# Questions Asked onSeptember 15, 2011

1. ## Math

A set of dominoes has 28 dominos. There are 7 dominos called doubles with the same number of dots on each end. If Sara and Jake each take a rein picking domino at random and replacing it. What is the probability that they will both pick a double?

2. ## Biology

Can someone please check my answers for the following 'choose the best answer'? Which of the following cellular functions would be most directly related to a malfunction of the Golgi apparatus? a)ATP production b)degradation of macromolecules c)secretion

3. ## Finance

You are a hard-working analyst in the office of financial operations for a manufacturing firm that produces a single product. You have developed the following cost structure information for this company. All of it pertains to an output level of 10 million

4. ## Finance

Allison Radios manufactures a complete line of radio and communication equipment for law enforcement agencies. The average selling price of its finished product is $180 per unit. The variable cost for these same units is$126. Allison Radios incurs fixed

5. ## Geometry

A 30-foot cable is suspended between the tops of two 20-foot poles on level ground. The lowest point of the cable is 5 feet above the ground. What is the distance between the two poles?

6. ## programming

How to write a program to create a class roster using an array? The program prompts the teacher to enter student’s names and GPA values. Display the results.

7. ## Physics

A hockey puck is sliding on frictionless ice. It slams against a wall and bounces back toward the player with the same speed that it had before hitting the wall. Does the velocity of the hockey puck change in this process?

8. ## ochem

Predict a reasonable melting point of a mixture prepared by combining 25mg of biphenyl (mp=70-71C) with 75mg of acetyl salicylic acid (mp=138-140C). Answer should have temps in it.

9. ## physics

A baseball thrown at an angle of 65.0^\circ above the horizontal strikes a building 16.0 {\rm m} away at a point 5.00 {\rm m} above the point from which it is thrown. Ignore air resistance. a) find the magnitude of the initial velocity of the baseball. b)

10. ## chemistry

calculate the freezing point of 0.1m of a)NaCl (b) glacial acetic acid

11. ## Decision science

A wholesaler of stationery is deciding how many desk calendars to stock in inventory for the coming year. It is impossible for him to reorder, and leftover units are worthless. The following numbers indicate the possible demand levels: Demand in 000's 100

12. ## Uni Math

Simplify and state the domain: x'2 +1 . x'2 - 9 x'2 + 2x – 3 x'2 – 2x -3

14. ## Economics

The # of kids who were vaccinated against the flu (x) and # of kids who currently suffer from flu.(y) Positive or negative correlation and x causes y or y causes x or both. I know it's negative correlation but not sure of causation? Help

15. ## Physics

Im having trouble understanding the concept of pressure. Help please! What is the pressure at the bottom of a tube of mercury that is 0.2 m deep? An elephant with a mass of 1000 kg stands on a circus platform that weighs 50 kg. The area of the bottom of

16. ## Economics

You have just started work for a small company, FitCo, that develops private fitness clubs in small towns. FitCo buys or leases a local hotel or motel, then renovates to provide a gym, swimming pool, sauna, Jacuzzi, and a small café where patrons can buy

17. ## SCIENCE

When the following are placed in water, for which of them will the buoyant force be more than as its weight? A) an ice cube B) a piece of frozen glycerin C) a gold ring D) a piece of aluminum foil 2. Sometimes when I get in my swimming pool I take a

18. ## Physics

Im having trouble understanding the concept of pressure. Help please! What is the pressure at the bottom of a tube of mercury that is 0.2 m deep? An elephant with a mass of 1000 kg stands on a circus platform that weighs 50 kg. The area of the bottom of

19. ## AP Chemistry

Calculate the volume of a 36% solution of hydrochloric acid (density = 1.50g/mL, molar mass = 36 g/mol) required to prepare 9 liters of a 5 molar solution. A. 1 liter B. 2 liters C. 3 liters D. 4 liters E. 5 liters

20. ## SCIENCE

When the following are placed in water, for which of them will the buoyant force be more than as its weight? A) an ice cube B) a piece of frozen glycerin C) a gold ring D) a piece of aluminum foil 2. Sometimes when I get in my swimming pool I take a

21. ## Maths

Find the equation of a parabola with vertex(4,9)and y-intercept(0,-7?) Can working out please be provided?

22. ## physics

a stone is dtropped from the top of 40m heigh calculate its speed after 2 seconds .Also find the speed ith the stone strikes the ground.

23. ## Maths

Sketched are the graphs of f(x)+x squared +4x-12,calculate the lenght of rs if s is the turning point of the para bola

24. ## biology

describe the events that take place in the eye when you come from a dark room to the outside where there is light

25. ## english

The meanings of blow up,account for,call off,talk into and drag on.

26. ## Chemistry

If 32.0 mL lead(II) nitrate solution reacts completely with excess sodium iodide solution to yield 0.545 g precipitate, what is the molarity of lead(II) ion in the original solution?

27. ## educating young children PART1

a portfolio should? (a)consist of items that don't directly relate to the school curriculum\(b)be put together only during the last week of school in order to highlight the students best work (c)allow the educator to determine growth in the students

28. ## english

could any one please explain the grammatical term : ERGATIVE verb

29. ## ECONOMICS

suppose that the short run costs for a paintbrush manufacturer are given by the expression: TC= 100+2Q+.01 Q2 A. WAT ARE THE FIXED COSTS OF THIS MANUFACTURE? B. WHAT ARE THE TOTAL COSTS , AVERAGE COST, AVERAGE VARIABLE COST AND MARGINAL COST AT 50 AND 100

30. ## Social Studies

I am an investor in the Virginia Company. What is a reason of why people should leave England and move to Jamestown. What are the two advantages of living in Virginia? Thank you.

31. ## math

You are an executive with the Varsity Corporation in Atlanta, Georgia. The company president was schedule to make an important sale presentation tomorrow afternoon in Seattle, Washington, but has now asked you to take his place. The trip consist of a 2

32. ## social studies

i need to find out stuff about resources and people.can anyone give me a good website?

33. ## educating young children PART1

which of the follwing is not a drawback associated with anecdotal notes? (a)significant events can happen to children on days when youre not writing about them (b)theres a tendency to write about interesting events as opposed to developmentally-significant

38. ## math

75 centimeters is how many inches

39. ## stats help

find the number of road fatalies attributed to impaired drivivng in ontario for the years 1975, 1985, 1995. i couldn't find the answer for it, it was n't on google. if you can find asite that has this, that would be a big help. thank you soo much for your

40. ## educating young children PART1

which one of the following statements concerning discipline is true? (a)discipline is guidance (b)one of the purposes of dicipline is to help children develop inner controls for behavior (c)young children instinctively know when they're misbehaving (d)if

41. ## Math

Like fractional notation, __________ notation is used to denote a part of a whole.

42. ## Spanish

Could you please check these-I get stuck on reflexive verbs.We had to make up questions and answers. 1. ¿Qué haces tú en la escuela? Yo estudio en la escuela. 2.¿A qué hora te acuestas por la noche? Me acuesto a las once de la noche. 3.¿Cuándo te

43. ## English

Why do u think crispin left the cross on Aycliffe even though he he was dead? name of book: crispin the cross of lead

44. ## Math

For 31 hours of work you are paid $361.15. How much would you receive for 33 hours of work? (a)$ 372.80 (b) $384.45 (c)$ 42.65 (d) $11.65 (e)$ 384.54

45. ## Physics

A dog is running at 9.1 m/s for 7.8 km. How long did it take him to arrive at his destination? (Give answer in seconds)

46. ## Vocabulary/social studies

Whats the latin base in the woed aggrandize?

47. ## educating young children PART1

which of the following is true regarding group activities? (a)its not necessary for each child to participate (b)a role should be planned for each child in the activity (c)activities should focus on a specific developmental level (d)activities should

48. ## chemistry

If 0.694 grams of pure KHP are needed to exactly neutralize 30.5 mL of a calcium hydroxide solution, what is the concentration (in molarity) of the base solution?

49. ## chemistry

Based on how the indicator phenolphthalein worked in Lab III, explain why the golden rod paper turned color when sprayed with Windex (a base) and changed back to the golden rod color when treated with vinegar (an acid) in the demonstration in class.

50. ## statistics

37% of all doctors are family practitioners. If four doctors are picked at random, what is the probability that all four are family practitioners? a.1.48 b.0.0187 c. 0.0168 d. .1369

51. ## statistics

If a card is drawn at random from a deck of 52, what is the probability that it is an ace or a heart?

52. ## statistics

An office has 8 secretaries and 5 computer operators. If one employee is picked at random, find the probability that it will be a secretary.

53. ## statistics

Lubbock, Texas ran a survey and determined that 27% of all households subscribed to the daily paper, 32% watched the evening news, and 9% did both. If a household is chosen at random, what is the probability that the evening paper was received or the news

54. ## Animal Physiology-Membrane Potential

Intracellular Extracellular Na+ 12 mM 160 mM Cl- 7 mM 110 mM K+ 140 mM 5 mM 1.How do you calculate the equilibrium potential for potassium, K+, under these conditions? 2. Assuming that Na+ is the only ion the plasma membrane of this cell is permeable to,

55. ## ecom

Sometimes market activities (production, buying, and selling) have unintended positive or negative effects outside the market's scope. These are called externalities. As a policy maker concerned with correcting the effects of gases and particulates emitted

56. ## Physics 1

From the top of a cliff overlooking a lake, a person throws two stones. The two stones have identical initial speeds of v0 = 13.4 m/s and are thrown at an angle θ = 31.8°, one below the horizontal and one above the horizontal. What is the distance

57. ## help me rewrite this disorganised memo

from: to: date: subject: because independence eve falls on a friday the day has been designated a saturdayfor workpurposes.Factories will close all day with stores open a half day only.saturday october 9,has been designated a sundaay with both factories

58. ## history websites

Where can I find good websites to search on the Bodie Lighthouse?

59. ## math 3b

In a set of 400 values, the mean is 121 and the standard deviation is 14. Estimate how many values fall in betweeb each interval

60. ## memo

1).how can management make organizational communication simple for members of staff to understand? 2).Unclear organizational communication can make a complex procedure completely meaningless.Explain this statement in light of the above memo.

61. ## math

Tony has 4 quarters, 5 dimes, and 8 nickels in his pocket. He takes out 2 coins without looking. What is the probability that Tony picked a dime followed by a quarter?

62. ## math

In the beginning, there is 3000 fish in which for some causes every year 20% of d fish die and 1000 are added. So we need to use compound interest formula to find out the equation that we can just substitute d number of year and find out how many fish

63. ## Pre-calculus

can someone show how to graph step by step the polynomial function -x^4 - 4x^2. That is -x to the fourth power minus -4x squared. Please Help!!!

64. ## math algebra 1

x + 3 > 7 and 3 + 7 > x x > 4 and 10 > x 4 < x < 10 Replace the dimensions of the above figure with 12 ft and 18 ft and write the inequality for x.

65. ## calculus

A bicyclist is riding on a path modeled by the function f(x) = 0.03x, where x and f(x) are measured in miles. Find the rate of change of elevation when x = 3.

66. ## math

A deck of cards has 12 picture cards in it. 4 kings (K). 4 queens (Q). 4 jacks (J). (Part 1) How many different K-Q-J combinations can be made if the suits of the cards don't have to math? (Part 2) Name the multiplication rule you used to find your answer.

157. ## help

what is most important for us to walk upright

158. ## Variables and expression

Explain how you could show five less than a number using an expression

159. ## chemistry

How many moles of O are needed to combine with 0.223 mole of C to form the following compounds? CO CO2

181. ## Humanities

I need an introduction to the relationoship between culture and arts. The questions I need to answer are , What is culture, what is art, what is the role of the artist? I can answer the quwestion, I am just having a hard time starting an introduction.

182. ## physics

A basketball leaves a player's hands at a height of 2.20 m above the floor. The basket is 2.80 m above the floor. The player likes to shoot the ball at a 36 degree angle. If the shot is made from a horizontal distance of 9.00 m and must be accurate to -.22

183. ## physical education

what is physical education

184. ## science

The primary substance from which all other chemical compounds and substances are made is a____________. A) element B) compound C) mixture D) pure substance

185. ## psychology

. Billy Sue hated dresses but loved dogs, horses, turtles, lizards, and frogs. Her grandmother, who knew how little girls should look, dragged her to the children's store and forced her into a lacy pink dress. Although Billy Sue scowled at her image in the

186. ## college algebra

Annual profit in thousands of dollars is given by the function, P(x) = -.1x2 + 50x - 300, where x is the number of items sold, x ≥ 0. describe the meaning of the number -.1 in the formula, in terms of its meaning in relation to the profit. describe the

189. ## scientific notation

simplify write in scientific notation (9x10^-3)^2

190. ## physics

An airport has runways only 142 m long. Asmall plane must reach a ground speed of 45 m/s before it can become airborne. What average acceleration must the plane’s engines provide if it is to take off safely from its airport?Answer in units of m/s2.

191. ## scientific notation

simplify write in scientific notation (9x10^-3)^2

204. ## physics

When the Sun is directly overhead, a hawk dives toward the ground at a speed of 6.97 m/s. If the direction of his motion is at an angle of 34.1 below the horizontal, calculate the speed of his shadow along the ground. Answer in units of m/s

205. ## Materials

Give at least one example of an application of each branch: Motion -cellphone Properties of Materials Sound -Radios Light -Candle Electricity -Calculator Magnetism -VCR's Properties of atoms -Computers Nuclear physics -?

206. ## Chemistry

What is the molarity of 782 mL of a solution that contains 0.056 mol of solute? Answer in units of M

207. ## science

which of the following is the best way to minimize weathering and erosion? A. building suburbs B. grazing livestock C. setting fires D. replanting vegetation My answer is D am i right?

208. ## Composition 101 - Argosy U -

I am thinking about doing a paper regarding religion/vs./spiritual I want to make a point about How To Be Approached when someone ask me "Why am I a ......, surely it doesn't take all that." (Might even be my title (smile). Can you help me - or am I on the

209. ## social studies

how did rivres in southwest asia enrich the soil

210. ## social studies

how has the physical characteristics of ny state affected the way people live?

211. ## Math

The perimeter of a pool table is 30 ft. The table is twice as long as it is wide. What is the length of the pool table?

213. ## math

explain what y-incerpet is in a simplier form?

214. ## spanish

The video characters are having Maite's birthday cake. Complete the conversation with the correct pronouns. DON FRANCISCO: Chicos, voy a hablar con la señora Perales, en un momento estoy con_____. JAVIER: Sí, don Efe, no se preocupe por ______ . INÉS:

215. ## physics

do you know where I can get a formula sheet for physics our book does not include a break down of them

216. ## spanish

The video characters are having Maite's birthday cake. Complete the conversation with the correct pronouns. DON FRANCISCO: Chicos, voy a hablar con la señora Perales, en un momento estoy con_____. JAVIER: Sí, don Efe, no se preocupe por ______ . INÉS:

217. ## Algebra

Use an equation to solve the problem. John and two friends rent a canoe at a park. Each person must rent a life jacket. If the bill for the rental of the canoe and life jackets is 41, for how many hours did they rent the canoe?

218. ## Calculus

Please help? Let F(a) be the area between the x-axis and the graph of y=x^2cos(x/4) between x=0 and x=a, for a>0 (consider the area to be negative if the graph lies below the axis). Find the formula for F(a).

219. ## Chemistry

How many milliliters of 5.2 M HCl must be transfered from a reagent bottle to provide 22 g HCl for a reaction? Answer in units of mL

220. ## Math

Melvin estimate 645 + 322 by adding 600 + 300. Is his estimate sum an over or under estimate please? Ty

276. ## math

Mona drives 40 miles per hour. how long will it take Mona to drive 100 miles

277. ## Math/Science(Short Question 10th grade))

[History Homework] Please answer 1. What are 2 pieces of technology essential today? 2. If you could give a prehistoric person one item from today what would it be? 3. Why is writing important for civilizations? 4. Why is theater/drama important to

278. ## Algebra

write a rule for the function of input(x) is 0,4,8,12 and output(y) is 5,7,9,11

279. ## Chemistry

When you mix sodium bicarbonate and calcium chloride with bromothymol (and indicator that changes color when a chemical reaction occures) what does it create?

280. ## calculus

Maximize p = x + y subject to x + 3y =0

281. ## Math

Mr. Smith bought shoes for $120 and a suit for$ 340. Find the total cost including tax if the tax rate is 5.5%. (a)$485.30 (b)$48.53 (c)$358.70 (d)$460 (e)\$406

282. ## algebra

Mike drove 80 miles per hour. How long will it take Mona to drive 100 miles.

283. ## science

What is acceleration?

284. ## Math

5x+3y=-11, 7x-2y=19 solve by elimination. Sol'n: 5x+3y = -11 ---(1)x 2, 10x + 6y = -22 ----(1') 7x-2y = 19 ---(2)x 3, 21x - 6y = 57 ----(2') add 1' and 2' 31x = 55, divide by 31 on both side to obtain the value of x, x = 35/31 then find y: from (2)

285. ## calculus

What is wron with the following proof limx->3 2x=6? Suppose that Epison=1 and delta=1/2. Then if absolute value x-3

286. ## CIS

1.) Encrypt the hexadecimal message F9E8 using the Rail Fence cipher for binary numbers with 3 Rails. [Give answer in hexadecimal encrypted message] 2.) Decrypt the hexadecimal encrypted message CDEF created by the Rail Fence cipher for binary numbers with