# Anonymous

Questions and responses by Anonymous, page 25
1. ## Science

a 5 kg skateboard moves at 7 m/s^2 . What is the force of the skateboard? 35 N

2. ## Math

During exercise, the recommended maximum heart rate in beats per minute is modeled by the formula M=176-0.8A, where M is the maximum heart rate and A is the person’s age. Approximately, at what age would you have a recommended heart rate in beats per

3. ## Rectangular coordinates to polar coordinates

1) I'm asked to find 2 sets of polar coordinates for the point for 0≤ θ< 2pi from a given pair of rectangular coordinates . For instance, one of the coordinates was (-3,4). I found r = plus and minus 5.Then θ= arctan (y/x)= arctan (4/-3)= -.9273 I know

4. ## math

Find the interest due to the bank on a loan of \$1,000 at 7.5% for 280 days.

5. ## Grammar

Rewrite the paragraph, correcting all errors in subject-verb agreement. In this article about Arthur Ashe, there is several stories about the tennis player's inner strength. Here is some examples: Ashe did not let the other players know what he was

6. ## physics

In a dentist's office, an X-ray of a tooth is taken using X-rays that have a frequency of 7.01 1018 Hz. What is the wavelength in vacuum of these X-rays?

7. ## College Chemistry - Science

In an acid-base experiment at 25.0°C, a sodium hydroxide solution was standardized against KHP. The average value for the concentration of the sodium hydroxide solution was calculated to be 0.0125 M. This solution was used to titrate the phosphoric acid

8. ## english

29. Which of the following is not a major conflict in Katherine Ann Porter's short story "He"? (1 point) A)the difficulty a family has trying to survive financially B)the struggle of a family to take care of a disabled child C)the concern of a family for

9. ## Math

Which of the following is equal to (n - 3)^2 if n = 11? A. (n + 6) (n - 6) B. (n + 5) (n - 7) C. (n + 4) (n - 8) D. (n + 3) (n - 9) E. (n + 2) (n - 10)

10. ## Math

A company’s profit is described by the equation P(x) = – 5x^2 + 300x + 15,000 where x is the price in dollars that the company charges for its product. What should the company charge for the product to generate the maximum profit? a.) \$20 b.) \$30 c.)

11. ## Statistics

The per-store daily customer count (i.e., the mean number of customers in a store in one day) for a nationwide convenience store chain that operates nearly 10,000 stores has been steady, at 900, for some time. To increase the customer count, the chain is

12. ## speed

a train approaching a crossing changes speed from 25 m/s to 10 m/s in 240 s. How can the train's acceleration be described?

13. ## physical science

How much time is needed for a car to accelerate from 8.0 m/s to speed of 22 m/s if the acceleration is 3.0 m/s^2?

14. ## algebra

suppose that S varies directly as the 2/5 power of T, and that S=8 when T=32. Find S when T=243.

15. ## Science

Why is freshwater a limited resource? A. because most water on Earth is in lakes B. because most water on Earth is in clouds C. because most water on Earth is in the ground D. because most water on Earth is saltwater D

16. ## Biology

Why is feedback inhibition a useful thing for enzyme reactions in a cell? Are there biology tutors in this forum??

17. ## SCIENCE

which of the following would most likely lead to increased biodiversity

18. ## Health (Ms. Sue)

1. Summarize how common substances can trigger allergic reactions. A: Common substances can trigger allergic reactions when immune systems cells encounter a foreign particle, sending out chemical signals that cause the body to react? 2. Identify how people

19. ## Health (Ms. Sue)

1. What are two ways that society could deal with future concerns about genetic information? A: ? 2. Identify how keeping person health records can help a person cope with hereditary diseases. A: Keeping personal health records can help a person cope with

20. ## Algebra

A candy store keeps track of its sales during the month of October. Below is the number of sales for the first, second, third, and fourth weeks of the month. Which graph could represent the data shown below? Week- 1,2,3,4 Candy Sales- 97,168,259,375

21. ## Algebra

A school is keeping track of the number of tickets remaining for its end-of-year festival. Below is the number of sales for the first, second, third, and fourth weeks of the month leading up to the festival. Which graph could represent the data below?

22. ## math

translate 112 is the product of Diane's height and 8 to an equation

23. ## CHEMISTRY

Please explain the answer. Which statement about this reaction is correct? 2Fe(s)+3CO2(g)--->Fe2O3(s)+3CO(g) delta H = 26.6 kJ A. 26.6 kJ of energy are released for every mole of Fe reacted B. 26.6 kJ of energy are absorbed for every mole of Fe reacted C.

24. ## Algebra Check

What is the domain of the function below? ((0,2),(3,1) (5,2) (8,4)) a. (1,2,4) b. (0,3,5,8)** c. (0,1,2,3,4,5,8) d. ((0,2),(3,1) (5,2) (8,4)) Is the following relation a function? ((0.3,0.6), (0.4,0.8), (0.3,0.7), (0.5,0.5)) a. yes b. no** c. cannot be

25. ## Computer Programming using python

Assume s is a string of lower case characters. Write a program that prints the number of times the string 'bob' occurs in s. For example, if s = 'azcbobobegghakl', then your program should print Number of times bob occurs is: 2 For problems such as these,

26. ## English

Check my answers please 9. The author of "My Brother's Keeper" mainly develops Jamie’s character through his actions *dialogue and thoughts the narrators description other’s reaction to him 10. In "My Brother's Keeper," what does Ted want Jamie to do

27. ## Algebra I

4 - t = 3(t - 1) - 5 a. 3 b. 6 c. no solution d. identity A? 8x - 2(x + 1)= 2(3x - 1) a. 0 b. 2 c. no solution d. identity D? 3(c - 2)= 2(c - 6) a. 2 b. -6 c. no solution d. identity B? 0.5(m + 4) = 3(m - 1) a. -2 b. 2 c. no solution d. identity B?

28. ## pressure

an ideal gas in a sealed container has an initial volume of 2.70L. at constant pressure, it is cooled to 25.00 C where its final volume is 1.75L. what was the initial temperature?

29. ## Geography

How do landforms and climate affect the distribution of population? My answer: Landforms and climate affect this due to some lands being unsuitable for human habitation, which influences where people live, resulting in population distribution.

30. ## physics

A student throws a ball vertically upward such that it travels 7.4m to its maximum height. Part A If the ball is caught at the initial height 2.7s after being thrown, what is the ball’s average speed? Part B What is the ball’s average velocity?

31. ## Math

Six nickels is what percent of a dollar?

32. ## Geometry

Point Y lies on line segment XZ, between X and Z. The (x,y) coordinates for X and Z are (7,2) and (-3,-3), respectively. If the ratio of line segment XY to line segment YZ is 2 to 3, what are the (x,y) coordinates of Y?

33. ## Chemistry help

2.00g of NaOH are dissolved in water to make 2.00L of solution. What is the concentration of hydronium ions, [H3O+], in this solution?

34. ## biology

Relate membranes to energy metabolism, redox reactions, and ATP synthesis in both eukaryotic and prokaryotic cells.

35. ## bio

You want to design a breathing machine that will bring 500 mL of air into the lungs. You begin with 100 mL of air at 2 atm of pressure. How would you change the pressure in your machine to accomplish your goal?

36. ## physics

The speed of a moving bullet can be determined by allowing the bullet to pass through two rotating paper disks mounted a distance d apart on the same axle (Fig. below). From the angular displacement of the two bullet holes in the disks and the rotational

37. ## Algebra 2 ..

Simplify. 1. (1/log base 3 of 60)+ (1/log base 4 of 60)+ (1/log base 5 of 60) 2. (log base 16 of x)+ ( log base 4 of x) + (log base 2 of x)=7

38. ## college physics

Juggles the clown stands on one end of a teeter-totter at rest on the ground. Bangles the clown jumps off a platform 2.5 m above the ground and lands on the other end of the teeter-totter, launching Juggles into the air. Juggles rises to a height of 3.8 m

39. ## physics

A spherical mirror is polished on both sides. When the concave side is used as a mirror, the magnification is +2.7. What is the magnification when the convex side is used as a mirror, the object remaining the same distance from the mirror? If the object is

40. ## chemistry

What volume of 0.1 M NaOH is required to neutralize 30 mL of 0.1 M HCl?

41. ## Chemistry

Nitric oxide reacts with chlorine to form nitrosyl chloride, NOCl. Use the following data to determine the rate equation for the reaction. NO + (1/2)Cl2 -> NOCl Expt.[NO] [Cl2] Initial rate 1 0.22 0.065 0.96 M/min 2 0.66 0.065 8.6 M/min 3 0.44 0.032 1.9

42. ## maths

Find five numbers in A.P. whose sum is 12.5 and the ratio of first to the last is 2 : 3.

43. ## financial math

Mary is buying several items that cost \$128.25 total. She is using a store coupon for 35% off her purchases. She has to pay 4% sales tax. Calculate the total cost of the items.

44. ## Math

If a wheel turning at a constant rate completes 100 revolutions in 10 sec what is its angular speed?

45. ## maths-urgently needed

The volume of a cylinder is 48.125 cm3, which is formed by rolling a rectangular paper sheet along the length of the paper. If cuboidal box (without any lid i.e., open at the top) is made from the same sheet of paper by cutting out the square of side 0.5

46. ## investing

Which of the following statements is true about financial planning? A. Any kind of financial expert (such as a stockbroker, lawyer, or accountant) can help you develop a comprehensive financial plan. B. Once you have painstakingly developed a financial

47. ## Pre-Algebra

One hundred nautical miles equals about 185 kilometers. To the nearest kilometer, how far in kilometers is 290 nautical miles?

48. ## Math

Suppose the supply and demand for a certain videotape are given by: supply: p=1/3q^2; demand: p=-1/3q^2+48

49. ## Physics

The box of a well-known breakfast cereal states that one ounce of the cereal contains 129 Calories (1 food Calorie = 4186 J). If 2.55% of this energy could be converted by a weight lifter's body into work done in lifting a barbell, what is the weight of

50. ## Math

If f(x) + x^(2)[f(x)]^5 = 34 and f(1) = 2, find f '(1).

51. ## physics

Two artifacts in a museum display are hung from vertical walls by very light wires, as shown in the figure.Find the tension in the horizontal wire ifw=158Nandm=30.0 kg.

52. ## calculus

a man on a dock is pulling in a boat by means of a rope attached to the bow of the boat 1ft above the water level and passing through a simple pulley located on a dock 8ft above the water level. if he pulls in the rope at a rate of 2ft/sec, how fast is the

53. ## chemistry

How many sodium ions are present in 325 mL of 0.850 M Na2SO4?

54. ## Physics

An automobile tire is rated to last for 50000 miles. To an order of magnitude, through how many revolutions will it turn over its lifetime?

55. ## english

Correct the errors in dangling and misplaced modifiers by rearranging or rewriting the following sentences. 1.After boarding Hard Luck Airlines, the meals convinced us to return by ship.

56. ## calculus

Find the x-coordinates of all points on the curve f(x) = sin 2x − 2 sin x at which the tangent line is horizontal. (Enter your answers as a comma-separated list. Use n to represent any integer.)

57. ## math

what are the common factors of 120 and 420

58. ## math (statistics)

the set of integers between 1 and 50 divisible by 8

59. ## art 101

Contrast The Elevation of the Cross by Rubens with Rembrandt’s Return of the Prodigal Son. Explain how each work reflects the artist and his temperament. How does each work mirror sociopolitical environment of each artist? Use one example from

60. ## physics

A copper block is removed from a 310 C oven and dropped into 1.10 kg of water at 20.2 C. The water quickly reaches 25.4 C and then remains at that temperature.what is the mass of the block?

61. ## Physics

Two crewmen pull a boat through a lock, as shown in the figure. One crewman pulls with a force of F1 = 145 N at an angle of θ = 32° relative to the forward direction of the raft. The second crewman, on the opposite side of the lock, pulls at an angle of

62. ## Math

Find 9 tens more than 327508

63. ## finance300

3) Your uncle has \$280,000 invested at 7.5%, and he now wants to retire. He wants to withdraw \$35,000 at the end of each year, starting at the end of this year. He also wants to have \$25,000 left to give you when he ceases to withdraw funds from the

64. ## American lit.

In which sentence does the underlined noun clause function as a direct object. A. _whoever works as a lifeguard_ needs special training. B. We like to set up our blanket in _whatever place gets some shade_. C. Experts say that one of the best times to put

65. ## statistics

The actual weights of bags of pet food are normally distributed.The mean of the weights is 50.0lb,with a standard deviation of 0.2lb. Sketch a normal cuve for the distribution.Label the x-axis at one,two,and three standard feciation from the mean,in

66. ## physics

A stone is suspended from the free end of a wire that is wrapped around the outer rim of a pulley, as shown in the figure (see the figure ). The pulley is a uniform disk with mass 10.4 and radius 51.0 and turns on frictionless bearings. You measure that

67. ## Math

A flag pole is supported by two wires, each attached to an anchor in the ground 10m from the base pole. The wires have angles of elevation of 37 degrees and 47 degrees

68. ## statistics

The probability that a house will develop a leak is 5%. If 20 house holds are randomly selected, what is the mean number if houses that developed leaks?

69. ## chemistry

Consider the cell: (Pt) H2/H+ || (Pt) H+/H2. In the anode half-cell, hydrogen gas at 1.0 atm is bubbled over a platinum electrode dipping into a solution that has a pH of 7.0. The other half-cell is identical to the first except that the solution around

70. ## communication

Which of the following is NOT true of nonverbal communication? A.It is continuous. B.It uses a single channel. C.It usually can be controlled. D. It is unstructured and follows few rules. I think it is A. But not to sure

71. ## math

A purse contains \$3.65 in quaters and dimes. There are 9 more quaters than dimes. Find the number of quaters and dimes.

72. ## geometry

A triangle has side lengths of 14 cm, 48 cm, and 50 cm is it acute, obtuse, or right

73. ## physics

A wooden cube of side 10cm has mass 700g.What part of it remains above the water surface while floating?

74. ## GA perimeter

What is the specific heat of a metal if 7.74 x 103 J of energy is required to warm a 75.0 g sample of the metal from 10 °C to 125 °C?

75. ## Physics

Two point charges are 10.0 cm apart and have charges of 2.0 μC and –2.0 μC, respectively. What is the magnitude of the electric field at the midpoint between the two charges? 8.99*10^9(2*10^-6/.025)=719200 Two equal charges are separated by 3.7 x 10-10

The total number of interior angles in two regular polygons is 17, and the total number of diagonals is 53. How many sides does each polygon have? Show work and explain.

abel belle, and cindy have \$408 altogether. belle has \$7 more than cindy \$5 more than abel how much does abel have

78. ## Biology

When elongated, tube-shaped cells from the lining of the intestine are treated with a certain chemical, the cells sag and become round blobs. The internal structures disrupted by this chemical are probably _____. A. cell junctions B. microtubules C. rough

79. ## English

The following lines are from Alexander Pope's "An Essay on Criticism." In it, Pope (1688-1744) gives his opinions on the secret of good writing, opinions that were very consistent with his times. Answer all questions based upon these lines. Those RULES of

80. ## arithmetic

The 8th term of an A P is 5times the third term while the 7th term is 9 greater than the 4th term.what are the first five term

81. ## chemistry

a 2.00-liter sample of a gas has a mass of 1.80 grams at STP. What is the density , in grams per liter , of this gas at Stp?

82. ## finance

Sterling optical and Royal Optical both make glass frames and each is able to generate earnings before interest and taxes of \$120,000.Debt @12% \$600,000 Debt @12% \$200,000, Common stock, \$5 par 400,000 Common stock, \$5 par 800,000,Total 1,000,000 Total

83. ## calculus 3

A rectangular box has length 20 inches, width 14 inches, and a height of 13 inches. Find the angle between the diagonal of of the box and the diagonal of its base. The angle should be measured in radians.

84. ## statistics

In one elementary school, 200 students are tested on the subject of Math and English. The table below shows the mean and standard deviation for each subject. Mean SD Math 67 9.58 English 78 12.45 One student’s Math score was 70 and the same

85. ## Geometry

ABCD is a trapezoid. If AC is equal to 8x - 3 and BD is equal to 2x + 9, find the value of x so that ABCD is isosceles.

86. ## trig

sin2xcosx-sinx=0 interval(0,2pi)

87. ## Statistics

A group of 6 children are choosing colors of pencils to use to draw a picture. The available colors are black, red, and blue. If the second child refuses to use red pencils and the third child refuses to use blue pencils, then how many ways are there for

88. ## vocab

Using a dictionary look up and then list four definitions of the word nice that you would use in a paragraph to develop this topic sentence: "The word nice is surprisingly ambiguous."

89. ## geometry

A cylinder is inscribed in a cube. If the edge of the cube is 3" long, find the volume of the cylinder.

90. ## English

Death is a commonplace in the novel. Do Hal, Mercedes, and Charles deserve their fate? Why or Why not?

91. ## Algebra II

The bear population increases at a rate of 2% per year. There are 1573 bear this year. Write a function that models the bear population. How many bears will there be in 20 years?

92. ## how to write 2nd may 2011 in 5 letters without usi

how to write 2nd may 2011 in 5 letters without using numbers

93. ## physics

A block of mass m = 5 kg is attached to a spring (k = 35 N/m) by a rope that hangs over a pulley of mass M = 7 kg and radius R = 4 cm, as shown in the figure. Treating the pulley as a solid homogeneous disk, neglecting friction at the axle of the pulley,

94. ## geometry

if ED=10 and DB=3x-8 whats the lenght of EB

95. ## marketing

47) When segmenting broad product-markets, cost considerations tend A. To lead to more aggregating. B. To lead to a large number of small, but very homogeneous, product-market segments. C. To be unimportant as long as the segmenting dimensions are

96. ## geometry

The measure of a single angle in a regular octagon is (4x + 12)°. Find the value of x. Show equations and all work that leads to your answer.

A company decides to investigate the amount of sick leave taken by its employees. A sample of seven employees yields the following number of sick leave taken in the past year 1 1 3 0 1 7 1 a. Find and interpret the range

98. ## physics

You walk 53 m to the north, then turn 60° to your right and walk another 45m. Determine the direction of your displacement vector. Express your answer as an angle relative to east.