# Anne

Newest questions and responses by Anne
1. ## maths

the approxiamate distance between two villiages is given as 11km. The actual distance is 10.7km. Find the diffrence in metres

2. ## physics

A river has a steady speed of 0.562 m/s . A student swims upstream a distance of 0.839 km and returns to the starting point. If the student can swim at a speed of 1.06 m/s in still water, how long does the trip take? Answer in units of s.

3. ## Calc: Derivatives

Find second derivative (d^2y/dx^2) of (-2x^2 + 4xy = 2x/y)

4. ## calc

Differentiate : (t^3 +2t -1) / (t+1) = I don't understand how the answer is: (1)(t^3+2t-1) - (3t^2 +2)(t+1) All over (t+1)^2

5. ## Math

Marie sells magazines for \$30 each. She receives 20% commission on her sales. How much money does she earn for each magazine sold?

6. ## CHEM?

If the %T (Transmittence) of a sample is found to be (3.45 x 10^1) %, what is the absorbance of this solution?

7. ## maths

proof that tanx + secx -1/tanx - secx+1 = 1+sinx/cosx

8. ## maths

Simplify :1/1-cosx +1/1+cos x

9. ## Calculating delta H

I honestly don't know where I went wrong with my calculations. I've been adding the products separately. Then I add the reactants separately. Finally, I take the product and subtract from the initial. Could you do this so I can double check my work? HCl +

10. ## maths

during an outbreak of the ebola virus. Health workers gathered the following information .1) by the end of the first week 982 people were infected. Thereafter the number of people infected increased by 9% per day. Approximately how many people were

11. ## Math

Find the volume of a spherical cone in a sphere of radius 17 cm. if the radius of its zone is 8 cm.

12. ## Math

How do you find the surface area of a rectangular prism though? I have (I think) the same question. 15mm = length | 3 mm = width | 4 mm = height. How do you solve it?

13. ## statistics

A population has an average of 150,000 with a standard deviation of 27,000. A random sample of 81 items is chosen. What is the standard error?

14. ## Chemistry

IF 24.5 mL of the .10M NaOH solutino is required to reach the endpoint in a titration with an unknown monoprotic acid, how many moles of the acid were present?

15. ## Chemistry

The boiling point of a solution increases directly as a function of the number of moles of solute present in a given mass of solution. This relationship is expressed mathematically by the following equation. ΔTb = Kb·m ΔTb is the boiling-point elevation

16. ## english

what roles are played by the female characters you encountered in this unit? describe some of these females characters, their traits, and the roles they played within the selections you read, especially considering that all of those selections had male

17. ## Biology

A farmer wants to propagate a good variety of a crop in a way which maintained all its desirable traits. Which of the following methods should be used? A. Self Pollination B. Vegetative propagation C. Growing seeds produced from this variety D.

18. ## Biology

A farmer grew only one type of onion. All of the onion plants died from the same disease. What can be said of this onion plant population. A. Only few plants were resistant to the disease B. All of the onion plants were resistant to the disease. C. The

19. ## Cryptography

Problem 1. (25 points) Let p be a prime and g be a generator of the multiplicative group Zâˆ—p of integers modulo p, (note that Fâˆ—p is also commonly used to denote this group, but we will stick with Zâˆ—p). Let Î» be the bit length of p.

20. ## Computer Architecture

Your project is to write a partial disassembler for MIPS instructions in Java. That is, your input will be the 32-bit machine instructions that a compiler or assembler produces. Your program then figures out what the original source instructions were that

21. ## Math

The boys mixed 10 gallons of 20% pure lemon juice mix and 10 gallons of the 70% pure lemon juice mix , because they wanted 20 gallons of lemonade at a 40%lemon juice mixture. They thought that because 40% was almost halfway between 20% and 70%,they should

22. ## Math

10 + h > 2 + 2h

23. ## Foreign exchange

Just want to have clarification on foreign exchange rates. I am confused with appreciate/depreciate...which is better, etc. Let's say a Canadian company has USD costs to be paid. It will be better for the company if USD depreciates/lose value (example:

24. ## Chemistry

Hello I have a question relaté to nucleophiles. Is The alcohol CH3OH a nucleophile or only its ion CH3O- ?

25. ## Calculus

I have to get the result of the serie from 1 to infinite of |sin(4n/π) +3|/ 4^n I really don't know what to do... Please I would really appreciate if anyone can help me

26. ## Math, Inequalities

Prove the following inequalities. Then state for which values the LHS equals RHS. 1) a^2 + b^2 ≥ 2(a-b-1) 2) Given a + b = 1, prove the inequality a^2 + b^2 ≥ 1/2 Please explain how you solved it. Thanks.

27. ## Math - Calculus

g(x)=∫[6x,3x] (u+2)/u-5) du Find g'(x)

28. ## LA

What two idioms would you use for this sentence? She bought a present before being invited to the party.

29. ## algebra

Yogi is 6 years older than Michelle. The sum of their ages

30. ## math

The are 99 dogs. 49 bark consistently while 69 whines. 29 dogs both whine and bark. How many of the dogs neither whine nor bark?

31. ## Calculus

Consider the given function and the given interval. f(x) = (x − 3)^2, [2, 5] (a) Find the average value fave of f on the given interval. fave = (b) Find c such that fave = f(c). c = (smaller value) c= (larger value)

32. ## Math

Adam cuts the cake into equal-sized pieces. Each piece has a length of 5 centimeters, a width of 5 centimeters, and a height of 3 centimeters. How many pieces of cake does Adam have? I stated 75, I used the volume equation l x w x h.

33. ## Physics

An electric heater the temperature of 120g of water in a thin light vessel through 10k in 2 minutes, when placed in 70g of water contained in a metal vessel of mass 0.55kg the temperature rises through 9k in the same time. Calculate from the above The heat

34. ## Algebra

Let a ☺ b = 2a − 3b. What is the value of (1 ☺ 2) ☺ 7?

35. ## French (HELP!)

1. Traveling around the world is a huge part of me. Voyager dans le monde est une grande partie de moi. 2. Traveling opens my eyes and I've (taken) that (chance). Voyager ouvre mes yeux et j'ai (pris) que (chance). 3. Traveling helps me learn who I am.

36. ## Chem

How would the pressure of a gas change if suddenly the intermolecular forces were repulsive rather than attractive?

37. ## Chem

suggest an explanation for the ideal nature of helium compared to the other gases

38. ## math

Students noticed that the path of water from a water fountain seemed to form a parabolic arc. They set a flat surface at the level of the water spout and measured the maximum height of the water from the flat surface as 6 inches and the distance from the

39. ## math

In economics, revenue Upper R is defined as the amount of money derived from the sale of a product and is equal to the number x of units sold times the selling price p of each unit. If the selling price is given by the equation p -1/10x+60 , express

40. ## Math

A landlady currently rents each of her 50 apartments for \$1300 per month. She estimates that for each \$100 increase in rent, two additional apartments will remain vacant. a. Construct a function that represents the revenue R(n) as a function of the number

41. ## Algebra

A company has a fixed monthly manufacturing cost of \$12,000 and it costs \$0.95 to produce a mechanical pencil. They then sell each pencil for \$1.25. How many units must be sold before this company breaks even?

42. ## Math

A total of 45 412 runners participated in the Vancouver Sun Run. Of these runners, 0.85% completed the run in under 40 min. How many runners completed in under 40 mins? In fact, 0.13% of the runners completed the run in less than 34 min. How many runners

43. ## math

Rectangles ABCD and PQRS have the same length-to-width ratio. Calculate the length of rectangle PQRS rectangle abcd: L: 30 cm W: 18 cm rectangle pqrs: L: ? W: 27 cm

44. ## math

A beetle is 1.8cm long. A drawing of the beetle is made using a scale of 5:1. What is the length of the beetle in the drawing?

45. ## Math Limits

lim(as p-->4) of (p^3 - 64) / (4-p) My work: p^3 - 64 = (p-4)(p^2 + 4p + 16) 4 - p = -(p-4) ((p-4)(p^2 + 4p + 16)) / -(p-4) p-4 cancels out -(p^2 + 4p + 16) -((4)^2 + 4(4) + 16) -(16 + 16 + 16) - 48 Is this right?

46. ## Math

If an average catcher takes 1.9 seconds to throw a baseball from home plate to second base on a 90 foot baseball diamond how fast in mph did the catcher throw the ball?

47. ## Chem equilibrium

I don't understand part b NO(g) + O3(g) NO2(g) + O2(g) (a) If 2.50 moles of NO and 3.30 moles of O3 are placed in a 5.30 L flask, what is the equilibrium concentration of O2? Kc = 5.00 ✕ 10-6. .00121 (I got this correct) (b) What percent of the O3

48. ## Chemistry

I have a homework question that says: "Three resonance structures of the following anion are possible. One is given below, but it is incomplete. Complete the given structure by adding non-bonding electrons and formal charges. Draw the two remaining

49. ## Math

Hello, I'm supposed to do the following questions for the equation y=cos(pi/3)x for intervals [0,6] a) For what values of x does the instantaneous rate of change appear to equal 0? b) For what value(s) of x does the instantaneous rate of change appear to

50. ## Math

Bernadette cuts a piece of fabric into four pieces of the same length. After she cuts off 3 feet from one of the pieces, she is left with a piece that is 2 feet long. What is the length of the piece of a fabric she started with?

51. ## math

A rectangular prism is 2 1/3 mm long, 1 1/2 mm wide and 3 mm tall. What is the volume of the prism? V = 2 1/3 x 1 1/2 x 3, or V = 7/3 x 3/2 x 3, or V = 63/6, or V = 10 1/2

52. ## Geometry

Find the area of the shaded region, if the rectangle has dimensions 8m and 18m and the circle is inscribed in the rectangle. I just need an example on how to solve for this. I'm pretty bad at following without examples and my book doesn't show one.

53. ## Psych

One major reason that groups tend to take greater risks than their members would take as individuals is

54. ## algebra

Question 8: What is the value of c such that: x2 + 14x + c, is a perfect-square trinomial? a. 7 b. 98 c. 196 d. 49

55. ## Algebra

Question 1 of 20 5.0 Points Graph the set of points. Which model is most appropriate for the set? (- 1, 20), (0, 10), (1, 5), (2, 2.5) what would graph look like?

56. ## algebra 1

What is the simplified form of the expression? x^8*2y^10*5x^5

57. ## Algebra

Identify the domain and range of the relation {(-9,2), (-4,2), (3,2), (9,2)} thanks for your help. please show answer.

58. ## Algebra

A taco stand sells tacos for \$3.35 easch. The stands expenses for the day are \$210. Define our variables and write an inequality to represent the amount of tacos they need to sell per day to make a profit, and then solve the inequality. Provide your

59. ## algebra

Write a compound inequality that the graph could represent. Please exlain and show if you can. Thank you...

60. ## algebra

a cheetah ran 300 feet in 2.92 seconds. What was the cheetahs average speed in miles per hour? Please show steps.THANKS!!

61. ## physics

The radius of a roll of paper is 7.6 cm and its moment of inertia is I = 2.9 × 10^3 kg·m2. A force of 3.2 N is exerted on the end of the roll for 1.3 s, but the paper does not tear so it begins to unroll. A constant friction torque of 0.11 m·N is

62. ## world history

the site is gatestoneinstitute -Was Iraq War worth it by Richard miniter (I wasn't able to post the link so here's the title of the article) Can someone help me identify what the author's argument is. I know the question is, is the iraq war worth it? but I

63. ## math

In triangle XYZ,A is the midpoint of YZ. The bisector of the exterior angle at X of XYZ cuts YZ produced at B. The line through A parallel to XB, cuts XY at P and XZ produced at Q. 1.PY/PX= ZA/BA = QZ/QX. Please help

64. ## physics

a 2.2 kg ball is dropped from 3m above vertical spring whose spring constant is 450 n/m. a) how far will it compress the spring? b.) what velocity will the ball have when it leaves the spring again?

65. ## Physics

A 5kg box is pulled for a distance of 12m with a force of 20N along frictionless surface. The force is applied at an angle that is 15 deg. above the horizontal. a.) how much work was done by the applied force? b) how fast will the box be moving at the end

66. ## PHYSICS!!!

A skier traveling 12.0 m/s reaches the foot of a steady upward 18 degree incline and glides 12.2 m up along this slope before coming to rest. What was the average coefficient of friction?

67. ## Math

If 8,x,y,z and 20 are in A.P.find x,y,z

68. ## Astronomy

F = GM1M2/R2 = (6.67x10-11 x 1.9891x1030 x 25) / (3000)2 =

69. ## math

The park currently contains 20 wolves and the park rangers are introducing additional wolves at the rate mt(12−t) wolves per month, 0≤t≤12 for some constant m>0 to be determined. However, the park rangers are concerned about damaging the current

70. ## Statistics

What do i do to calculate the 25% mean of 50 variables? Like, how many do I take away from the smallest and largest sides?

71. ## Math

Need help with this please. what percent of 2 2/3 is 3/4? .75/2.6 = x/100 2.6x/2.6 = 75/2.6 answer I came to is 28.846153, is this correct. Need assistance

72. ## Chemistry

A solution containing a mixture of 0.0381 M potassium chromate (K2CrO4) and 0.0769 M sodium oxalate (Na2C2O4) was titrated with a solution of barium chloride (BaCl2) for the purpose of separating CrO42– and C2O42– by precipitation with the Ba2 cation.

73. ## math functions

what is f(x) - g(x) when f(x)=3x-3 and g(x)=x^2-4

74. ## physics

a bock with mass 60kg sits on a surface with static friction Us = 0.51. a spring (k = 69N) is stretched horizontally by 11cm but the block is still stationary. What is the friction force felt by the block when stretched 11cm?

75. ## Math

Charlie has a drawing of his bedroom that measures 8 1/2 inches long by 7 1/4 inches wide. If the real room measures 15 ft in length, what is the rooms width?

76. ## Algebra

Your friend claims that she has a bag of 30 coins containing nickels, dimes, and quarters. The total value of the 30 coins is \$3. There are twice as many nickels as there are dimes. Is your friend correct? Explain your reasoning

77. ## physics

Two workers pull horizontally on a heavy box, but one pulls twice as hard as the other. The larger pull is directed at 25.0 degrees west of north, and the resultant of these two pulls is 350.0 N directly northward. Use vector components to find the

78. ## algebra

-2(x-3y)-3x+5y)-(6x-8y)

79. ## math

write 515% = 3/10 as a mixed number or fraction. answer in simplest terms

80. ## Chemistry

A tanker spilled 5,000l ammonia (approximately 0.2M). How much sulphuric acid is needed to nuetralize ammonia?

81. ## Sequences

Terms 1 through 5 of a sequence are shown below. 8/81 , 4/27 , 2/9 , 1/3 , 1/2 What is the 10th term in the sequence? I have no clue. I tried having common denominator of 81, but that just confused me more. I would try to show more work, but I really don't

82. ## S.S

In the war on terrorism, the targets of united states strikes were a. the northern alliance troops b. pakistan and india c. afghani civilians d. al-qaeda and the Taliban is it A or C?

83. ## collage chemistry

You spill 1500 mg of rubbing alcohol in a box that measures 4 m x 2m x 3m. If the entire sample evaporates into a gas, what is the concentration of the alcohol in milligrams per cubic meter?

84. ## Art

How did plastic revolutionize the art of furniture design? A.) Designers could create works that were soft and colorful. B.) Designers could create works that were sturdy and moldable. C.) Designers could create works that were patterned and sturdy. D.)

85. ## art

which textile techniquw do quilters use to craft blankets 1. cross-stitching 2. weaving 3. stitchery 4. knitting It's weaving or stitchery.. Help please

86. ## L.A

The word propose has been borrowed from the Latin propositus meaning, "set forth" in which sentence is the word propose used correctly A. he felt that propose would do more harm than good B. when you set up a propose, be certain it is correct. C. the

87. ## English

I need a comparison for saying I love you for the first time and an explanation for it.

88. ## English

The transgression of being alone in the State is like bullying in our society. Can you explain to me how this is an analogy. We came up with this analogy for Anthem by Ayn Rand and I don't see how this like an analogy. Please explain.

89. ## Math

1. Given the function rule f(x)= x^2 - 3x + 2, what is the output of f(-2)? A. 12 B. 4 C. -8 D. 0 2. Suppose you earn \$10 each hour you babysit. Which function describes the relationship between your total earnings E and the number of hours you babysit, h?

Find the function that has the greater rate of change As x increases by 1, y increases by 3. The graph has a line and 3 dots. the dots are labeled- x: -1 | 0 | 1 y: 0 | 2 | 4 A. the slopes are equal B. the graph has a greater slope C. the function rule has

Find the function that has the greater rate of change As x increases by 1, y increases by 3. The graph- x: -1 | 0 | 1 y: 0 | 2 | 4 A. the slopes are equal B. the graph has a greater slope C. the function rule has a greater slope**** D. none of the above

92. ## Chemistry (Molarity)

Indicate the concentration of each ion or molecule present: a mixture of 48.0 mL of 0.11 M KClO3 and 28.0 mL of 0.29 M Na2SO4. Assume the volumes are additive. a) [K+] b) [ClO3-] c) [SO42-] d) [Na+] We haven't taken notes on this particular type of problem

93. ## Algebra

An airplane flies 165 miles from point A in the direction 130 degrees and then travels in the direction 245 degrees for 80 miles. Approximately how far is the airplane from A?

94. ## Science last question

Which of the following boxes would have the strongest gravitational pull on a third object positioned at an equal distance from both boxes? Box A: 100 g Box B: 10,000 g A. box b because it has more mass B. box a because it has less mass C. box a because it

95. ## science

4. When a fan is turned on, it changes electrical energy into ______ energy. A. motion B. magnetic C. gravitational D. electromagnet 5. An experiment discovered that a particular material was a poor conductor of electricity. This material would most likely

96. ## art only 2 questionssss

In an effort to help a student understand the concept of shading, which teaching strategy could an educator use to help someone who learns best through hands-on activities? A. explain shading techniques out loud B. write shading techniques on the board. C.

97. ## L.A

In which sentence is the meaning of the word blackmail best represented? A. they hoped that her envy would not cause blackmail B. they reached for the phone, eager to hear the blackmail news. C. they were afraid that blackmail would lead to more demands

98. ## L.A

In the following sentence, what word does the participial phrase modify? Everyone in the annex heard her screaming loudly. A. Everyone B. annex C. heard*** D. her Please check