# Questions Asked onJanuary 23, 2011

1. ## English

What is the theme of "Abalone, Abalone, Abalone" by Toshio Mori?

2. ## Geometry check my answer?

Wilbur Wrong is flying his remote control plane in a circle with a radius of 28 meters. His brother clocks the plane at 16 seconds per revolution. What is the speed of the plane? Express your answer in meters per second. The brothers may be wrong, but you

3. ## Physics

A 19 kg crate is placed on an inclined ramp. When the angle the ramp makes with the horizontal is increased to 23.2 degrees the crate begins to slide downward. what is the coefficient of static friction between the crate and the ramp? At what angle does

4. ## physics

A basketball player crouches while waiting to jump for the ball. He lowers his center of gravity is 0.30 m. When he jumps for the ball, his center of gravity reaches a height of 0.90 m above its normal position.(a) Calculate the velocity of the player when

5. ## Calc

The wind chill is the temperature, in degrees Fahrenheit, a human feels based on the air temperature, in degrees Fahrenheit, and the wind velocity (v), in miles per hour (mph). If the air temperature is 32degrees Fahrenheit, then the wind chill is given by

6. ## physics

Can you help me with this one also? I know how to do it with 3 vectors but I can't seem to draw it with 4 vectors. The magnitudes of the four displacement vectors shown in the drawing are A=16.0 m, B=11.0 m, C=12.0 m, and D=26.0 m. Determine the (1)

7. ## chemistry

what is thbe total number of molecules of so2 in a 0.10 mole same of so2

8. ## english

1. would it be difficult to procure in the desert? 2. how might someone react if you prvoke that person? 3. what might be the subject of a profound discussion? 4. if a critic is profuse in her praise of a movie, how well did she like the movie?

9. ## Physics

A very large, thin, flat plate of aluminum of area A has a total charge Q uniformly distributed over its surfaces. Assuming the same charge is spread uniformly over the upper surface of an otherwise identical glass plate, compare the electric fields just

10. ## health

What is a doctor’s responsibility if a patient requests restrictions on the use of his or her PHI? A. The doctor must comply with the patient’s wishes. B. The doctor need not comply with the patient’s wishes if HIPAA would otherwise permit

11. ## math

the probability of a computer memory chip being defective is 0.02. which of ghe following statements is true? a) in a shipment of 1000 chips, it is certain that at least one will be defective. b) in a shipment of 100 chips, two will be defective c)the

12. ## math (surface area)

i know the formula of a rectangles surface area is SA= 2(lw)+(wh)+(lh), but when the dimensions are : 2a for the height, a for the width, and 3a for the length, how do i solve?

13. ## physics

1 kg of ice at 0° C is mixed with 9 kg of water at 50° C (The latent heat of ice is 3.34x105 J/kg and the specific heat capacity of water is 4160 J/kg). What is the resulting temperature?

14. ## calculus

A rectangular box is to have a square base and a volume of 50 ft3. The material for the base costs 44¢/ft2, the material for the sides costs 10¢/ft2, and the material for the top costs 26¢/ft2. Letting x denote the length of one side of the base, find a

15. ## chemistry

A solution of acetic acid is prepared in water by adding 11.1 g of sodium acetate to a volumetric flask and bringing the volume to 1.0 L with water. The final pH is measured to be 5.25. What are the concentrations of acetate and acetic acid in solution?

VWXYZ is a rectangle-based pyramid where WX=66 cm and XY=32cm. The vertex is vertically above the center of the base. Given that the slant heights VA and VB are 56 cm and 63 cm respectively, find the total surface area of the pyramid. Additionally, find

17. ## AP Chem

For the system CO(g) + H2O(g)CO2(g) + H2(g) Kp is 1.6 at 900 K. If 0.400 atm CO(g) and 0.400 atm H2O(g) are combined in a sealed flask, what is the equilibrium partial pressure of CO2(g)?

18. ## Physics

A person of mass 55 kg stands at the center of a rotating merry-go-round platform of radius 3.4 m and moment of inertia 670 kg·m2. The platform rotates without friction with angular velocity 1.0 rad/s. The person walks radially to the edge of the

19. ## Physics

Driving in your car with a constant speed of 12 m s you encounter a bump in the road that has a circular cross-section. The radius of curvature of the bump is 35.2 m. At what speed must you go over the bump if people in your car are to feel "weightless"?

20. ## Physics ( Calculus & Mecahnics )

A proton with mass m moves in one dimension.The potential-energy function is where and are positive constants. The proton is released from rest a x0 = a/b. (a) Show that can be written as U(x) = a --- [ ( x0/x )^2 - x0/x ] x0^2 Graph U(x). Calculate U(x0)

21. ## Physics

A 300 g oscillator has a speed of 95.4 cm/s when its displacement is 3.00 cm and 71.4 cm/s when its displacement is 6.00 cm. What is the oscillator's maximum speed? Thank you!

A peregrine falcon dives at a pigeon. The falcon starts downward from rest and falls with free-fall acceleration. If the pigeon is 82.8 m below the initial position of the falcon, how long does it take the falcon to reach the pigeon? Assume that the pigeon

131. ## english

Is my sentence punctuated correctly? Even though it is almost summer, we still have overcast skies and light rain.

132. ## Chemistry

If 12.90 mL of a 18.2 Weight% solution of sodium chloride is diluted to a final volume of 3.00 liters, what is the Molar concentration of the diluted solution? The density of the original solution is 1.12 g/mL.

133. ## math 12

In a population of 328 snakes at a zoo, it is known that 162 are female. A scientist selected 50 snakes at random to run some tests. What is the probability that the scientist will select at least 30 female snakes?

134. ## College Chemistry

1. From data below, calculate the total heat (in J) associated with the conversion of 0.514 mol ethanol gas (C2H6O) at 451°C and 1 atm to liquid ethanol at 25.0°C and 1 atm. (Pay attention to the sign of the heat.) Boiling point at 1 atm 78.5°C cgas

145. ## Chemistry

Substance A has a density of 4.0 g/mL and substance B has a density of 2.0 g/mL. If we have equal-mass samples of each, which has the greatest volume?

146. ## chemistry

calculate the rms speeds of He at 10, 100, and 1000 K in meters per second and in miles per hour. What values would be otained if the pressure was 10^-10 bar

a ferric phosphate solution is prepared by adding 2.4 g of ferric phosphate to a volumetric flask and bringing the final volume to 1.00L by adding water having a phosphate concentration of 1.0 mg/L. what is the concentration of soluble iron in this

148. ## statistics

A researcher wants to determine if two brands of cigarettes contain the same amount of nicotine. The data is shown in the table. With a significance level of 0.05 to that conclusion can be reached. Set the interval for a confidence of 95% Sample A: 40.3

149. ## health

How do states handle access to non-identifying information for a party to an adoption? A. All states allow access to such information to anyone interested in it. B. All states allow an adoptive parent or a guardian of an adoptee to access the information.

150. ## Criminal Justice

Research Process and Terminology Paper To be proficient in research, one must know language and process. During this assignment, you will familiarize yourself with research terminology as you use the terms to write your paper. Prepare a 1,050- to

151. ## Finite Math

At a price of $1.94 per bushel, the supply corn in 9,800 million bushel and the demand is 9, 300 million bushel. At a price of$1.82 per bushel, the supply is 9,400 million bushels and the demand is 9, 500 million bushels. A, find a price-supply equation

152. ## geometry

A triangle has two angles that have measures of 22.5 degrees and 101 degrees. a. Find the measure of the third angle. b. Classify the triangle by its angle measures.

153. ## maths

the area of the union of squares with side 1cm whose centre lies on a fixed square with side 1cm is equal to what ?.

154. ## Trigonometry

Express the following in radians: f.1025degrees. --> (pi/180)*1025 = -185pi/36 Is that correct or theirs another way to do it ??

155. ## algebra 2

a store is offering a discount of 30% on a suit. There is a sales tax of 6%. A) using a composition of function, represent this situatio in which the discount is taken before the sales tax is applied. B) using a composition of functions represent the

156. ## chemistry

A 0.50 {\rm g} sample of vegetable oil is placed in a calorimeter. When the sample is burned, 18.9 {\rm kJ} are given off.

157. ## Math Grade 12 college

250(1.03)^n=400 solve for n

3/x-5=10/x+2

159. ## Astronomy

According to Newton's second law, when the same force acts on two bodies, the body with the larger mass will have the ________ acceleration.

160. ## Chemistry

When an unknown substance weighing 2.386g is heated for 5 minutes and cooled to room temperature, it's new weight is 3.183g. No smoke rose for the sample while it was heated and it turned from white to a slight yellow. Were the students performing this

161. ## Math

Find an equation of the line that passes through the point (3,10) and is parallel to the line x-3y=1

162. ## Science

For science class, we had to do a lab that involved parachuting eggs off a third floor window of our school. This lab would help us learn the forces of gravity, friction, and air resistence. We were supposed to construct a parachute that would make our egg

163. ## physics

what are vectors? and how do you us them. for example, i don't understand vector addition.

164. ## Physics

An airplane must reach a speed of 185 mi/h to take off. If the runway is 467 m long, what is the minimum value of the acceleration that will allow the airplane to take off successfully? m/s2 I have been trying the formula vf^2=Vi^2+2AD and solving for A SO

165. ## chemistry

what is the density of a piece of metal that has a mass of 18g and volume of 2mL

166. ## math

The area of a rectangle is 25 sq in and the perimeter is 25 in. Find the length of the smaller side; enter answer as decimal rounded to 1 decimal place, no units (e.g., 6.0)

167. ## English

Can you check these sentences for me, please? Thank you. 1) The king ruled over England from 1189 to 1199. During his absence/in his absence his younger brother became king. He was unpopular because he demanded high taxes. 2) The king was orced to sign a

168. ## Math

I am having trouble figuring out how to solve these logarithms. Could someone please help! log2(log4x)=1 and solve for x and y: (1/2)^x+y= 16 logx-y8=-3

169. ## chem

A small sterling silver braclet has a mass of 76.0g and a volume of 7.33ml(by water displacement) Calculate the mass and % Ag and the mass and % Cu in the braclet. Assume the volumes to be linerly additive. density of Ag= 10.5 g/ml;density of Cu=8.96 g/ml.

170. ## ALGEBRA

solve for u 3u - 16=5 (u - 6)

171. ## Chemistry

Which of the following is the BEST explanation for why a catalyst speeds up a reaction? A) The catalyst increases the concentration of the products B) The catalyst decreases the total pressure in the container. C) The catalyst raises the temperature of the

172. ## organic chemistry

What volume of physiological saline solution (90% by weight NaCl, in water) would give you a gram of salt when evaporated?

173. ## algebra

after diving 93m below sea level, a diver rises at a rate of 6 meters per minute for 8 minutes. where is the diver in relation to the surface? i can't figure this one out 6x8=72 72 + 93= 165 but this still doesn't look right at all!!!!!!!!

174. ## finance

Pick a company that pays dividends, then calculate the expected growth rate of your company using the CAPM. Once this task is complete, calculate the expected growth rate using the Constant Growth (or Gordon Growth) Model.

175. ## english

• Use at least five adverbs and five adjectives to write a 150- to 300-word review of a movie, sporting event, musical performance, or television show

176. ## Eng. Dynamics

A fire fighter is standing 20 m from a burning building as shown. She is holding a fire hose 1 m from the ground directed upward at 60° from horizontal with water coming out of the nozzle at 20 m/s. Find the distance from the edge of the roof to where the

177. ## chemistry

a ferric phosphate solution is prepared by adding 2.4 g of ferric phosphate to a volumetric flask and bringing the final volume to 1.00L by adding water having a phosphate concentration of 1.0 mg/L. what is the concentration of soluble iron in this

how can i make writing spelling sentences more interesting and fun?

179. ## Math

The distance between the points (14,-18) and (15,-8) is? The point (a,b) is such that (14,-18) is the midpoint of the segment from (15,-8) to (a,b). Then a and =?

180. ## Algebra

The function h is defined by h(x) . 6+x/4+2x Find h(2x)

I am having trouble figuring out how to solve this logarithms. Could someone please help! log2(log4x)=1 and solve for x and y: (1/2)^x+y= 16 logx-y8=-3

208. ## Math

1. (square rt. 5) +(square rt. 25) = 2. If y=x^2 +2x +k passes through the point (1,2), then k = 3. If F(x) = 1 +3x^2, where X cannot be 0, then F(x+2)-F(2)/(x) =

209. ## physics

Calculate the maximum height using the initial speed, half-time, and angle. The initial speeed is 18m/s, half time is 1.8, and the angle is 75. And how is this written out to solve.

210. ## chemistry

A system performs 120J work with no heat supplied to it. Calculate the change in internal energy of the system.

211. ## Precalculus

1. Simplify the expression ((5x^-2)/(4x^2))^-2 2. (x)/(x^2-81)-(9)/(81-x^2) = 3. Let (-3,3) and (-6,_2) be points in the Cartesian plane. Find the distance between the points.

212. ## com155

• Use at least five adverbs and five adjectives to write a brief review of a movie, sporting event, musical performance, or television show. • Bold each adverb (even the ones you are not counting as your original five, so that all adverbs are bolded in

213. ## chemistry

a 2 l gas bulb contains 4.07*10^23 N2 molecules. If the pressure is 3.05bar, what is the rms speed of the N2 molecules? What is the temperature?

214. ## physics

calculate the range of the projectile using the initial speed and angle. use 9.8m/s. Initial speed 18m/s and the is 75 degrees. I came up with 8.29 is that right

215. ## english

predicate?

Is the answer to G - 2 2/5 = 5 4/5 G = 7 6/5 ?

217. ## social studies

Why do you think the number of people who would represent each state in congress was so important to the delegates?

218. ## ordering numbers fractions

find equivalent fractions with a common denominator and order from least to greatest 3/42,5/6,7/21?

219. ## geometry

how do you exolain logic with converse, inverse, and contrapositive.

220. ## algebra

A dehydrated patient needs a 7.9% saline IV. Unfortunately, the hospital only has bags of 3% and 10% saline solutions. How many liters of each of these solutions should be mixed together to yield 3 liters of the desired concentration?

221. ## English

Can you help me fix this sentence, i can't word it correctly This era was struck with poverty, ...etc How can i write that there was poverty in this era..

222. ## English 12

In your understanding is this thesis statement clear enough? What other improvements would you make? The topic is "Theme of Overcoming struggle in the course text" Many themes are presented in: Hamlet, Death of a Salesmen, Life of Pi, the Road, and the

223. ## math

radius of 4 centimeters and length of 12 centimeters, how many cubic centimeters?

224. ## Math

5x + 4(x + 3) = 66

225. ## Chemistry

What is the pH of a one liter auqueous solution to which has been added 0.2 moles of acetic acid (CH3COOH)?

. (square rt. 5) +(square rt. 25) = 2. If y=x^2 +2x +k passes through the point (1,2), then k = 3. If F(x) = 1 +3x^2, where X cannot be 0, then F(x+2)-F(2)/(x) =

227. ## Trigonometry

Express the following in radians: a.135degrees. --> (pi/180)*135 = how can i end up with a fraction answer?? b.-15degrees. --> (pi/180)* -15 = same here what are the steps to do next to get a fraction answer.

228. ## algebra

A dehydrated patient needs a 7.9% saline IV. Unfortunately, the hospital only has bags of 3% and 10% saline solutions. How many liters of each of these solutions should be mixed together to yield 3 liters of the desired concentration?

229. ## Math

A triangle whose sides are 5, 12, and 13 inches is similar to a triangle whose longest side is 39 inches. What is the perimeter of the larger triangle?

230. ## Physics

A car accelerates from rest to 30m/s in 10s. What is the car's acceleration?

231. ## college math 209

simplify as much as possible y^2ã48yv^2 - vã12 y^5

232. ## english

what is the strongest argument for the use of discretion in doing out punishment. Malcolm Gladwell, No Mercy

233. ## Calc

Given function f defined by f(x) = ( 1- x)³. What are all values of c, in the closed interval [0,3], that satisfy the conditions of the Mean Value Theorem?

234. ## Pre-Calc

√(X+10) + √(X-6) = 8 Help would be greatly appreciated! Thanks!

235. ## Chemistry

If the equilibirium reaction is 2 03(g) 3 O2 9(g) is first order with respect to ozone, what type of plot( meaning what is plotted on the y axis vs what is plotted on the x-axis) will yield a straight line? what will the slope of the line represent? PLEASE

278. ## PHYSICS

A harmonic wave on a string moves along the x-axis according to: î(x,t) = 5.0 (cm) sin[ (2.5m-1) x - (63s-1) t ] At x = 1.0 m when t = 2.2 s the speed of the oscillations on the string is closest to ... 25.2 m/s 4.55 m/s 3.15 m/s 2.27 m/s 1.67 m/s

279. ## Medical Information Management

Medicaid eligibility is determined by? A. National Committee for Quality Assurance B. state of residence C. health care facility D. Centers for Medicare and Medicaid my answer is B, state of residence. i cant find this anywhere in my book. however when i

280. ## chemistry

what is the volume of a piece of wood that haas a mass of 6 g and a density of 0.5 g/mL?

. (square rt. 5) +(square rt. 25) = 2. If y=x^2 +2x +k passes through the point (1,2), then k = 3. If F(x) = 1 +3x^2, where X cannot be 0, then F(x+2)-F(2)/(x) =

282. ## Math

I am having trouble figuring out how to solve these logarithms. Could someone please help! log2(log4x)=1 and solve for x and y: (1/2)^x+y= 16 logx-y8=-3

283. ## social studies

Why would the new states want a weak government?

284. ## financial analysis

an item which may be converted to cash within one year or one operating cycle of the firm is classified as a

how can you condense these cos^3x* cos2x^2 cos^3x+ cos2x^2 cos^3x- cos2x^2 Thank you soo much

286. ## Chemistry

IF the rate of consumption of N2)4 (below) is .0221, what is the rate of production of NO2? N2O4(g)2NO2(g) Please help and explain. BC i have to actually understand how to do the problem. Thanks

287. ## physics

A yo-yo has a rotational inertia of 810 g·cm2 and a mass of 95 g. Its axle radius is 2.6 mm and its string is 100 cm long. The yo-yo is thrown so that its its initial speed down the string is 1.0 m/s. (a) How long does the yo-yo take to reach the end of

288. ## algebra

-(x-v)+4 (4v + 2x)

289. ## Chem- Dr Bob

NO(g) + CO2(g)NO2(g) + CO(g) delta H^degree sign = -100kJ Which of the following will favor the forward reaction? Why? A) add NO B) remove NO2 C) decrease the volume of the container D) raise the temperature E) add CO Not sure why the last posting didn't

290. ## trig

To calculate the height of a cliff, a surveyor takes the following measurements. The cliff's shadow is 12m, while at the same time a meter stick has a shadow of 2m. Draw a diagram and find the height of the cliff.

291. ## history

I have to make do a 3d affect in a shoe box of a famous black peson. I came up with marion anderson singing at the white house. How or what can I do to make the 3d affect

292. ## media world

How have modern social media sites affected commerce? Include positive and negative examples in your answer.

293. ## interior decoration

what is known by elements of design

294. ## Math

which of the following sums is larger and by how much? 1. 7 over Sigma 15/4(pi/10)^n 2. 11 over Sigma 17/4(4/13)^n please help me with the steps on how to figure this out! thanks

295. ## Pre-Cal: Trig

The point (7,2) determines a poistion angle "t". Find the exact value of sin(t).

296. ## Pre-Cal: Trig

The point (7,2) determines a position angle "t". Find the exact value of sin(t).

297. ## ENG 121 English Composition I

I need some one to look over this and tell me where my mistakes are please THE BEGANING TO MY BEGANING I decided to return to school about two years ago my reasoning for returning back to school was I seen how many of my friends and family members were

298. ## MATH

Factorize the following : x4-x2-6 HELP!!!!!!

299. ## Math

how can you condense these cos^3x* cos2x^2 cos^3x- cos2x^2 Thanks a lot :)

300. ## Help! Physics!

A person walks 23o north of east for 4.8 km. How far would a person walk due north and due east to arrive at the same location.

301. ## MATH

Factorize the following : x4-x2-6 HELP!!!!!!

302. ## AP Chemistry

calculate the molar volume (volume of 1.0 mole) of an ideal gas at 1.0 atm and 25 degrees celsius

303. ## algebra

solve for, where u is a real number sqrt 9u - 10 = sqrt 5u + 16

304. ## algebra

Chu and Juan are each saving to buy the same two cd's. Chu is lacking $22 and Juan is lacking$3. When they combine their money they still do not have enough to buy the two cd's. What is the greatest number of whole dollars the two cd's could cost?

305. ## math

solve -14is less then and equal to 3x -7less than and equal to -2

306. ## Science

Define reacting variable.

307. ## physics

Multispectral refers to: A. UV, IR, and visible light B. the many colors in visible light C. UV, IR, and x-rays Thanks!

308. ## Math

sin2x-cosx (0

309. ## Algebra

(a-x)/(b-x)=c/(x-b) How do i go about solving this?

310. ## science

Tyler put a cube of blue closed-cell foam in a syringe and clamped the end shut.When he pushed the plunger down the cube get smaller. What happened to the particles outside the cube? What happened to the particles inside the cube?

311. ## space

2 birds fly from their nest to get to a certain spot(food) in a straight line,from opposite directions (east-west) Both fly 60 km/hr.but one has a 44 km/hr tailwind to his advantage(disadvantage for the other.The bird with the advantage gets to the feeding

312. ## Calculus

What is the slope-intercept equation of the line tangent to the graph of y=8ln(x) when x=5.

313. ## Physics

1. What do we mean when we say that the motion is relative?

314. ## algebra

Solve |2x -5| > 7

316. ## social studies

what is a bill? what is a green paper? what is a white paper?

In what type(s) of culture would an egalitarian leader thrive best?

318. ## algebra

The sum of two consecutive integers is between 5 and 9. What are the two integers? Tell the two numbers only

319. ## english

What effect does lacking personal responsibility have on materialism?

320. ## need help

i'm in the 4th grade i need a socialstudy project to do rightnow i cant seam to think of anything can you help me please and thankyou

321. ## biology

I am posting this question in Biology instead of Algebra even though it is a question from my Algebra class. Thanks. A male bee has only one parent(a mother) and a female bee has two parents (a mother and a father).Assuming all ancestors are distinct, how

322. ## chemistry

which solution formed only by gases

323. ## Math

x/4 - 3x/2 = -1/2

324. ## HEALTHCAREFINANCE

A HOSPITALREPORTED NETINCOMEFOR 2007 OF 2.4 MILLION ON TOTALREVENUES OF 30.MILLION.HAD A DEPRECIATION EXPESENETOTAL OF 1 MILLION SO WHAT IS THE TOTAL EXPENSE FOR2007?

325. ## Algebra

The function h is defined by h(x) . 6+x/4+2x Find h(2x)

326. ## math 12

In his best year, Mickey Mantles batting average was o.365. In that year, what was the probability that he would get exactly 5 hits in 15 times at bat? Compare the results from the normal approximation with the results from a calculation using a binomial

327. ## math

3 10 ____ = ____ x-5 x+2

328. ## com/155

I think I found all the errors. What do you think?

329. ## RE

how do i draw a film poster of joseph to moses....

330. ## science

I need a website on elements and dont

331. ## college algebra

how do i solve 8-5/x=2+3/x

X-120

333. ## Math

The solution set of the equation (absolute value 2-4x )=12 is

334. ## History

what type of poverty occured in the early middle ages?

335. ## mathematics

find value of tan44degrees using integrals

336. ## nutrition

arguments being raised by the Grocery Manufacturers of America

337. ## us history

I need help with finding the defintions to a word.

339. ## Composition

Looking for guidance. Below are two paragraphs I wrote concerning how interest rates affect our purchasing. The first sentence in each I have identified as my topic sentence. I question if the major points are stated clearly; are supported by specific

341. ## chemistry

How many grams are in one milliliter?

342. ## Medical Information Management

A company that provides comprehensive health care services on a prepayment basis to voluntarily enrolled participants is called a? A. Medicaid participant. B. health maintenance organization (HMO) C. preferred network association. D. Medicare provider. my

343. ## physics

Points A and B move along two adjacent parallel paths. Initially A is 100 ft to the left of B, and each point has a velocity of 5 fps to the right. the velocity of A remains constant and the acceleration of B is 2 fps2 to the left. Determine the total

344. ## Math (Algebra)

What is the minimum point of the graph of the equation y=2x^(2) + 8x +9?

345. ## Algebra

I need help finding the the indicated outputs for f(x)=4x^-5x f(0) f(-1) f(2)

346. ## math

solve by substitution (3/7)x + (5/9)y = 27 (1/9)x + (2/7)y = 7

347. ## Pre Calc

√(x+2) -7 =√(x+9)

348. ## statistics

To display the major of a sample of college students, which graph would be the best choice?

349. ## American government

Whenever Congress has a perceived need for ongoing control of an econmic activity, it has tended to create a ?

350. ## physics

;if a hoop A is made of iron & hoop B of wood are pushed at same time down to an inclined plane. find velocity of both if height of plane is 1m?

1. Simplify the expression ((5x^-2)/(4x^2))^-2 2. (x)/(x^2-81)-(9)/(81-x^2) = For the first one the answer was 16x^8/25 but I don't know how to get that. For the second one the answer is 1/x-9 and I also don't know how to get that one.

352. ## statistics

A researcher wants to determine if two brands of cigarettes contain the same amount of nicotine. The data is shown in the table. With a significance level of 0.05 to that conclusion can be reached. Set the interval for a confidence of 95% Sample A: 40.3

353. ## Geology

How does the geothermal gradient vary with depth within the Earth?

354. ## college math 209

simplify the following expression -(x) + 4 (4 v + 2x)

355. ## Maths

Dora and Paul have a collecttion of x marbles.Dora has x/3.What is the fraction of the marbles does Paul have?

356. ## Math!

x/4 - 3x/2 = -1/2 I do not understand at all

357. ## math

Stuck here Question wants the correct number of significant figures. tan^-1 (9/7)=?

358. ## Math trignometry

how can you condense these cos^3x* cos2x^2 cos^3x+ cos2x^2 cos^3x- cos2x^2 Thanks a lot :)

359. ## algebra

A dehydrated patient needs a 7.9% saline IV. Unfortunately, the hospital only has bags of 3% and 10% saline solutions. How many liters of each of these solutions should be mixed together to yield 3 liters of the desired concentration?

11b,6=b-5

361. ## Math

2/7 k - 1/14 k = -3 does k= -42?

362. ## intermediate algebra

trying to find the equation of each line in slope-intercept form. slope -5; y-intercept 1/2

363. ## volume

Jasmine is a manufacturing engineer who is trying to find out if she can use a 20-inch-by-12 inch sheet of cardboard and a 15-inch-by-16-inch sheet of cardboard to make boxes with the same height and volume. Is such a pair of boxes possible? Please give

364. ## ENG 121 English Composition I

can some one tell me where my mistakes are in this essay please need my tomorrow night. (here is my paper) THE BEGANING TO MY BEGANING I decided to return to school about two years ago my reasoning for returning back to school was I seen how many of my

365. ## geometry

could a kite be equilateral? could a square or rhombus be a kite ? is it possible to be a kite?

366. ## com155

I need helping pointing out all the verbs and tenses. My education plays (present tense) a very important role in my life. It will be (future tense) a major role in my successful financial planning. I have completed (present perfect tense) a personal

367. ## Math

c - 1/4c = 49.95

368. ## college math 209

find the values for x and y 4x - 9= -15 -3x - 4y = 22

3p^2+4P^2=63

3p^2+4P^2=63

3p^2+4P^2=63

372. ## english

7. Which of these sentences is correct or illustrates the best style? (Points : 1) The report was thorough. Furthermore, it saved the department several hundred dollars. The report was thorough. It saved the department several hundred dollars. The report

373. ## Algebra

(a-x)/(b-x)=c/(x-b) How do i go about solving this?

374. ## Pre algebra

-3(4x+3)+4(6X+1)=43 Need to solve

375. ## MATH

Find the value of n n4=16 n=? 6n=216 n=? 5n=625 n=? 11n=1331 n= can someone help me do this?

376. ## SCIENCE

What are floridas Resources? they don't only have 2 be natural? GRACIAS

377. ## Math

A rectangular room has a perimeter of 94 and area of 546. What are the dimensions of the room?

378. ## college math 209

simplify as much as possible y^2sqrt 48yv^2 - vsqrt 12 y^5

379. ## social studies

i need a list og lanformations in weirton wv or near weirton wv

380. ## geometry

si quiero poner 5 litros de agua en una piramide cuadrangular cuanto debe de medir ?