Questions Asked onSeptember 22, 2011

1. Spanish

doy a la profesora los libros de español. Amelia pregunta a nosotras si queremos ir al cine. El empleado busca trabajo a sus primas en el almacén. Julio quiere traer un televisor nuevo a sus padres. Los clientes dicen a nosotros que todo está muy caro.

2. Algebra

A runner wants to run 11.6 km. She knows that her running pace is 8.1 miles per hour. How many minutes must she run?

3. chemistry

A mixture of carbon and sulphur has a mass of 9.0 g. Complete combustion with excess oxygen gives 22.6 g of a mixture of carbon dioxide and sulphur dioxide. Find the mass of sulphur in the original mixture

4. physics

a student drops a ball from a window 3.5m above the sidewalk. the ball accelerates at 9.80m/s^2. How fast is it moving when it hits the sidewalk.

5. math

Find f(3) and f'(3), assuming that the tangent line to y=f(x) at a=3 has the equation y=5x+2

6. Physics

If vector a has a magnitude of 29 units and points in the positive y direction. when vector b is added to a the resultant is 24 units in the negitive y direction, what is the magnitude of b?

7. Physics

An arrow is shot at a 30 degree angle with the horizontal. It has a velocity of 49m/s. The acceleration of gravity is 9.8 m/s2. How high will the arrow go?

8. math

What is the opposite of a professional eater? 12 spaces, letters- H O S M G C R I E B V W X A L N

9. physics

A bike accelerates from 0.0m/s to 4.0m/s in 4s. what distance does it travel?

10. chemistry

Cu+ S2- what name does that make an how do you solve it? is it CuS2 copper sulfide?

11. chemistry

Calculate the grams of substance required to prepare 250mL of 5%(wt/vol) NaNO3

asked by desperate for help
12. physics

A jet plane lands with a speed of 110 m/s and can decelerate uniformly at a maximum rate of 4.1 m/s2 as it comes to rest. Can this plane land at an airport where the runway is 0.80 km long? Answer this by calculating. Answer in units of km

13. Chemistry

What is the frequency of radiation that has a wavelength of 13 \mu m, about the size of a bacterium?

14. math

Yancy collects plastic banks. He has three different banks: a pig, a cow, and a horse. How many ways can Yancey arrange his banks on a shelf?

15. physics

Two cars are traveling along a straight line in the same direction, the lead car at 26 m/s and the other car at 40 m/s. At the moment the cars are 49 m apart, the lead driver applies the brakes, causing the car to have a deceleration of 1.5 m/s^2. How long

16. Math

a teacher asked her students to think of a number, multiply by 5, and subtract the product from 20 , then she asked them to multiply the resulting difference by the number they first thougt of a) use function notation to express the final answer in terms

17. Chemistry

Calculate Delte G Knot for H20(g) + 1/2 O2 H2O2(g) at 600. K, using the following data: H2(g) + O2(g) H2O2 (g) K = 2.3 X 10^6 at 600. K 2H2(g) + O2(g) 2H20(g) K= 1.8 X 10^37 at 600. K

18. geometry

Rafael wrote the statements shown in the chart. Statement 1 Description If a point lies outside a line, then exactly one plane contains both the line and the point. Statement 2 Description If two points lie in a plane, then the line joining them lies in

19. math,word problem(algebra)

The length of a piece of cloth is 8y m.Mr Lim cut 7 m from it to sew some cushion covers.Then,he cut 3y m to sew a curtain.The remaining material was cut into 4 equal pieces.How long was each piece in terms of y? please help me to complete this&thanks for

20. chemistry

Lithium iodide has a lattice energy of -7.3x10^2kj.mol and heat of hydration of -793kj.mol. Find the heat of solution for lithium iodide.

21. Math

Which of the following shows estimating 287 + 491 by using compatible numbers?

22. Physics

A car accelerates from 0 to 60 miles per hour in 6.5 seconds. Determine the distance traveled in this time and the acceleration. Assume constant acceleration.

23. Physics

An antelope has traveled 1.60 km at avg speed of 67.0 km/h. The antelope speed during the first half of the distance is 88km/h. Find the antelope's avg speed during the second half of the run.

24. math

The distance between the pivot point and the marking point of a compass when drawing a circle - my answer is the radius. Is this right?

25. Math

Miguel has 325 baseball cards and 272 football cards. He said that he has 597 cards in all. Is his answer reasonable? Explain using estimation.

26. math

an object is launched from ground level with an initial velocity of 400 feet per second. To the nearest tenth off a second, how long does it take the object to reach a height off 650 feet?

27. math

Find the dy/dt for each pair of functions y=x^2-5x , x=t^2+3

28. Physics

A car travels in a flat circle of radius R. At a certain instant the velocity of the car is 24 m/s west, and the total acceleration of the car is 2.5m/s^2 53 degrees north of west. Find the radial and tangential components of the acceleration of the car at

29. geometry

What is the perimeter of PQR with vertices P(–2, 9), Q(7, –3), and R(–2, –3) in the coordinate plane?

30. Physics

A tortoise can run at a speed of 20 cm/s and a hare can run exactly 20 times as fast. In a race, they both start at the same time but the hare stops to rest for 2.00 mins. The tortoise wins by 20.0 cm. How long does the race take? What is the length of the

31. Math

Sun-Yi estimated 270 + 146 and got 300. Is her estimate reasonable? Explain.

32. math

Use compatible numbers to estimate. 212 + 347 = 83 + 34 =

33. college physics

The person in the drawing is standing on crutches. Assume that the force exerted on each crutch by the ground is directed along the crutch, as the force vectors in the drawing indicate. If the coefficient of static friction between a crutch and the ground

34. statistics

Each of 25 adult women was asked to provide her own height (y), in inches, and the height of her father. The scatterplot below displays the results. Only 22 of the 25 pairs are distinguishable because some of the (x, y) pairs were the same. The equation of

35. English- poetry

Can anyone find any poetic devices in this poem? (metaphors, similes, personification, etc) AMBITION BY DES WALSH Once upon a time A poor man Named Marcus Sat all day Hoping for food Outside a kitchen door At night he would think Of the golden sands Where

36. Math

Use compatible numbers to estimate. 329 + 64 =

37. statistics

If the mean of a set of data is 21.00, and 6.00 has a z score of –1.50, then the standard deviation must be

38. calculus

A power station is on one side of a river that is 0.5 mile wide, and a factory is 5.00 miles downstream on the other side of the river. It costs $15 per foot to run overland power lines and$23 per foot to run underwater power lines. Estimate the value of

39. Geometry

Two supplementary angles are in the ratio 7:11. Find the measure of the smaller angle.

40. physics

A batted baseball leaves the bat at an angle of 35.0 degrees above the horizontal and is caught by an outfielder 370 ft. from home plate at the same height from which it left the bat.

41. Language

Complete the puzzle below with words that fit the meaning and end in the tch pattern. a)move with slight,quick jerks _ _ itch b)rough, quickly done drawings _ _ etch c)large, irregular spot or stain _ _ otch d)support or brace with a forked top_ _utch

42. Math

Natalie has 138 dvds and 419 cds. If you were to estimate the sum of the dvds and cds, what sentence could you write? Then find your estimated sum. My answer is 140 + 420 = 560 is this right..

43. algebra help bad!!!!

Solve 2x+9 greater or equal to 5 and 2x-13greater or equal to 9 what is the solution? I have x=-2 and x=2 how do I write this {x x> what?

44. Physics

A drag racer crosses the finish line of a 400.0-m track with a final speed of 104 m/s. (a) Assuming constant acceleration during the race, find the racer’s time and the minimum co efficient of static friction between the tires and the road. (b) If,

229. Math

Explain how you would use a number line to round 148 to the nearest ten.

230. math

for h(x)=5-4x, determine the input for x when the output of h(x) is -11 i have tried to answer this question so many times , but i cant figure it out

231. English

1. His ambition to become the world champion was understandable. 2. Our teacher, Henry Evans, complies this dictionary. 3. We heard the news that his team had won. 4. The idea of helping poor people in underdeveloped country was normal. 5. He had only one

232. Math 116A

Solve 3(3-8x)+5

233. introduction to psychology

survey results may be inaccurate due to:

234. Comp 156

What steps are included in the prewriting phase of essay writing? How does prewriting affect the success of an essay?

235. Pre-Calc

Determine whether the function is even, odd, or neither. f(x)= 7x^(3/4) How do you do this with a fraction?

236. Chemistry

I don't quite understand these questions.. Please help, thank you! 1. What happens Qualitatively on both the Macroscopic and Atomic Levels when Zinc, Iodine and Water are mixed? Does a Reaction occur? 2. If a Reaction does take place, are the Physical and

asked by John M.
237. critical thinking

how would a poet describe a snowstorm

238. Physics

The projectile motion is fired with velocity of magnitude vo at the angle feta. Find feta for which the maximum elevation of the projectile is twice its range

239. nursing

What is the nurse’s role in data collection, patient privacy, and ethical treatment of human subjects?

240. Math Help

According to statistics gathered as part of a research project by a group of statistics students on the college campus, 376 out of the 439 deaths attributed to lightning strikes were male. If all of the names of the deceased were placed into a drum and one

241. math

EXPLAIN how you picked the addends for the sum of 17

242. Biology

This is a choose the best answer question: The location of protein synthesis in eukaryotic cells is the a)nucleus. b)cytoplasm. c)plasma membrane. d)Golgi apparatus. d)vacuole. Ok so I know that the sites for protein sythesis are the ribosomes and there

243. chemistry

If the density of an element is 6 g/ml, how much space (in milliliters) should a sample of it displace if it has a mass of 2.4 grams?

244. Physics

The stored electrical energy of a 800-ƒÊ F capacitor charged to 1.20~104 Volts is converted to thermal energy by discharging the capacitor through a heating element submerged in 711.6 g of water in an insulating cup. What is the increase in temperature

245. nursing

How do mean, median, mode, and standard deviation differ from one another? Support your answers with specific examples

246. Pysics

Find the acceleration of the block of mass M = 5.26 kg in the figure below. (Take m = 4.06 kg.)

asked by Quan Jones
247. 7 th grade math

if all my grades are above an 80 how will a 38 affectn my grade.

asked by allie bartton
248. Civics

Why did the Great Britain raise taxes on the British colonists after 1763?

249. writing

coast in a sentence

250. Math 116a

Graph and write the interval notion? 9

251. biology

Lack of iron in the photic zone of the open ocean restricts the size of plankton populations. Iron is what kind of factor for marine plankton?

252. English

Could you please check these sentences, please? Thank you I've got short, wavy, dyed blond hair. I've got a round face, heavy eyebrows, oval eyes, a large mouth and a small nose. I'm friendly and sensitive. I'm quite serious and clever. I'ma bit shy but

253. Math

Natalie has 138 DVDs and 419 CDs. If you were to estimate the sum of the DVDs and CDs, what sentence could you write? Then find your estimated sum.

254. Mathematics

For example, let's say you had a beautiful clock that was always one minute late. It was too beautiful to throw away, so you decided to keep it. How slow/late would this clock be behind of all the other clocks in total for 1 year? 2 years? I got 365

255. pre calculus

solve in real number system x^3 + 5x^2 - 12x = 14 =0

256. Science

Please Help Thank you. If you had to argue the benefits of wind energy, what would they be? and What are the risks? can you please answer these question in 120 words or more Thank you.

257. chemistry

Calculate the volume of 0.05 kg of bromine. (D=3.12 g/ml)

258. chemistry

Calculate the volume of 0.05 kg of bromine. (D=3.12 g/ml)

259. math

I've saved \$9.00 to buy something.That is 1/6 the amount I need how do I figure out how much the coat costs?

260. geometry

U=(a,b,c,d,e,f,g,h,i,j,k) A=(a,c,d,f,g,i) B=(b,c,d,f,g) C=(a,b,f,i,j) Determine the following A'square B'

261. math

x/4+2=1 -3+x/1=-3 please show steps thanks

262. information technolgy

Hi I need help trying to create a code to encrypt and decrypt a message in netbeans.I know what to do but I cant get it to encrypte and decrypte.Can you please help me.

263. Math

Solve 3(3-8x)+5

264. Math 116

9/10th (3+8x)+3greater or equal to 15 what is the solution to this?

265. math help asap

what is the solution to 2x+9greater or less then 5 and 2x-13greater or equal to -9.

266. math

t = 4x+ t Help

267. Grammar

I'm not sure if this is a run-on sentence. Stock prices rose slightly yesterday. The TSE average up 16.9 points and the Canadian Exchange index up 3.2.

asked by Alex L.
268. science

What is the density of 57g and a volume of 6mL

269. CHEM

Calculate the pH of a .7 M solution of ammonium chloride

270. CHEM

Calculate the pH of a .7 M solution of ammonium chloride

271. math

4 children are taken off the chart. 2 children are removed from 4 - legged snake,and the others from duck-billed chicken. how many like duck-billed chicken?

272. science

Which 1 is an experiment? reading a blood pressure gauge, examining an x ray or taking prescription medicine? Thank you

273. English

1. Our teacher, Henry Evans, complies this dictionary. 2. Our teacher, Henry Evans complies this dictionary. 3. Our teacher Henry Evans complies this dictionary. (Are they all grammatical? Would you check the use of 'comma'?

274. Calculus

Can someone help me to evaluate these two integrals? INT dx/(x^2*sqrt(x^2-25)) and INT (from 0 to 1) -5*sqrt(x^2+1) dx

275. Math 116a

7X+4>-13 or 9x+4>-23 The solution of the compound inequality is ? I am totally lost!!!!!!!!

276. chemistry

at the sea side the sun shines equally on the sand and sea. assuming the both absorb the same amount of energy, why is the sand a lot hotter than the sea

277. Math 116 A

Solve 3(3-8x)+5

278. introduction to psychology

one of the controverises concering animal research involves:

279. Algebra II

I need to write a polynomial in SIMPLEST FORM having roots 2,-2 and 4. I have to gt rid of the parentheses by multiplying everything out.Did I do it correctly? (x-2)(x+2)(x-4)original problem 1.x^2 + 2x-2x=x^2-4) 2. (x^2-4)(x-4) 3. x^3-4x^2-4x+16=0

280. Math

Find the zeroes of the function algebraically. f(x)= ã-7x-2

the answer to this expression is -9-4√5 the expression is (2+√5)/(2-√5) i cant figure out how it got there

282. chemistry

1. Is there a way to put energy into Zinc Iodide in order to Regain the Elements, Zinc and Iodine? If there is a Way, How does it Happen? 2. What are the Identities of the substances found after electrolysis and heating? I don't understand these questions.

asked by John M.
283. Algebra 2

Using Equations The second angle of a triangle is three times the first and the third is 12 degrees less that twice the first. Find numbers for angles. I do not understand how to solve this equation.

284. logic

g --> h ~h v k g k --> w Prove: W

285. Biology

This is a choose the best answer question: The location of protein synthesis in eukaryotic cells is the a)nucleus. b)cytoplasm. c)plasma membrane. d)Golgi apparatus. d)vacuole. Ok so I know that the sites for protein sythesis are the ribosomes and there

286. world hhistory

the expansion of agriculture can be traced across sub saharan africa through the spread of the language group

287. Prcts chemistry

Calculate the pH of 0.0115M acetic acid solution at 25 degrees celcius with Ka = 1.75*10^-5

288. calculus

Sin2pieover13plus cos squared pie over 13 equals.

-3+x/1=-3

290. Math help!!

Solve 3(3-8x)+5

291. social studies

during which war was the Emancipation Proclamation issued£¿

asked by jennifer white
292. Algebra 116 A

What kind of interval notion do you get for this 9

293. mathemactics

what is the answer of 5\6 of 42pounds

asked by anshika arora
294. phl/251

What are contrasting metaphors for marriage?

295. Math

What is the classify system of Y=-3 and X=2

296. Math

What is the classify system of Y=-3 and X=2

297. English

Before writing a recommendation report to the CEO, Dee and Carlos distribute a survey to everyone in their company to determine which new benefits employees are most interested in. What part of the writing process does this activity represent?

298. math

use the bus shelter method to work out 1/8 as a decimal

299. geometry

exprimer que le cÃ´tÃ© bc en fonction de a

300. geometry

is it possible that the points a, b,c are collinear but AB + BC not equal AC

301. Math

Find the zeroes of the function algebraically. f(x)= ã-7x-2

302. science

uniform magnetic field is from west to east,electrons enter from north to south,so what is the direction of force acting on electron?

303. pre calculus

find the bounds on the real zeros????? f(x) = x^5 - 5x^4 +8x + 2

304. science

In which two seasons do most collisions with deer, moose and bears occur? PLS HELP

305. Social studies

What physical factors played a rolled in developing the geography of the four mayor natal regions of Texas

306. Geometry(High School)

How could you model two angles with a common vertex and a common side that are not adjacent angles?

307. Math

What is the definition of a solving equation?

308. English

Cara underwent microlaryngoscopy and bronchoscopy along with flexible bronchoscopy by the pulmonary department and bilateral myringotomy tube placement. I struggle with capitalization... Is pulmonary department capped? Thanks

309. logic

g --> h ~h v k g k --> w Prove: W

310. Math Urgent

Two surveyors with two-way radios leave the same point at 9:00am., one walking due south at 2 mi/hr and the other due west at 5 mi/hr. How long can they communicate with one another if each radio has a maximum range of 10 miles?

311. algebra II

I need to write a polynomial in SIMPLEST FORM having roots 2,-2 and 4. I have to gt rid of the parentheses by multiplying everything out.Did I do it correctly? Also, someone said yes, but I'm wondering if it suppose to have anything else done to it-it

312. math

using limits...finding the tangent line of the square root of x when x=2

313. Spanish

Is this how I say the boy is going to stand up? El muchacho va a levantarse.

asked by John H.
314. Science

Please help Thank you. Do you think we should have a special tax or a onetime payment that all people make to help improve air quality? Or should this be something that our government should budget on their own? Please answer in 100 words or more Thank

315. math

2-4n=10 please show how you get the answer thanks

316. English

to settle an argument.. is it correct to hyphenate She will be placed into a short-leg walking cast? I say yes! Thank you !

317. phl/251

need to write an example metaphor for a "place" and a "event"

318. regarding registration

i haven't recd confirmation mail

319. math

What Is The Integration Of (0)?

320. ap world

what are some similarities between the foraging and urbanized societies?

321. Science 6th grade

how can granite and slate peices be held together?

322. math

Number of People You Have Known Who Were Victims of Homicide # of Victims Frequency 0 3944 1 279 2 97 3 40 4 30 Find the median. Note that the “4 or more” category is not problematic for it. I know that the median is the middle number. I got 1.5 but

323. geography

The five countries are Senegal, Guinea, Guinea-Bissau, Gambia, and Mauritania.