# Questions Asked onJuly 28, 2012

1. ## Physics

A small car (mass 380 ) is pushing a large truck (mass 1000 ) due east on a level road. The car exerts a horizontal force of 1580 on the truck. What is the magnitude of the force that the truck exerts on the car?

asked by anonymous
2. ## Hypothesis - Statistics

At one school, the average amount of time that tenth-graders spend watching television each week is 18.4 hours. The principal introduces a campaign to encourage the students to watch less television. One year later, the principal wants to perform a

asked by Vivian
3. ## statistics

The number of cell phone minutes used by high school seniors follows a normal distribution with a mean of 500 and a standard deviation of 50. What is the probability that a student uses more than 350 minutes?

asked by Anonymous
4. ## chemistry

The Ksp for calcium fluoride (CaF2) is 3.9 x 10^–11 at 25°C. How many moles of solid NaF must be added to 1.00 L of 0.100 M CaCl2 in order to precipitate CaF2? Please help me set up this ICE table and understand how to solve this!! thank you!!

asked by kellie
5. ## statistics

According to a Harris Interactive poll conducted in 2009, 20% of American adults smoke. In a random sample of 500 American adults, what is the probability that no more than 100 smoke?

asked by nana
6. ## chem 1

Okay there is a question in my book, but go figure it's one that doesn't have the answer in the back of the book for me to check my answer. it says predict the effect each change has on the solubility of (1)Na2CO3(s); (2)N2(g) a. increase in temperature b.

asked by sweatpea
7. ## math

A radio transmission tower is 170 feet tall. How long should a guy wire be if it is to be attached 7 feet from the top and is to make an angle of 30° with the ground? Give your answer to the nearest tenth of a foot

asked by Tony
8. ## chemistry

An aqueous solution is made using 137g of diluted to a total solution volume of 1.30L .Calculate the molarity.molality and mass percent of solution.*assume a density of 1.08g/ml for the solution..

asked by noor
9. ## algebra

A total of $6200 is deposited into two simple interest accounts. On one account the annual simple interest rate is 2%, and on the second account the annual simple interest rate is 4%. The amount of interest earned for 1 year was$148. How much was invested

asked by Emmett
10. ## statistics

Expected relative frequency probability represents a calculated probability based on large numbers of trials. In an example of a deck of 52 cards, where you randomly pull cards from the deck and record what they are, you find that over 1000 random draws,

asked by carlos
11. ## statistics

(3,5,7,9,11)U(3,6,9,12,15) would correctly be expressed as

asked by carlos

The U.S. government categorizes body weight status as ________. A. Underweight, healthy weight, overweight, obese B. Healthy, unhealthy C. Underweight, healthy, overweight D. Thin, healthy, heavy, obese I HAVE NO CLUE PLEASE HELP OR GIVE ME HINTS! :$asked by Aya 13. ## Literacy Scholarly articles generally include which of the following elements? A. A bibliography or a list of works cited. B. A complete biography of the author or authors. C. Detailed diagrams of the concepts presented. D. Criticism by academic peers asked by Deandrah 14. ## maths the circular pond has radius r. the area of a pond whose radius is 6m more than r is 4 times the area of the the first pond. the radius r of the first pond equals asked by rifkhan 15. ## algebra 2 1.Simplify the difference. n^2 - lOn+24 9 / n^2 - 13n + 42 — 7 A. n-13/n-7 asked by Anonymous 16. ## Physics Three masses that are 10 kg each are located at the corners of an equilateral triangle, with side length of 0.55m. What is the magnitude of the total force acting on one mass due to the other two masses? The answer is supposed to be 3.82e-08 N. Any help is asked by James 17. ## statistics An extreme score that sets apart in value from the general distribution of values with which it is connected is known as…? asked by carlos 18. ## Math In the list of five measurements shown below, one is blurred. What must this value be, if the mean of the five measurements is 7? 8 5 10 3 # asked by Jordan 19. ## Math-one more The average length of time, per week, that students at a certain university spend on homework is normally distributed with a mean of 24.3 hours and a standard deviation of 1.4 hours. Jane tells her parents she spends more time studying than 75% of the asked by Jordan 20. ## microeconomics the following information applies to the market for a particular items in the absence of aunit excise tax. ($4,50,200) ($5,75,175) ($6,100,150) ($7,125,125) ($8,150,100) ($9,175,75) a. according to the informaton above, in the absence of a unit excise tax, asked by joikia 21. ## Chemistry Use Ksp to find the concentration of an ion in a saturated solution. Consider a 2.50E-3 M solution of Al2(SO4)3. (a) What [OH^-] is required to initiate precipitation of Al^3+ from the solution? (b) What [OH^-] is required to lower the [Al^3+] to 2.00E-7 M asked by Jo 22. ## Pharmacy math How much dil HCL (10% w/w) HCL specific gravity = 1.045 would be required to prepare 2000ml of a solution containing 0.005 molar HCL? HCL m.w.t = 36.5 Who try to solve for me. Please help The right answer is 34.9ml asked by Fai 23. ## MATH Find the amount of interest and the monthly payment for the loan. Purchase a living room set for$3,800 at 12% add-on interest for 3 years.

asked by DAVID
24. ## Explanation of Maths B Question

An example of a wine glass design, using three equations, is given below. The base of the wine glass is defined by a quadratic equation, the stem by a linear equation and the body of the glass by a square root function. The difficult part of the

asked by Nina
25. ## Persoanl finance

1. Jenny Franklin estimates that as a result of completing her master’s degree, she will earn $7,000 a year more for the next 40 years. a. What would be the total amount of additional earnings? 40 yrs * 7,000/ yr =$280,000 I don't understand how to get

asked by dawn
26. ## Hea;th

Empty calories are defined as ________. A. Calories from dairy products only B. Calories from low-fat foods and/or fruits and vegetables C. Calories from water and other foods or beverages that have zero calories D. Calories from solid fats and/or added

asked by Aya
27. ## Maths-Trigonometry

a kite is attached to a string that is 15m long. If the string makes an angle of 26 degrees to the horizontal the height of the kite is.

asked by L
28. ## SCIENCE

chemical formula for Fe + ZnSO4

asked by ankula
29. ## science

a canoe displaces 100 L of water weighs 9.8 NL what is the bouyant force on the canoe

asked by patience
30. ## Health

The U.S. government categorizes body weight status as ________. A. Underweight, healthy weight, overweight, obese B. Healthy, unhealthy C. Underweight, healthy, overweight D. Thin, healthy, heavy, obese

asked by Aya
31. ## health

Not eating breakfast has been associated with _________, especially among children and adolescents. A. Increased energy B. Excess body weight C. Losing weight D. None of the above i think its A

asked by Aya
32. ## 11 Maths B

Design a wine glass that uses at least 5 different equations to form the outline of the shape. At least half of your equations must be curves. It is easier if the design is done with the glass on its side, that is, with the axis of the design running along

asked by Nina
33. ## What does this Maths B question mean?

How do I do thi question? An example of a wine glass design, using three equations, is given below. The base of the wine glass is defined by a quadratic equation, the stem by a linear equation and the body of the glass by a square root function. The

asked by Nina
34. ## statistics

Surgery vs. placebo for the knee pain: Refer to Example 10. Is Arthroscopic Surgery Better than Placebo? Here we show MINITAB output comparing mean knee pain scores for the placebo (group 1) to debridement arthroscopic surgery (group 2). a) State and

asked by david
35. ## chemistry

Glutamate (Glu–) is the conjugate base form of glutamic acid (HGlu). The Ka of glutamic acid is 5.012 x 10^–5. You titrate 50 mL of 0.10 M sodium glutamate solution with 0.05 M HCl solution. Calculate the pH of the solution at the equivalence point.

asked by kellie
36. ## Physics

3. A projectile is launched at 10.0 m/s in a direction 45.0 degrees above the horizon. It hits the ground 10.0 m below its initial position. What is its speed just before hitting the ground? Ignore air resistance. The answer is supposed to be 17.2 m/s.

asked by James
37. ## statistics

it is stated that the standard deviation sample of the is 7.6 (n = 26). Test the claim to a significance level of 0.10 that the population standard deviation was greater than 7.0. Round all answers to 3 decimal places.

asked by geety
38. ## Health

A person’s daily sodium intake should be reduced to less than ________ milligrams and further reduced to ________ milligrams among persons who are 51 and older and those of any age who are African American or have hypertension, diabetes, or chronic

asked by Aya
39. ## PHysics

What is the total energy of a 15-kg mass attached to a spring oscillating horizontally with an amplitude of 20 cm and an angular frequency of 32 rad/s?

asked by Vladimir
40. ## English

Antonyms of: Careful: False: ignorant: A: uneducated B: reckless C: intelligent D: untrue E: Genuine I think careful is B false: E ignorant: A

asked by Emma
41. ## MATH

2,100 LOAN AT 13% ADD ON INTEREST FOR 3 YEARS. HOW DO I CALCULATE THE APR?

asked by LaCresha
42. ## Maths B question - population

The population P of a particular city, Metropia, is growing at a rate proportional to the current population. The population at time t years is modelled by the equation P = Aekt where A and k are constants. (a) With the aid of appropriate examples, explain

asked by Nina
43. ## Literacy

Which one of the following services is provided through the Ask-a-Librarian feature in the Penn Foster Library? A. An analysis of an issue presented in your course B. A historical date or the source of a quote C. An informed opinion on how to improve your

asked by Deandrah
44. ## Algebra 1

The University of Selectivity had an acceptance rate of 20 percent for the year 2006, with an incoming class of 300 freshmen. Between 2006 and 2007, the number of applications they received increased by 30 percent, but the number of students admitted

asked by Anonymous
45. ## Physics- Repost (Answer did not make sense)

In the circuit below, at time t = 0, the switch is closed, causing the capacitors to charge. The voltage across the battery is 12 V The circuit: flickr. com/photos/ 68751220@N03 /6848519773/ A)Calculate the time constant for the RC circuit B)Calculate the

asked by Dan
46. ## Math

I am wondering how to get the answer 4324 by multiplying 25.11 *3.14 I am constantly getting different answers the answer i am consistently getting is 8284.84 and 7944.54 I really need help!

asked by Javohn
47. ## Algebra

Solve using set builder notation, show all work. 12x-25 is greater than or = to 3x-5(x+6)

asked by Ellen
48. ## MAth!

In the list of five measurements shown below, one is blurred. Supply a fifth value that would make the median 8. 8 5 10 3 #

asked by Jordan
49. ## health

identify two key health care related challenges of the aging population such as increase in health care cost, increase in prescription drug cost or the need for in home medical care

asked by Archie
50. ## calculus

So I am suppose to evaulate this problem y=tan^4(2x) and I am confused. my friend did this : 3 tan ^4 (2x) d sec^ 2x (2x)= 6 tan ^4 (2x) d sec^2 (2x) She says it's right but what confuses me is she deriving the 4 and made it a three? I did the problem like

asked by Anonymous
51. ## does anyone

known the architect of the Mosque of Ibn Tulun ?

asked by Anonymous
52. ## medical transcription

Could someone review this and make sure it appears to be correct? Had a repeat magnetic resonance imaging (MRI) of the head. She had a lesion seen in the right frontal lobe on previous computed tomography (CT) and MRI scanning. This lesion has not changed

asked by marla
53. ## Explanation of Maths Question

Can someone please explain what does these questions mean? Design a wine glass that uses at least 5 different equations to form the outline of the shape. At least half of your equations must be curves. It is easier if the design is done with the glass on

asked by Nina
54. ## math

Frank's cell phone package costs $20 per month and an additional$0.05 per text. Josie pays $15 per month and$0.10 per minute. Determine the linear system that could be used to find out when their monthly bills would be the same.

asked by David

parking in a student lot cost $1 for the first half hour and$1.75 for each hour thereafter. A partial hour is charged the same as a full hour. What is the longest time that a student can park in this lot for $9 what is the answer asked by christina 56. ## Literacy Search engines are most useful for finding A. scholarly journal articles. B. books in a library. C. course information. D. Web sites. asked by Deandrah 57. ## statistics 5 to the third power (i.e., 5x5x5) would equal asked by carlos 58. ## mechanics resolve a force of 120n acting at an angle of 30degree with respect to horrizontal. asked by krunal 59. ## Math A basket containing 80 eggs weighs 2kg 300g. The same basket containing 60 eggs weighs 1kg 700g. Find the mass of the empty basket. asked by Marcus 60. ## science A mixture of {\rm NaCl} and {\rm NaBr} has a mass of 2.10{\rm g} and is found to contain 0.71{\rm g} of {\rm Na} What is the mass of {\rm NaBr} in the mixture? asked by nurul 61. ## Health! Mean intake of seafood in the United States is approximately 3- 1/2 ounces per week, and increased intake is? A. Not advised B. Believed to cause harm C. Not likely to help or harm D. Recommended asked by Aya 62. ## HEALTH I HAVE NO CLUE PLEASE HELP!! : Increase the amount and variety of seafood consumed by choosing seafood in place of some meat and poultry. A. Fruits B. Some meat and poultry C. Vegetables D. Breads asked by Aya 63. ## physics A 11.3 kg cart slides down a rough, inclined ramp, angled 24o with respect to the horizontal. At time t = 0 s, the velocity of the cart is 2.75 m/s directed down the ramp. At time t = 0.36 s, the velocity of the cart is 4.16 m/s directed down the ramp. asked by Mike 64. ## math If the principal P =$500, the interest I = $135, and the rate r = 9% what is the time? asked by LaCresha 65. ## chemistry How much ethanol is required to make a 2L of a 70%ww solution? asked by Larry 66. ## science how make a hybridization of pcl5 with dygram asked by sanket 67. ## statistics it is stated that the standard deviation sample of the is 7.6 (n = 26). Test the claim to a significance level of 0.10 that the population standard deviation was greater than 7.0. Round all answers to 3 decimal places. asked by geety 68. ## Elementary Algebra I need an explanation on how to work out negative exponents. Example: (3a^-2b^3)^-2 asked by Wanda 69. ## PHI103 : After being told that she is being punished for lying, a child responds by telling her mother that she also lied. this responce may involve which fallacy asked by Anonymous 70. ## Math/physics Known factors-weight 105 g---speed at start 60 mph---distance traveled 70 yds. Questions ,what is the rate of decelleration?, At what yard marker does it decellate to 35 mph For each 5 feet higher from start - how much farther does it travel. Thank you for asked by Tom 71. ## Math I have (3.14) (19.36) (12) and i am trying to find out how to correctly multiply them Also i am trying to find value of cylinders asked by Javohn 72. ## the five c's I have completed the worksheet for the five c's. Some of my answers are the same as on here, however some are not. I would love to have a clear understanding of which answer goes with which question. Mainly, "this makes you a better credit risk to the asked by Anonymous 73. ## billing and coding help with the ICM-9-CM Book can't find the codes for my assignment. I am trying to understand this book but I am having a hard time can you tell me how to use this book to get my codes? asked by Anonymous 74. ## math 250 is 12% of what amount? asked by Anonymous 75. ## Math ( i just need these two to finish my workshet Show the solutions of 1. If a = 4, b = 3, and A = 36o. 2. If a = 3, b = 4, and A = 48.59o Finding a "solution" means solving for all missing sides and angle measures in each triangle.) asked by Tony 76. ## geometry Given parallelogram ABCD, find the values of x and y. AX = y + 4 XC = 2y - 8 DX = x + 5 XB = 3x asked by victoria 77. ## design 1. A person with a square face shape and a rectangle body shape has what bodyline? A. Straight B. Sharp-straight.(yes) C. Soft-straight D. Soft-straight II 2. A suit with rounded lapels and a shawl collar would work best for a woman with a _______ asked by Anonymous 78. ## HEALTH! What are the four basic food safety principles that work together to reduce the risk of food borne illnesses? A. Wash, Cook, Eat, Clean B. Clean, Separate, Cook, Chill C. Clean, Cook, Store, Disinfect D. None of the above b? asked by Aya 79. ## HEALTH In striving to meet the 2010 Dietary Guidelines for Americans, one should consume more of certain foods and nutrients such as ________. A. Fruits B. Carbohydrates C. Energy drinks D. Breads i think its Fruits :) asked by Aya 80. ## Math If the principal P =$900, the interest I = $819, and time t = 7 years, what is the rate? asked by LaCresha 81. ## math Interest=$432 r=6% t=8 years How do I calculate the principal and future value?

asked by LaCresha
82. ## English

What is an "inside address" for a letter?

asked by Emma