2) a two-tone jumper/ a two-colour jumper (which is best?) 3) She proposed going to the cinema She

114. ## chemistry

an original sample of K-40 has a mass of 25.00 grams. After 3.9x 10 to the ninth years, 3.125 grams of the original sample remains unchanged. What is the half-life ok K-40 in minutes? Is it 6.8328 x 10 to the 14th

115. ## physics

A ball with mass m rolls over the edge of a table h meters above the ground. It lands a distance x meters from a point directly below the edge of the table. Show that the speed of the ball at the edge of the table was v=x/sq rt 2h/g and that the kinetic

116. ## English

Ms Sue, could you please check my sentences, please? I still have a few doubts. 1) How long is it since you (last) played with the band? Since last year. Or just last year. 2) How long ago did you last play with the band? A year ago. When describing a

117. ## Chemistry - Gravimetry

A commercial algaecide containing an organocopper compound was treated with concentrated nitric acid and evaporated to dryness. After dissolution of the residue, the copper was precipitated with -benzoin oxime. If the sample weighed 15.443 g and the

118. ## College Chem

A 2.446-g sample thought to contain only one volatile substance, MgCO3, was heated in a nitrogen atmosphere for 30 min. After cooling, the residue weighed 2.216 g. Calculate the percentage of magnesium carbonate in the sample.

119. ## Math

Classify by degree an by number of terms f(r)= 2r to the second power +5r+7

120. ## Chemistry Problem!

What weight of sample containing 8.00 % Fe3O4 must be taken to obtain a precipitate of Fe(OH)3 that, when ignited to Fe2O3, weighs 150 mg?

121. ## English

Improving Your Writing. Section 1 Facts and Figures that define the problem (the cause) Details that show the impact of the problem (effects) on Jack, Ruth, and the company. Section 2 The steps needed to change the situation Reason to implement each step,

122. ## Chem

What weight of sample containing 8.00 % Fe3O4 must be taken to obtain a precipitate of Fe(OH)3 that, when ignited to Fe2O3, weighs 150 mg?

123. ## Physics

A total of 8.0 joules of work is done when a constant horizontal force of 2.0 newtons to the left is used to push a 3.0 kilogram box across a counter top. Determine the total horizontal distance the box moves.

124. ## Chem 27

An antacid tablet weighing 3.084 g was dissolved and diluted to 100.0 mL in a volumetric flask. A 25.00-mL aliquot was removed and treated with sufficient 8-hydroxyquinoline to precipitate all of the aluminum and magnesium. After proper collection and

125. ## Gravi prob chem

In the gravimetric determination of barium as BaCrO4, what weight of sample must be taken so that the weight of the precipitate in milligrams multiplied by 100 will equal the % Ba in the sample?

126. ## Chemistry Homework

If 0.8000 g of a mineral yields 0.2400 g of NaCl + KCl, and this mixture contains 58.00% of Cl, what is the percentage of Na2O and K2O in the mineral?

127. ## Physics

A car sits at a red light. Once the light turns in green, the driver accelerats at a rat of 3.5m/s^2. How far has the car moved after 6 seconds? I have so far d= (1/2)at^2 please check is it (1/2)(3.5m/s^2)(6 seconds) is the answer 1.75 m/s^2 x 6 sec=10.5

f(x)=x2+2x-5

129. ## Calculus

3. Discuss the graph of y=x/3+2+3/x. Determine the values of x for which the graph is a. Continuous b. Rising c. Falling d. Concave upward e. Concave downward f. Has a relative maximum g. Has a relative minimum

130. ## ELA

"It is only with the heart that one can see rightly" and my interpretation of this quote is that If you truly believe in yourself, you can make the right decisions. I need help to relate this quote to ROmeo and Juliet with an appropriate literary element.

131. ## Math

A coin is tossed three times. If heads appears on all 3 tosses, Mary will win \$16. If heads appears on 2 of the tosses, she will win \$2. The game costs \$5 to play. What is her mean expectation?

132. ## algebra

A triangle has an area of 20 inches squared. Every dimension of the triangle is multiplied by a scale factor, and the new triangle has an area of 180 inches squared. What is the scale factor.

133. ## math

Suppose that you invest \$1583 in an account that earns interest at an APR of 6.7%, compounded continuously. Determine the accumulated balance after 6 years.

134. ## math

a mother is 21 years older than her new born daughter.how old will the daughter be when her age is 1/4 that of her mothers

135. ## physics

While John is traveling along an interstate highway, he notices a 166 mi marker as he passes through town. Later John passes a 120 mi marker. What is the distance between town and John’s current location? Answer in units of mi

136. ## physics

A jet travels at 434 m/s. How long does it take to travel 294 m? Answer in units of s

137. ## chemexamples

what are some good compounds(salts, acids,/bases) that are good conductors when dissolved in h2o

138. ## algebra

Cannot get this solution!!! (x-2)/(x) + (1/2)= (x+1)/(x-2)

139. ## Chemistry

Jack occasionally goes to work by bicycle where he exhales once per 3.00 sec. If in Jack’s every exhale is 4.50% CO2 (by volume), he exhales a total volume of 4.6 L each time, and it takes Jack 20.0 minutes to bike to work, how many grams of CO2 has he

140. ## physics

An 88kg fisherman jumps from a dock into a 131kg rowboat at rest on the west side of the dock. If the velocity of the fisherman is 4.7m/s to the west as he leaves the dock, what is the final velocity of the fisherman and the boat. East is positive.

141. ## geometry

question; in the accompanying diagram of parallelogram abcd,m

142. ## algebra

0.15x+55>0.10x+80 how do i work this out?

143. ## physics

Time() 0 2 4 6 8 10 12 14 16 Velocity() 0 0 2 5 10 15 20 22 22 By measuring the slope of your curve, find the magnitude of the instantaneous acceleration at times = 9s i don't know how to solve it

144. ## Math

If 16% of the

145. ## Maths

On the horizontal plane there is a vertical tower is a vertical tower and the shadow of its is found to be 40 m longer.when sun's altitude is 30 degree than what it is 60 degree.find the height of tower.

146. ## Chemistry

If a sample of Co2(CO)8 is found to contain 6*10^-2 mol of C atoms, how many grams of Co atoms are present? Molar Mass (g/mol) Co2(CO)8 - 341.95 Co atom - 58.933 C atom - 12.011 O atom - 15.999 Avaogadro's No.: 6.022*10^23 Do I need to use the 6*10^-2 mol

147. ## Physics

A(n) 7 g bullet is fired into a 122 g block that is initially at rest at the edge of a frictionless table of height 0.9 m. The bullet remains in the block, and after impact the block lands 1.7 m from the bottom of the table.The acceleration of gravity is

148. ## Physics

A 32 kg child puts a 15 kg box into a 12 kg wagon. The child then pulls horizontally on the wagon with a force of 65 N. if the box does not move relative to the wagon, what is the static friction force on the box?

149. ## physics

While John is traveling along an interstate highway, he notices a 166 mi marker as he passes through town. Later John passes a 120 mi marker. What is John’s current position?

150. ## Science

What is the best definition for The law of universal gravitation ?

151. ## Physics

Imagine that a person is seated in a chair that is suspended by a rope that goes over a pulley. The person holds the other end of the rope in his or her hands. Assume that the combined mass of the person and chair is M. What is the magnitude of the

152. ## Physics

A car is traveling counterclockwise along a circular bend in the road with an effective radius of 200 m. At a certain instant, the carâ€™s speed is 20 m/s, but it is slowing down at a rate of 1.0 m/s^2. What is the magnitude of the carâ€™s

153. ## Physics

Imagine that you are designing a circular curve in a highway that must have a radius of 330 ft and will carry traffic moving at 60 mi/h. a) At what angle should the roadbed be banked for maximum safety? b) If the roadway is not banked, what would the

154. ## Physics

â€œRotorâ€ is a ride found in many amusement parks that consists of a hollow cylindrical room (roughly 8 ft in radius) that rotates around a central vertical axis. Riders enter the room and stand against the canvas-covered wall. The room begins to

155. ## Chemistry

What is the net ionic equation for this reaction? 2MnO4 (aq) + 5H2C2O4 (aq) + 6H(aq)----->10CO2 (g) + 2Mn(aq) + 8H2O(l)

156. ## CRE101

What does it mean to evaluate the information that is revealed about a news sources? I am doing a assignment on compare and contrast esay on the difference between newspaper and news broadcast, and it is one of the questions. Do I evaluate the the person

157. ## Math

How does tanθ look like in a graph? What would it be their y values?

158. ## human body

With your understanding of bone and muscle tissue (cells and the extracellular material) discuss two lifestyle factors (one for bone and one for muscle) that affect the growth, development, size and/or healing (positively or negatively) of the tissue.

159. ## geometry

you have been asked to help build a rectangular play area at the new tracy elementary school. you arrive at the site eager to begin. much to your suprise, the only things available to work with are two pieces of rope. Explain how you can use the rope to

What was the Invention Purpose of the Railroads? And also Railroads I am a bit confused does it relate to the tracks or the trains the move on the Railroad tracks?

161. ## Psy

Describe a hypothesis related to the area of psychology in which you are predicting an interaction. Describe the specific nature of the interaction and why you think an interaction would occur. Justify your answers with appropriate research and reasoning.

162. ## algebra

-9y-12(2-3y)=-25-2(y+6 show work.

163. ## literacy

When choosing your search strategy for a search engine, it's best to

164. ## ANATOMY

what are the physiological benefits of eating breakfast. what are the physiological occurances or causes of fainting (syncope). how are these two ^ related and what is the significance

165. ## trig

How do I get exact measures? cosine 270 degrees sin 90 degrees tan 360 degrees csc 45 degrees no calculator!

166. ## government

How can presidential power as commander-in-chief restrict congressional power?

167. ## math

Hello Jiskha-hope you can help me here! A straight road to the top of a hill is 2500 feet long and makes an angle of 12 degrees with the horizontal. Find the height of the hill?

168. ## Math

In 2008 output for the country of OZ was 12,000 tons of potatoes and the total labor force 1,100 workers. In 2009 output for the country of OZ was 14,300 tons of potatoes and the total labor force 1,150 workers. 2008: Employment = 1,000 workers

169. ## math

If 26% is 180, what is 50%?

170. ## English

What does civic stewardship mean??

171. ## trig

I have a couple of these and cannot locate directions I can understand-please help! Draw the graph of y=3cos(2x) for 0< or= x < or = 2 pi

172. ## physical science

the headlamp and 2 identical tail lamp are conected in paralel to batery with unknown internal resistancs.headlamp resistance wth 2.4 ohm controld by switch s1.the tail lamps are controled by s2.the resistance of the connection wired may be ignored.

173. ## IL state law please

What is the hourly minimum wage in the state of Illinois please? Please refer me to the dollars and cents amount.

174. ## math

Find the area and perimeter of a rectangle for which (– 2, 2), (7,2), and (7, – 3) are three of the vertices. What is the 4th vertex?

175. ## Economics

Divide 825,000 by 40 million then round the answer to four (4) decimal places

176. ## algebra

what is the standard form of 2.4*10 to the fourth power

177. ## Chemistry

If a sample of C6H4(CH3)2 is found to contain 3.54 * 10^26 CH3 groups how many moles of C6H4(CH3)2 molecules are present? C6H4(CH3)2 - 106.17 CH3 group - 15.035 C6H4 Group - 76.098 Please explain steps

178. ## Statistics-Confidence Interval

Can someone please help me on how to work this out?? I'm so super confused. Thanks! A professor at Kaplan University claims that the average age of all Kaplan students is 36 years old. Use a 95% confidence interval to test the professor's claim. Is the

179. ## Intermediate Algebra

If company A has an excess amount of glove they are willing to sell for a flat rate of 79.95. and company B has gloves they will sell for 30.95 and .15 per pair of gloves and company C also has gloves they will sell for 20.95 and .35 per pair. when will

180. ## Physics

At the top of a frictionless inclined plane, a .50 kilogram block of ice possesses 6.0 joules of gravitational potential energy with respect to the bottom of the incline. After sliding halfway down the plane, the block's gravitational potential energy is?

181. ## geometry

To the nearest tenth, what's the distance between the points k(7,-10) and M (1,4)

182. ## math

suppose you use the rule (3x+1,3y-4) to transform the original figure into a new figure. How would the angles of the new figure compare with the angles of the original? Please, I need help ASAP

183. ## Anthropology, sociology and psychology

''How do people act in an unfamiliar situation?'' How is this question in quote anthropological?

184. ## Fine Art 7 - Dr. King Letter (to share)

Dear Dr. King. You was a brave man. A man who do whatever it takes to stop Civil Rights. A man with a beautiful wife and family. A man who became the public face of a movement. A man who tirelessly worked, marched, got arrested, spoke on the topics of

185. ## math

suppose you use the rule (3x+1,3y-4) to transform the original figure into a new figure. How would the side lengths of the new figure compare to the side lengths of the original? I need help fast. Thank you so much.

186. ## math

A recently released film has its weekly revenue given by Where R(x) is in million of dollars and x is in weeks. (a) Find the asymptotes of the graph of the function R. (b) Find the intervals where R is increasing and decreasing, if any. (c) When will the

187. ## math

how do i find the percent of a component in a mixture given the amount of compound and the amount of mixture c=3g,m=8g please help thank you

188. ## physics

A physics student throws a softball straight up into the air. The ball was in the air for a total of 6.16 s before it was caught at its original position. (a) What was the initial velocity of the ball? (b) How high did it rise?

189. ## physics

A physics student throws a softball straight up into the air. The ball was in the air for a total of 6.16 s before it was caught at its original position. (a) What was the initial velocity of the ball? (b) How high did it rise?

190. ## math

suppose you used the rule (3x+1,3y-4) to transform the original figure into a new figure. Would the new figure be similar to the original? Explain. ASAP

191. ## Literacy

Journals differ from magazines in that they're A. available by subscription. B. sources of academic research not intended for the general public. C. published only periodically. D. printed with volume numbers.

192. ## geometry

The altitude of an equilateral triangle is 7 square root 3 units long. The length of one side of the triangle is ____ units. 7 14 14 square root 3 7 square root 3 over 2

193. ## literacy

It's important to include references in your research paper because references A. give credit to authors. B. are required on most writing assignments. C. reduce the risk of false conclusions. D. prove that you didn't conduct your research on the Internet.

194. ## physics

a 1.67kg ball is atached to a ceiling by a 1.29m long string. the height of the room is 3.08m. the acceleration of gravity is 9.81 m/s^2. what is the gravitational potential energy associated with the ball relative to the ceiling?

195. ## math

How do you solve C=ln(125000000/1-125000000

I really need help with some vocabulary words. I know what the definitions is but i have no idea what it looks like and i have to draw a picture for the two words. WORDS: vascular plant nonvascular plant Please help!! Thank you!!

p=6s,for s

198. ## Literacy

1. Journals differ from magazines in that they're A. available by subscription. B. sources of academic research not intended for the general public. C. published only periodically. D. printed with volume numbers. my answer is B 3. It's important to include

199. ## literacy

Which of the following keyword searches should retrieve the most results in an online database? A. Beta B. Beta OR blockers C. Beta NOT blockers D. Beta AND blockers Which of the following will probably contain the most objective data? A. A memoir about

200. ## Chemistry

A .25 g chunk of sodium metal is cautiously dropped into a mixture of 50g of water and 50 g of ice both at 0 C 2Na(s) + 2h2o(l) -> 2naoh(aq) + H2 Delta H = -368 kj Will the ice melt Assuming the final mixture has a heat capacity of 4.18 J/g C calculate the

201. ## Friction

Why can't you pull two phone books apart that have each of their pages one on top of the other?

202. ## Compounded monthly

P - Po(1 + r/n)nt P = \$10,000 r = 6.5% n = 12 t = 216MO

203. ## Probability

Automated chemical synthesis of DNA has made it possible to custom-order moderate length DNA sequences from commercial suppliers. Assume that a single nucleotide weighs about 5.6 X 10^-22 grams and that there are four kinds of nucleotides. If you wish to

204. ## math

Hi I'm Having a problem with a question in the application of the maximum and minimum (derivative) I want to prove that the height = 3 and i had this relation ===> H = h + r and h = - 2r ! I'm sure that (H) = 3 r But I Can't get the answer of (h) in

205. ## English

Improving Your Writing. Is below look correct? Section 1 Facts and Figures that define the problem (the cause) Details that show the impact of the problem (effects) on Jack, Ruth, and the company. Section 2 The steps needed to change the situation Reason

206. ## Precalc

Suppose vector a is 3 units long, the magnitude of vector b is 1 units and cos (θ) = -0.3, where θ is the angle between the two vectors when they are placed tail-to-tail. What does the inner product of vector a and vector b equal?

207. ## Math

In Triangle ABC, AC = BC and mC = 62°. The longest side of the triangle is: AC BC AB AM

what is 37

209. ## English

I urgently need you to check these sentences I need to hand in for tomorrow and a few words. 1) knee-high socks, knee socks Are they both possible? 2) a two-tone jumper/ a two-colour jumper (which is best?) 3) She proposed going to the cinema She proposed

Why might the study of identical (monozygotic) twins be valuable in constructing a model of abnormal behavior? How would dizygotic twins be different?

211. ## pre-calculus

Write the first expression in terms of the second if the terminal point determined by the t is in the given quadrant: sin t, cos t; quadrant 2

212. ## math-calculus

i did this question long time ago and i realize today that at back of book answer be different. write the following absolute value functions as piecewise functions. g(x) = |x+1| positive be x+1 negative be -(x+1) but in back of book it says negative one be

213. ## Geometry

The midpoint of the segment joining points (a, b) and (j, k) is: (j-a,k-b) j-a over 2 k-b over 2 (j+a,k+b) j+a over 2 k+b over 2

214. ## math

1.Social Security laws allow you can collect full social security benefits at age 67 however; the law allows you to retired early at age 62 with a 30% reduced rate of benefits. If your full benefits were \$1,000 a month, what would your reduced amount be at

215. ## statistics

a male children born to women who smoke during pregnancy run the risk of violent and criminal behavior that lasts well into adulthood. can we infer that smoking during pregnancy is responsible for criminal behavior in people?

216. ## german

is skinny jeans masculine femine or neuter

217. ## physics

A ball rolling down an incline travels 6.0 m in the first 0.25 seconds, and 24 m in the first 0.50 seconds. Find: The average speed for the first time interval

218. ## trig

how do I find this without a calculator? sin 90 degrees?

219. ## socials

can anyone plz tell me about cuba's welfare

220. ## Chemistry

Given 80g of Calcium reacts with Fluorine at STP, how many atoms of Fluorine are consumed? Heres the formula: Ca (s) + F(subscript 2) --> CaF(subscript 2) How do i do this? Thanks! Jackie

221. ## French

Can someone edit my ISU? it's only 8 paragraphs.

222. ## Chemistry

What is the volume of 128 g of Oxygen at STP?... here's my work... O=16 128/16= 8 moles 8(22.4) = 179.2 L Where did i go wrong?

223. ## science

how is eating breakfast important to prevent fainting

225. ## chemistry

Determine the specific heat of iron if 6.1 J of energy are needed to warm 1.50 g of iron from 20 degrees C to 29 degrees C

226. ## physics

If you have swam one lap in a swimming pool, that means you have swam from one end to the other and back. In 3 h, a swimmer makes exactly 30 laps in a swimming pool that is 30 m long. Determine the distance the swimmer traveled, the total displacement of

Write the polynomial in simplest form with roots 4, 5i and -5i(multiply it out so no parentheses remain (x-4)(x+5i)(x-5i)(NOT SURE ABOUT THIS ONE) (x-4)(x^2-25i^22) (x-4)(x^2+25) x^3+25x-4x^2-100 x^3-4x^2+25x-100 Is this correct

228. ## nonfiction

write a small paragh about caravan

229. ## division of complex numbers

(1-2i)/(2+3i) Do I multiply both the numerator and denominator by 2+3i?

Please solve for x. ax^2 + bx +c=0

231. ## Chemistry

A piece of Copper alloy with a mass of 89.0 g is heated at 30.0 degrees C to 50.0 degrees C. In the process, it absorbs 517 J of energy as heat. What is the specific heat of this copper alloy? and Please do a step by step, I really want to see where I keep

232. ## Literacy

4. Which of the following would be the best way to get to a list of encyclopedias that are available on the Web? A. Search a periodical database. B. Look at the Library of Congress Web site. C. Visit the Internet Public Library. D. Search the library

233. ## Literacy

6. To avoid plagiarism in your written research paper, you must provide a citation for which of the following? A. The United Nations ruling on the Soviet-bloc countries B. Former President John F. Kennedy's birthday C. Statistics about Web usage you found

234. ## physics

How much energy is needed to increase the temperature of 500g of lead from 20 degrees celcius to 45. The specific heat heat capacityof lead is 128J/kg/degrees celcius

235. ## math

Which of the following sets of Dewey Decimal call numbers is in the correct order? A. 100.01 PRO, 100.1 BLU, 010.1 ABR, 004.15 KWA B. 010.1 ABR, 004.15 KWA, 100.01 PRO, 100.1 BLU C. 100.1 BLU, 010.1 ABR, 004.15 KWA, 100.01 PRO D. 004.15 KWA, 010.1 ABR,

236. ## algebra

I need to solve this and am not sure how to approach?Do I first find for the sum of the first 2 terms? (x-2)/(x) + (1/2)= (x+1)/(x-2)

237. ## Literacy

11. You're writing a paper on exercise and health, so you enter "exercise and health" in a keyword search to find articles in a library database. Your search, however, produces several thousand articles. Which of the following would help you retrieve

238. ## World History

I have to write 2 sentences each from the early modern time period. European Versus Asian Economic Systems Having trouble finding Asian information

239. ## english

The Smith's are going to dinner OR The Smith's is going to dinner... i think it is the first one but because we say my family is going to the park NOT my family are going to the park so... thx