# Questions Asked onFebruary 23, 2012

3. ## Geometr

Determin the distance b/w a(4,3)and(8,12)b(2,1)and(2,-9)c(-1,-5)ana(2,-3)

4. ## Geometr

Determin the distance b/w a(4,3)and(8,12)b(2,1)and(2,-9)c(-1,-5)ana(2,-3)

5. ## geometry

Find the lateral area of a right triangular prism with an equilateralbase length of 5cm and height of 10cm.

6. ## geometry

The base of a pyramid is a square. The perimeter of the base is 20ft, and the surface area of the pyramid is 65ft^2. Find the slant height of the pyramid.

7. ## geometry

Find the ratio of surface area to volume for a cube with a volume of 64 in^3.

8. ## Recheck-Essay

By studying in the USA, I believe that I am not only getting an internationally recognized education, but also a thrifty one. My decision to study here will help me become independent. In addition, the money I save by studying here will eventually help me

9. ## Physics

A 0.168kg hockey puck slides at 11.4m/s. what is the work needed to stop the puck?

10. ## physics

A 50 gram ball enters a a pendulum with mass 200 g. The pair then swings up to a height of 10 cm. Find the velocity at which the pair move immediately after the collision. Your answer is incorrect. 1.4 m/s Find the initial velocity of the ball before the

11. ## physics

A spring S of force constant k=100 N/m. is fixed to the base of a 30 degree incline.A mass m=50g. is held against the free end of the spring,so that the spring is compressed by 0.1 metre.If the mass is now released,calculate the distance travelled by the

asked by anil jha

32. ## physics

A passenger in a helicopter traveling upwards at 20 m/s accidentally drops a package out the window. If it takes 15 seconds to reach the ground, how high to the nearest meter was the helicopter when the package was dropped?

33. ## american goverment

One function that both the House and Senate share is to? . Somebody can tell me where can I found this?? Thanks

34. ## Maths

Karen took 1hour 45mins to drive from Town A to Town B. She took another 25 mins drive from Town B to Town C. After that, she drove back to Town A. The journey from Town A to Town C and then back to Town A took 3h and 3mins. Find the percentage of time she

35. ## physics

A passenger in a helicopter traveling upwards at 20 m/s accidentally drops a package out the window. If it takes 15 seconds to reach the ground, how high to the nearest meter was the helicopter when the package was dropped?

36. ## Psychology

Sally is driving her car and talking on her cell phone. Statistically this behavior has been shown to be quite dangerous and contributes to many automobile accidents. In performing these two tasks simultaneously, Sally uses: a. conscious cognitive

37. ## psychology

Henry is an avid animal lover. He always takes in strays and donates his local animal shelter. One night he goes to an Atlanta Braves baseball game where hundreds of people are walking past the hotdog vendors. Henry sees a young, pregnant homeless,

38. ## american goverment

The system of checks and balances allows the Supreme Court to A. veto legislation passed in Congress. B. nominate candidates for congressional seats. C. declare acts of the president unconstitutional. D. select judges to serve in the federal court system.

39. ## psychology

A worker who recently switched from day to swing shift has become less efficient and more irritable. He is also making more mistakes than he did on the day shift. The cause of this worker's problem is likely to be: a. sleep disorders due to change in shift

40. ## psychology

Activation-synthesis dream theory purports that dreams rersult from the brain's effort to make sense of: a. the day's activities and experiences b. problems the person has not yet tresolved c. our external world d. spontaneously firing neurons during REM

41. ## math

I need help solve the equation by fractions 8/(21-y) = 12/(y+19) I think the answer is y = 5, i just need to know how to do work out. i done some solution like this first multiply by(21-y)(y+19)(assuming that y = 21 and y = 19: (21-y)(y+19)8/(21-y) =

42. ## maths

the radius of a circle is 8cm and the length of one of its chords is 12cm. find the distance of the chord from the centre

45. ## trig

sin(x) = 8/17 and 90 degrees < x < 180 degrees then find cos2(x)

46. ## life orientation

substance abuse of both legal and illegal drugs among the youth

47. ## chemistry

What mass of potassium nitrate would you have to heat in order to produce 1.00dm of oxygen at rtp?

48. ## Chemistry

When 3.2 moles of Al react with excess HNO3 at STP, How many liters of H2 are formed

49. ## English Lit-Check please-thank you

We're reading "The World is Too Much with Us by Wordsworth. We have some questions to interpret-I understand about Wordsworth and his relationship and philosophy concerning nature but I'm just not sure after further research the answer to these two

asked by Thomas S.
50. ## Geology

I don't really understand this queston...Why Al ore producing and Al metal producing countries are often not the same?... thanks..

51. ## Maths

Dear Genius, Good day! The number of apples in a basket is between 60 and 120. If i put these apples into bags of 5, there will be a remainder of 1 apple. If i put these apples into bags of 8, there will be a remainder of 6 apples. Find the total number of

When only the front wheels of an automobile are on a platform scale, the scale balances at 7.8 kN; when only the rear wheels are on the scale, it balances at 5.5 kN. What is the weight of the automobile? How far is its center of mass behind the front axle?

53. ## Maths

The Sentosa High School's telephone number is an eight digit number. The sum of the two numbers formed from the first three digits and the last five digits respectively 66558. The sum of two numbers formed from the first five digits and the last three

54. ## English Comp

I need help on how to write a compare and contrast essay on the topic of pre-school

55. ## physics

An object that has kinetic energy must have which of the following?A) momentumB)acceleration c all of these d none of these

56. ## Calculus

find f'(x) if f(x)=x^2e^(x(3x-1)^3

57. ## Calculus

find f'(x) if f(x)= (cosx)^sinx

77. ## Algebra

A club with 35 members is to select five officers (president, vice president, secretary, treasurer, and historian). In how many ways can this be done?

78. ## chemistry

3. Answer the following questions: For each question show a balanced chemical equation and show all calculation for full credit. a. Assume that you had 100 nuts (N) and 75 bolts (B). How many NB molecules could you make by screwing one nut onto each bolt?

79. ## statistics

A secretary can type 12 names per 60 secods in an average classroom how long will it take her to type all the names

80. ## statistics

Microfracture knee surgery has a 75% chance of success on patients with degenerative knees. The surgery is performed on 5 patients. Find the probability of the surgery being successful on 3 or 4 patients?

81. ## algebra

6) Write with positive exponents: [ 3-3 a-2 b5 c-3 d-4]

82. ## algebra

6) Write with positive exponents: [ 3-3 a-2 b5 c-3 d-4]

83. ## Chemistry

Ag+2 is generated in a lab. This is an unusual oxidation state for AG. Write the ground state electronic configuration of Ag+2 using the noble gas shortcut.

84. ## Chemistry

There is a large [Cr2O7]-2 absorbance observed at 360 nm. Why can this wavelength not be used instead of the smaller absorbance at 440 nm?

85. ## Western Civilization

How did the intellectual theories of Charles Darwin, Karl Marx, Sigmund Freud and others signal a revolution in modern thought?

86. ## chemistry

One purpose of adding KIO4 is to prevent the permanganate ion from being slowly reduced to Mn+2 by H2O. Write a balanced redox equation for the reduction of permanganate ion to Mn+2 by water in acid solution.

87. ## Chemistry

If 30% of a sample of radioactive isotope decays in 24 hrs, what is the half-life? How do i know which order to use? and do I convert hr to mins or seconds? Pls help for my exam tomorrrow

88. ## Proof! Help!

If k vertices has kC2 edges, show that (k+1) vertices has (k+1) C 2 edges

89. ## math

I have 432 cards that are three and a half inches long if I put them end to end how many feet long is the line of cards

90. ## PHYSICS

A 25,000 kilogram train is traveling down a track at 20 meters per second. A cow wanders onto the tracks 75 meters ahead of the train, causing the conductor to slam on the brakes. The rain skids to a stop. If the brakes can provide 62,500 Newtons of

91. ## PHYSICS

Consider a spring and block system k= 18 N/m x initial = o m x final = 0.08m Useing Hooke's law to calculate the force needed to stretch this spring 8 cm.

92. ## Algebra: Help Please

For the given function, compute the missing values in the following table. f(x) = 8x i got the negatives wrong, but I know how to solve for it. Is there a reason it is wrong? -3: -1/512 -2: -1/64 -1: -1/8 (^These were wrong, but I don't know how to solve

93. ## calculus

Find an explicit expression for y' for the curve de fined by 3(x^2 + y^2)^2 = 100xy.

94. ## calculus

You operate a bakery. You buy cakes from a supplier who charges you $5 per cake. Government regulations dictate that you can only charge a price between$10 and $20 per cake. Your research shows that if you were to charge$x per cake, you would sell 125 -

95. ## calculus

How many horizontal tangent lines exit to the curve f(x) = x^cos(x)?

96. ## physics

What is the rotational speed of the minute hand on a clock? Convert from rad/s to rev/s

97. ## Math/Conics

Find the vertex and focus of the parabola with the following equation: y = x2 + 6x + 5

98. ## Math/Conics

Find the center, vertices, and foci of the ellipse with the following equation: x^2/9+y^2/16=1

99. ## math

Tania is in charge of designing a school pennant for spirit week. She wants the base to be 3 1/2 feet and the height to be 6 1/2 feet. She has 20 square feet of paper available. Does she have enough paper? Explain.

a block with a mass of 5.00 kg is moving at 8.00 m/s^-1 along a frictionless horizonal surface toward a spring with force constant k= 500 N/m^1 that is attached to a wall.find the maximum distance the spring is compressed. the spring has negligible mass.

101. ## early childhood

evolutionary psychology and behavior genetics: watson

A 2.00kg block is pushed against a spring with force constant k=400N(m^-1), compressing it 0.180m. The block is then released and moves along a frictionless horizontal surface and then up frictionless incline with slope angle 37.0degrees. a. What is the

103. ## chemistry

How much HCL would be needed to neutralize 250mL of 6 M NaOH (HCL = 1.5 M)?

A brick with a mass of 0.400kg is pressed against a vertical spring with force constant k=500 N(m^-1) such that the spring is compressed 0.200m. When the brick is released, how high does it rise from this position? (the brick and the spring are not

105. ## Physics help please!!!

Biomedical measurements show that the arms and hands together typically make up 13.0% of a person's mass, while the legs and feet together account for 37.0% . For a rough (but reasonable) calculation, we can model the arms and legs as thin uniform bars

178. ## math

people flock to andys lemonade stand because each cup of lemonade is only 35 cents. sometimes customers buy several cups of lemonade.Andy and his helpers have to figure out how much to charge each time someone buys more than 1 cup of lemonade. what could

179. ## geometry

if a painting has a perimeter of 36 in, and the length of the picture is 8 inches. then what is the width?

180. ## math

If there is an square 8 by 8, how many 4 sq ft tiles would i need?

181. ## Math

can x squared - 1 be factored?

182. ## math

-12d - 9= 15d+9

183. ## to Ms.Sue

Thank you so much. I bet when I'm in college I will still need your help!

184. ## English

Correct this: The virus may cause AIDS, cancer, or even kill. Do I need to add a word in front of cancer? Would this be correct? The virus may cause AIDS, produce cancer, or even kill.

185. ## PHYSICS

A 25,000 kilogram train is traveling down a track at 20 meters per second. A cow wanders onto the tracks 75 meters ahead of the train, causing the conductor to slam on the brakes. The rain skids to a stop. If the brakes can provide 62,500 Newtons of

186. ## PHYSICS

A 7 kilogram bowling ball is dropped from a fourth story window. If each story is 3 meters high, use energy conservation (not the equations of motion) to find the ball's velocity when it strikes the ground. Ignore air resistance. Thank you

187. ## math

write a problem you could represent with 3n-7=14.

188. ## PHYSICS

a 1500kg sports car accelerates from 0 to 30 m/s in 8 seconds. Whaat is the power of its engine?

189. ## Easy 4th Grade Math

What are things that have symmetry in a house?

190. ## calculus

I'm trying to find the intersection point of y=x-2 and y=sqrt(x). I tried letting both equations equal each other but kept coming up with the points (4,1) and (1,4) however these aren't right as the answer should be (4,2) but I am unable to get this

191. ## English

This sentence contains a dangling modifier. As a Principal Technical Editor/Writer for Alpha Communications, with over 12 years of experience, the internship would provide an opportunity to work with technical documents outside my familiar "comfort zone"

192. ## AJ

How do the three susytems law enforcemnt, cout, and corrections interact with each other?

193. ## math

(4m-20)(7m)/(5m-25)(28)

194. ## AP CHEMISTRY

Write the formula for each of the following compounds, being sure to use brackets to indicate the coordination sphere. A) bis(bipyridyl)cadmium(II) chloride B) potassium tetrabromo(ortho-phenanthroline)- cobaltate(III)

195. ## ChemHelp

Chem Help! Limiting and excess reagent? Identify the limiting and excess reagent for each of the following scenarios involving the formation of silicone dioxide, SiO2. Please explain!!! Thank you! Si + O2 --> SiO2 a. 2 atoms of silicone and 2 molecules of

196. ## ALGEBRA

I went to the car show this weekend and that is what I saw: Every red car was a sport car, but I found it odd that half of all the blue were sports cars. A salesman told me that half of all the sports car were red. I counted 40 blue cars and 30 red cars.

asked by el chave del ocho
197. ## physics

At 1:00 p.m. a car, traveling at a constant velocity of 86 km/h toward the west, is 22 km to the west of our school. How far from the school will it be at 3:30 p.m.? Answer in units of k

198. ## Science

A blue-eyed man, both of whose parents were brown-eyed, marries a brown-eyed woman whose father was blue-eyed and whose mother was brown-eyed. This man and woman have a blue-eyed child. What are the genotypes of all these individuals?

199. ## chem

Consider the reaction 4KO2(s) + 2CO2(g) ! 2K2CO3(s) + 3O2(g) . How much KO2 is needed to react with 75.0 L of carbon dioxide at STP?

200. ## GeOmEtRy!!!

what are the solutions to the following equation 3x^2+5=80?

201. ## Math

factor x squared - x - 12

202. ## Physics

A planet has two satellite moons. Moon X has an orbital period of 2.13 days. Moon Y has an orbital period of about 3.53 days. Both moons have nearly circular orbits. Use Kepler's third law to find the distance of each satellite from the planet's center.

203. ## algerbra

the length of a rectangle is one foot more than twice its width. If all sides were increased by 7feet the perimeter of the new triangle would be 122 ft. find the new dimensions of the new rectangle

204. ## GeOmEtRy!!!

a triangle has an area of 35 square inches. The base of the triangle is 4 inches less than twice the height. What is the length of the base of the triangle?

205. ## Geometery

2. Use only a compass and a straightedge to construct each of the following, if possible: a. A segment congruent to and an angle congruent to ÚACB CB

206. ## chemistry

in the equation mg+2hcl-->mgcl2+h2, what mass of the hcl is consumed by the reaction of 2.50 mol of magnesium

207. ## math

You want to determine the height of your school. The building casts a 6 foot shadow at the same time you cast a 15 inch shadow. If you are 5 feet tall how tall is the building?

208. ## Physics

The potetial energy of a spring is 0.25 J when it is compressed 0.05m to the left of the equilibrium position. At this point it comes to its leftmost position. What is its kinetic energy when it returns to its equilibrium point? a. zero b. 0.25 J and the

209. ## physics

The distance between two successive crests of a certain transverse wave is 1.05 m. Eight crests pass a given point along the direction of travel every 17.9 s.

210. ## calculus

When region R is revolved about the line y=c, the resultant solid has a volume of 720*3.14. Find all possible values of c.

211. ## Math

The measure of two complementary angles are in the ratio 7:11. What is the measure of the smaller angle?

212. ## geometry

the base of an isoscels triangle is 4x long. the altitude to the base is 3x cm long. Find the length of one other side of the triangle

213. ## GeOmEtRy!!!

Which of the following expressions is equivalent to (4a^2b)^3(ab)^3? a. 64a^9b^6 b. 12a^7b^6 c. 64a^7b^9 d. 16a^6b^6

214. ## geometry

find the altitude of an equilateral triangle with side length twelve

215. ## Math

Whatis the surface area of the right square pyramid in square meters? Dimensions: Base/length: 6 meters Slant height: 5 meters I know the formula is S.A.=1/2P "l"+B. I don't know what P or B is.....

216. ## math

a box will hold seven 3-pound bags of pears. how many boxes will be needed for 90 pounds of pears?

217. ## CHEMISTRY

Give the NAMES and FORMULAS for the following COVALENT (nonmetallic) compounds. 1. Sulfur hexafluoride 2. Tetraphosphorus heptasulfide 3. Silicon tetrachloride 4.Disulfur decafluroine moniodide 5. Iodine pentafluoride 6. Tetranitrogen trisulfide 7.

218. ## physics

A 59.0-kg runner has a speed of 3.20 m/s at one instant during a long-distance event. (a) What is the runner's kinetic energy at this instant? KEi = J (b) If he doubles his speed to reach the finish line, by what factor does his kinetic energy change? KEf

219. ## MATH

The measure of two complementary angles are in the ratio 7:11. What is the measure of the smaller angle? Would the correct answer be 35?

220. ## MATH word problem

I have to answer the follwoing question: Jades mother was making curtains for the dining room. She use 37 3/4 yards of fabric for the curtain panels. 13 2/7 yards of fabric for the valance. and 6ft 2in. of cord for the tiebacks. HOW many yards of fabric

221. ## Calculus

Foggy optics, inc. makes laboratory microscopes. setting up each production run costs $2500. Insurance costs, based on the average number of microscopes in the warehouse, amount to$20 per microscope per year. storage costs, based on the maximum number of

222. ## CHEMISTRY

Can someone tell me if I am getting these correct? Give formula for the following covalent compounds: 1. Sulfur hexafluoride-SF6 2. Tetraphosphorus heptasulfide-P4S7 3. Silicon tetrachloride-SiCl4 4.Disulfur decafluroine moniodide-S2F10I 5. Iodine

223. ## CHEMISTRY

Can someone tell me if I am getting these correct? Give formula for the following covalent compounds: 1. Sulfur hexafluoride-SF6 2. Tetraphosphorus heptasulfide-P4S7 3. Silicon tetrachloride-SiCl4 4.Disulfur decafluroine moniodide-S2F10I 5. Iodine

224. ## English ms. sue

ms. sue u please able to delete my other post where i talk about animoto site today i present it to class actually everyone really like i not want them searching up and come here.

225. ## geography

1. What is the capital of the Scandinavian nation whose eastern border is the Soviet Union? Helsinki, Finland 2. Which will have dawn first, eastern North America or eastern South America? Eastern South America 3. What is the capital of Idaho? Is it east

226. ## GeOmEtRy!!!

How many x-intercepts does the graph of y=x^2-4x+4?

227. ## Calculus

Evaluate this limit, if it exists: lim (7-x)squared - 9 / 4-x x->4

228. ## CHEMISTRY

Give names of the following covalent (nonmetallic) compounds: S4N2 ClF3 I2O5 SeF6 PBr5 H2O C2I6 C5F9H2Cl Si2F6 Si9F10Br7H *The longer ones are the ones I need help on. The shorter ones such as the first one are ones I have completed and would like to make

229. ## Chemistry

[OH] = 1.5 x 10^-13 , what is the [H3O] ? This is what I did. 1.0 x 10^-14 M / 1.5 x 10^-13 M = 1/15 or.066666 So what is the correct answer? Thank You

230. ## GeOmEtRy!!!

The area of a rectangle is (6x^2)^2y^3 and the width is 9xy^2. What is the length of the rectangle?

231. ## math question

I have to answer the follwoing question: Jades mother was making curtains for the dining room. She use 37 3/4 yards of fabric for the curtain panels. 13 2/7 yards of fabric for the valance. and 6ft 2in. of cord for the tiebacks. HOW many yards of fabric

232. ## english

is this sentence correct What did the philosopher Aristotle mean when he said "To perceive is to suffer"?

233. ## Physics

Assume that the three blocks in Figure P4.27 move on a frictionless surface and that a F = 46 N force acts as shown on the m = 2.5 kg block. Figure P4.27. (a) Determine the acceleration given this system. m/s2 (to the right) (b) Determine the tension in

234. ## social studies

Why did Egypt want to control Nubia?

235. ## English

I need some help finding statistics and pics about how much money people save by using the online community. Help please !

236. ## Math

Marquis called several pizza places and was told the following prices for a large pizza: $10,$11,$8,$17,and \$9. What are the mean and the median prices? Is one more useful than the other for describing the typical price? Explain. P.S. For the mean I got 11

237. ## Pre- Calculus

Evaluate the trig function tan33degress

238. ## college/ pre-cal

a square fence 9 feet high enclosing a radio tower is 3 feet from the tower on all 4 sides. guy wires used to hold the tower in position are attached to the tower 30 feet above the ground and 13 feet from the fence on all 4 sides. How long are the guy

239. ## 5th grade math

holly's garden is divided into 5 equal sections. she will fence the garden into 3 areas by grouping some equal sections together. what part of the garden could each fenced area be?

240. ## CHEMISTRY

ive names of the following covalent (nonmetallic) compounds: S4N2 ClF3 I2O5 SeF6 PBr5 H2O C2I6 C5F9H2Cl Si2F6 Si9F10Br7H *The longer ones are the ones I need help on. The shorter ones such as the first one are ones I have completed and would like to make

241. ## chem

Formulas for the covalent compounds: Diphosphorous monoxide Tetrasulfur hexaiodide

242. ## biology

Is Protein a short term energy source or a long term energy source? please explain

243. ## biology

Is Starch a long-term energy source or short-term energy source? please explain!

244. ## Algebra 2

My question involves "Graphic Representation of Radicals of the Second Order" I know that the length of the hypotneuse of a right triangle equals the square root of the sum of the lengths of the two legs. The problems I'm having trouble with are the square

245. ## Calculus

If x=2sec (theta), express tan(theta) in terms of x.

246. ## Calculus

Evaluate the integral from [(2/square rt 2),0] of dx/sqaure root of (4-x^2)

247. ## Calculus

integrate: (square root of (y^2 -121))/y dy, y>11. I got (12(square root of (y^2-121))/12 -sec^-1 (y/12) +C but it's not right. I'm not sure where I am going wrong.

248. ## Calc

Integrate from [0, 1/2]: 1/(4x^2+1)^(3/2) dx

249. ## physics

The Ferris Wheel in the figure below is a vertical, circular amusement ride with radius 10 m. Riders sit on seats that swivel to remain horizontal. The Ferris Wheel rotates at a constant rate, going around once in 11 s. Consider a rider whose mass is 59

250. ## Social studies

How did religon affect social order in Sumer?

251. ## Calculus

Integrate 1/(square root of (x^2 +2x +37))

252. ## 7th grade science

definition of cell cycle

253. ## MATH

Andrea made a car trip of 440 Kilometers. She averaged 54 Kilometers per hour for the frst part of the trip and 80 kilometers per hour for the secound part. If the total trip took 6 hours, how long was she traveling at 80 kilometers per hour?

254. ## social studies

How did early writing deveolp into the modern alphabet?

255. ## ASHFORD

Identify two distinct fallacies you see committed in the media.

256. ## Math

A school principal randomly choose 75 students for a survey on the cafeteria food. Determine whether the sample may be biased. Explain.

257. ## Precalculus

Solve Cos^2(x)+cos(x)=cos(2x). Give exact answers within the interval [0,2π) Ive got the equation down to -cos^2(x)+cos(x)+1=0 or and it can be simplified too sin^2(x)+cos(x)=0 If you could tell me where to go from either of these two, it would be great

258. ## social studies

How was Mesopotamia first united into one empire?

259. ## Chemistry

A particular reaction has an activation energy of 51.6 kJ/mol-rxn. How much faster is the reaction at 50 oC versus 25 oC? a. 2 times b. 5 times c. 3 times d. half as fast d. 20% as fast I think it would be A??

260. ## English

How do I cite a picture that is in an article for my work cited page???

261. ## Math

A playground has the shape of a parallelogram. If the base is 30 feet, and tyrese corresponding height ishhhh 25 feet, what is its area?

262. ## social studies

Whta area did the Pharaohs of Kush rule?

263. ## Mrs.Sue Math pls check :)

I have to answer the follwoing question: Jades mother was making curtains for the dining room. She use 37 3/4 yards of fabric for the curtain panels. 13 2/7 yards of fabric for the valance. and 6ft 2in. of cord for the tiebacks. HOW many yards of fabric

264. ## chemistry

What volume of a 4.50% v/v solution of ethanol in water can be prepared with 23.9 mL of ethanol

Formulas for the covalent compounds: Diphosphorous monoxide Tetrasulfur hexaiodide

266. ## CHEMISTRY

Give names of the following covalent (nonmetallic) compounds: S4N2 ClF3 I2O5 SeF6 PBr5 H2O C2I6 C5F9H2Cl Si2F6 Si9F10Br7H

267. ## life orientation

what according to the basic conditions of employment act applies with regard to the contraventions ?

268. ## any tutor

Are there any tutors on right now or people who are good with chemisty?

269. ## Psychology

How does self-concept affect perception?

270. ## 7th grade social studies

what was the Texas-Santa Fe expedition, and what were the results? Please explain, help, and thank you very much.

271. ## life orientation

what according to the basic conditions of employment act applies with regard to the contraventions ?

272. ## 8th grade math

how would i graph this inequality? 14x-23

273. ## physics

When jumping straight down, you can be seriously injured if you land stiff-legged. One way to avoid injury is to bend your knees upon landing to reduce the force of the impact. A 79.1 kg man just before contact with the ground has a speed of 6.27 m/s. In a

274. ## Statistic

The television network you addressed in Week 4 is asking you to compare the moods of groups that watch different types of shows. You can choose what they mean by moods. You may compare them on general mood, happiness, depression, frustration, or anything

275. ## Chemistry

How do I balance these equations? KOH + NHO3 → H20 + KOH HCl + NaOH → H20 + HCl Don't have to give me the answer, just tell me how. Please, thanks.

276. ## Math

'one angle is 4 times as large as another angle of the same triangle. the third angle o the triangle has a measure of 60 degress.' what are the measures of the other two angles in the triangle.

277. ## geology

discuss the nomenclature and geometry of sand bodies

278. ## statistics

a recent study by a large retailer designed to determine whether there was a relationship between the importance a store manager placed on advertising and the size of the store revealed the following sample information: observed

279. ## physics

Two dogs are fighting over a stuffed animal. One pulls to the right with a force of 88 N at 18° above the horizontal. The other pulls down and to the left with a force of 74 N at 12° below the horizontal. Ignoring the weight of the toy, if the total work

280. ## Algebra; HELP

Solve the equation. 3x^2+18x+24=0 Explanation, too please!

281. ## Finite

One coin is fair and one is weighted so that Pr[H] = [ 1/4]. You randomly select one of the two coins, and flip it 3 times, noting the result of each flip. What is the expected number of heads?

282. ## Physics to bobpursley or any1 else who knows this

A planet has two satellite moons. Moon X has an orbital period of 2.13 days. Moon Y has an orbital period of about 3.53 days. Both moons have nearly circular orbits. Use Kepler's third law to find the distance of each satellite from the planet's center.

283. ## Chemistry/Calorimetry

You buy coffee (200.0 ml) served in a styrofoam cup. You are up late working in a chemistry lab, and want to drink the coffee right away, but at 95.0 degrees C, it is too hot to drink. You like the temperature of your coffee to be 79.0 ± 1.0 degrees C.

284. ## physics

A block of mass m = 4.30 kg is released from rest from point circle a and slides on the frictionless track shown in the figure below. (Assume ha = 5.20 m.) B=3.20 c=2.00 (a) Determine the block's speed at points circle b and circle c. point circle b Y

285. ## elementary stats

the participants in a television quiz show are picked from a large pool of applicants with approximately equal number of men and women.Among the last 11 participant there have been only 2 women.If participants are picked randomly,what is the probability of

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286. ## statistics

Suppose IQ scores have a bell-shaped distribution with a mean of 100 and a standard deviation of 15. What percentage of the scores are above 130?

287. ## elementary stats

On a multiple choice test with 11 questions, each question has four possible answers, one of which is correct. For students who guess at all answers, find the mean for the number of correct answers.

asked by Rose Bud
288. ## physics

Taking R = 1.00 k Ω and ∑ 250 V in Figure P28.25, determine the direction and magnitude of the current in the horizontal wire between a and e. google this to find picture

289. ## bisness studies

Three specific example of civil society organisation

290. ## physics

A 90 cm length of steel wire with a diameter of 0.5 mm is stretched between the inside walls of an oven the wire is just taut with no tension when the temperature in the oven is 250 °C. What is the the tension force in the wire when the oven cools to a

291. ## chemistry

How many molecules in 8.221g PbO2?

292. ## ALGEBRA

Find the choice below which gives a first step in solving the given system of equations by the addition method 6x - 5y = 12 x + y = 3

293. ## calculus

integral of x*sqrt(2*x-1)

294. ## Physics

A mass and spring are arranged on a horizontal, frictionless table as shown in the figure below. The spring constant is k = 480 N/m, and the mass is 4.8 kg. The block is pushed against the spring so that the spring is compressed an amount 0.31 m, and then

295. ## physics

Two men pushing a stalled car generate a net force of +698 N for 7.37 s. What is the final momentum of the car?

296. ## algebra

Solve using the substitution method 6x-3y=18, 6x+3y=-12