Thursday

July 24, 2014

July 24, 2014

**Recent Homework Questions About First Aid**

Post a New Question | Current Questions

**statistics**

Community Health center, a new patient clinic in your town serving only underinsured and uninsured patients, has asked you to help its health information management department get started. calculate the number of new shelving units needed for a medical record filing system ...
*Saturday, October 19, 2013 at 3:41pm*

**Probability **

Serena Williams won the 2010 Wimbledon Ladies Singles Championship. For the seven matches she played in the tournament, her total number of first serves was 379, total number of good first serves was 256, and total number of double faults was 15. a. Find the probability that ...
*Saturday, October 19, 2013 at 6:16am*

**Math**

Gray bought two plots of land for a total of 120000 on the first plot she made a profit of 15% on the second plot she lost 10% .her total profit 5500, how much did she pay for each piece of land? (Please show the whole procedure of this math with the rough works) Thank you so ...
*Saturday, October 19, 2013 at 5:37am*

**english**

D. She considers it part of her heritage. 14. What pronoun would be used for the narrator(s) of a story such as “A Rose for Emily,” which is written in the first-person, plural point of view? A. I C. We B. You D. He 15. In the dramatic point of view, the author A. ...
*Saturday, October 19, 2013 at 2:37am*

**English**

There are seven books. A series of eight movies based on the novels has been made by Warner Bros. They started making the movies in 2001. The first one was released on November 16th 2001. The second to the fifth were released respectively on 2002, 2004, 2006 and 2007. (Would ...
*Saturday, October 19, 2013 at 12:01am*

**Trigonometry - Slopes stuff**

Point A is the terminal point of angle phi and point B is the terminal point of angle theta. Point A is in the first quadrant and point B is in the second quadrant, while tan phi = 1 and tan theta = -7. Find the slope of AB. Ok so since A is in the first quadrant and tan phi...
*Friday, October 18, 2013 at 10:14pm*

**Statistics **

Serena Williams won the 2010 Wimbledon Ladies Singles Championship. For the seven matches she played in the tournament, her total number of first serves was 379, total number of good first serves was 256, and total number of double faults was 15. a. Find the probability that ...
*Friday, October 18, 2013 at 2:01pm*

**Math**

Gray bought two plots of land for a total of 120000 on the first plot she made a profit of 15% on the second plot she made 10% profit her total profit 5500, how much did she pay for each piece of land? (And please show the full procedure of the math even the rough work as well...
*Friday, October 18, 2013 at 12:44pm*

**Math**

Gray bought two plots of land for a total of 120000 on the first plot she made a profit of 15% on the second plot she made 10% profit her total profit 5500, how much did she pay for each piece of land?
*Friday, October 18, 2013 at 11:31am*

**CHEMISTRY**

1.) A solution is prepared by dissolving 5.00 g of stannic nitrate in enough water to make 250.0 mL of stock solution. A 15.0 mL aliquot (portion) of this stock solution is then removed and added to 75.0 mL of water. Calculate the concentrations of all ions in the final ...
*Thursday, October 17, 2013 at 9:41pm*

**Pre Algebra**

In Wilbur's math class, his grade is based on the average score of six tests, each worth 100 points. Wilbur always worries about his grade. He knows that his average on the first four tests is 88.5. What is the lowest average he could get on his next two tests and still ...
*Thursday, October 17, 2013 at 8:58pm*

**Health**

Read the passage below, and then answer the questions that follow. "As Marty pulled away from the curb, he thought about Sina's answer. He didn't understand it. Her response was ambiguous. Marty thought that maybe she wouldn't skip school with him and his ...
*Thursday, October 17, 2013 at 8:10pm*

**math**

The sum of three numbers is 92. The first number is 1/3 of the second, and the second is 2/5 of the third. What is the second number?
*Thursday, October 17, 2013 at 7:28pm*

**math**

Class ring:$89 Group discount:17% Sales tax:5% make sure to calculate the discount price first and then calculate the tax round to the nearest penny
*Thursday, October 17, 2013 at 5:44pm*

**algebra**

Miranda beat Robinson in a game of tennis, winning 6 games to Robinson's 3. 5 games were won by the team who didn't serve. Who served first
*Thursday, October 17, 2013 at 5:06pm*

**math**

A bag contains 5 red, 4 white and 6 blue marbles. Another bag with 9 blue marbles has the same ratio of blue to white marbles as the first bag. How many white marbles are there in the second bag?
*Thursday, October 17, 2013 at 2:22pm*

**Business Success**

PREPARING FOR BUSINESS SUCCESS 1. When looking for capital, bankers and other lenders will usually feel most comfortable investing in a/an A. really original idea for a business. B. chain of new businesses. C. brand new business. D. existing business with a proven record. 2. ...
*Thursday, October 17, 2013 at 10:44am*

**Math**

Darren is trying to improve his typing speed. On his first practice assignment, he types. 198 words in 6 minutes. On his second assignment, he types 248 words in 8 minutes. Did his speed improve? Tell how you know.
*Wednesday, October 16, 2013 at 9:03pm*

**Math**

An employee working at an electronics store earned $3582 for working 3 months during the summer. What did the employee earn for the first two months? I got $2388 I used a proportion and got 3582/3=x/2 solve for x then i divided 2388/3 and got my answer
*Wednesday, October 16, 2013 at 7:51pm*

**statistics**

When Trevor and Brian play ping pong, the probability that Trevor will win is 0.6. If Trevor and Brian play two games of ping pong, find the probability that Trevor wins the first game and Brian wins the second. Assume games are independent. Give your answer as a decimal to ...
*Wednesday, October 16, 2013 at 4:05pm*

**Science**

What can scientists learn from the rate at which radioactive elements decay? A. a rock's absolute age* B. the relative age of rock layers C. where one soil horizon ends and the next begins D. the difference between molds and casts. After six half-lives, what percentage of ...
*Wednesday, October 16, 2013 at 3:03pm*

**Science**

What can scientists learn from the rate at which radioactive elements decay? A. a rock's absolute age* B. the relative age of rock layers C. where one soil horizon ends and the next begins D. the difference between molds and casts. After six half-lives, what percentage of ...
*Wednesday, October 16, 2013 at 1:58am*

**Medical Coding**

The patient is an 18-day old baby girl admitted after it was noticed she was placed on intravenous Cefotaxime and Ampicillin, later changed to Cefotaxime and Clindamycin. A culture taken from the umbilical corstump grew Straphylococcus aureus and Grouo H streptocooccus. After ...
*Tuesday, October 15, 2013 at 9:51pm*

**PHYSICS**

A 970kg car is at the top of a 38m -long, 2.5 ∘ incline. Its parking brake fails and it starts rolling down the hill. Halfway down, it strikes and sticks to a 1280kg parked car. Ignoring friction, what's the speed of the joined cars at the bottom of the incline? What...
*Tuesday, October 15, 2013 at 7:58pm*

**english**

9. Cell phones were first invented in the early 1970s by Martin Cooper, "vice-president" of the Motorola company, and they were so large they were called “The Brick.” (1 point) cell phones invented Martin Cooper The Brick 10. This area of the country ...
*Tuesday, October 15, 2013 at 7:48pm*

**Math Explanation**

Explain why estimating before you divide 624/6 =helps you place the first digit in the quotient.
*Tuesday, October 15, 2013 at 7:31pm*

**math**

9. Cell phones were first invented in the early 1970s by Martin Cooper, vice-president of the Motorola company, and they were so large they were called “The Brick.” (1 point) cell phones invented Martin Cooper The Brick 10. This area of the country contains six very ...
*Tuesday, October 15, 2013 at 6:06pm*

**finance**

Your finance text book sold 49,500 copies in its first year. The publishing company expects the sales to grow at a rate of 23.0 percent for the next three years, and by 9.0 percent in the fourth year. Calculate the total number of copies that the publisher expects to sell in ...
*Tuesday, October 15, 2013 at 5:54pm*

**math**

A Competition Onstage Ever since Lisa auditioned for the musical Annie in the third grade, she had been seriously interested in musical theater. She loves to sing, dance, and act. She performs in two or three shows in her city each year. This year, Lisa was excited to audition...
*Tuesday, October 15, 2013 at 5:32pm*

**chem**

H2o2+3i+2h -----> I3+2H2o In the first 10.0 second of the reaction the concentration of I dropped from 1.000M to 0.868M a) calculate the average rate of reaction for iodine in this time interval. b) Determine the rate of change in the concentration of H during this time ...
*Tuesday, October 15, 2013 at 4:08pm*

**Science- Earth and its History**

What can scientists learn from the rate at which radioactive elements decay? A. a rock's absolute age* B. the relative age of rock layers C. where one soil horizon ends and the next begins D. the difference between molds and casts. After six half-lives, what percentage of ...
*Tuesday, October 15, 2013 at 3:18pm*

**Physics**

Consider an ideal spring that has an unstretched length l0 = 3.3 m. Assume the spring has a constant k = 23 N/m. Suppose the spring is attached to a mass m = 6 kg that lies on a horizontal frictionless surface. The spring-mass system is compressed a distance of x0 = 1.6 m from...
*Tuesday, October 15, 2013 at 1:40pm*

**physics**

A block of mass m = 4 kg slides along a horizontal table when it encounters the free end of a horizontal spring of spring constant k = 14 N/m. The spring is initially on its equilibrium state, defined when its free end is at x=0 . Right before the collision, the block is ...
*Tuesday, October 15, 2013 at 1:38pm*

**Science**

What can scientists learn from the rate at which radioactive elements decay? A. a rock's absolute age* B. the relative age of rock layers C. where one soil horizon ends and the next begins D. the difference between molds and casts. After six half-lives, what percentage of ...
*Tuesday, October 15, 2013 at 11:46am*

**Math**

find the coordinates of the point on the curve xy = 10 in the first quadrant such that the normal line passes through the origin
*Monday, October 14, 2013 at 10:01pm*

**Math**

What does it mean to use compatible numbers to decide where to place the first digit of the quotient?
*Monday, October 14, 2013 at 8:58pm*

**math explanation**

How can you tell before you divide 387 by 4 that the first digit of the quotient is in the tens place?
*Monday, October 14, 2013 at 8:41pm*

**pigskin geography week 7**

name the teams that will travel to a bordering state to engae in competition. -------vs------- -------vs------- I know the first one is tampa bay buckaneers vs. antlanta falcons
*Monday, October 14, 2013 at 7:53pm*

**Math Division**

What does it mean to use compatible numbers to decide where to place the first digit of the quotient? You can use 813/9= as an example.
*Monday, October 14, 2013 at 7:28pm*

**physics **

A bullet of mass 10 g has a speed of 500 m/s. a) What is its kinetic energy? b) if it penetrates a block of wood a distance of 10 cm before coming to rest, what is the average frictional force stopping the bullet? A second bullet identical to the first is shot through a sheet ...
*Monday, October 14, 2013 at 6:37pm*

**Algebra 1**

One long-distance telephone company offers a plan such that the first 20 minutes costs $.99 and each additional minute costs $.09. Solve an inequality to find the maximum amount of full minutes you can talk for $5.00. At first I got: 5 is greater than or equal to .99+(1.8-.09m...
*Monday, October 14, 2013 at 6:00pm*

**Algebra 1 **

1). A sales representative is given a choice of tow paychecks plans. One choice includes a monthly base pay of $300 plus 10% od his sales. The second choice is a monthly salary of $1200. For what amount of sales would the representative make more money with the first plan? 2...
*Monday, October 14, 2013 at 5:32pm*

**physics**

A rock climber throws a small first aid kit to another climber who is higher up the mountain. The initial velocity of the kit is 16 m/s at an angle of 55° above the horizontal. The kit is caught right at the peak of the its trajectory. What is the vertical height between ...
*Monday, October 14, 2013 at 4:22pm*

**biology**

The frequency of carriers of this disease is 0.02 in a particular population. Consider many couples like 6 and 7 where one parent is affected and the other is unaffected. On average, what is the chance that the first child of these couples will be affected? Please give a ...
*Monday, October 14, 2013 at 3:58pm*

**finance**

The First Bank of Ellicott City has issued perpetual preferred stock with a $100 par value. The bank pays a quarterly dividend of $1.65 on this stock. What is the current price of this preferred stock given a required rate of return of 13.0 percent?
*Monday, October 14, 2013 at 2:53pm*

**Math**

Sari has to read a book for English class by the end of the week. She wants to read at least 200 pages in the first 5 days of the week. On average, how many pages should Sari read per day to meet her goal? Answer: p >= 40
*Monday, October 14, 2013 at 12:26pm*

**English**

Many parents are guilty of "cajoling" their children with treats to get them to do something. What does cajoling mean? a. tricking b. persuading c. pleasing d. bullying In which of the following sentences is the gerund italicized? a. Running is Jonathan's first ...
*Sunday, October 13, 2013 at 5:56pm*

**physics**

In the first 3.8 seconds of a bobsled run, the 57 kg sled is pushed until it reaches a speed of 1.1 m/s. The flat surface has a coefficient of friction of 0.06. What is the acceleration of the sled in this time? What constant force is exerted by the bobsled team?
*Sunday, October 13, 2013 at 5:32pm*

**college essay**

can someone help me edit this My Song My existence thus far has been a musical performance. The world is my stage, the platform upon which I express myself creatively. My life is the reputable melody that I play on my guitar, and the notes are my memories and life experiences...
*Sunday, October 13, 2013 at 9:39am*

**Chemistry**

Element L has an average atomic mass of 54.2488 amu and is composed of two isotopes. The first has a mass of 55.2036 amu and makes up 41.030% of a standard sample. What is the mass of the second isotope? I under how to get average atomic mass but not sure how to get the second...
*Saturday, October 12, 2013 at 5:31pm*

**Algebra 2**

For the first time customers, a bank will open an account with $25 included. This bank also charges a monthly $2.95 service fee on the account. Write an equation that shows the balance B after m months, assuming no other activity is made on the account. Find the balance in the...
*Saturday, October 12, 2013 at 11:40am*

**Physics Urgent please help**

Consider an ideal spring that has an unstretched length l_0 = 3.5 m. Assume the spring has a constant k = 36 N/m. Suppose the spring is attached to a mass m = 8 kg that lies on a horizontal frictionless surface. The spring-mass system is compressed a distance of x_0 = 1.9 m ...
*Saturday, October 12, 2013 at 4:11am*

**English**

What is the participle in the participle phrase italicized below? Refusing to settle for less (italicized), the girl kept searching for her job. A. refusing B. settle C. for D. less A What does the compound word foremost mean based on what you know about the words "fore&...
*Friday, October 11, 2013 at 11:23pm*

**math**

–x + 6y = 30 y = -1/6 x + 5 how do I identify the slope and the y-intercept of the equation for the second one and change the equation into slope-intercept form for the first one? I will do the rest on my own thanks
*Friday, October 11, 2013 at 4:28pm*

**Social Studies**

Which culture carried the knowledge of iron tools across Southern Africa? A. Nubians B. Arabs C. Bantu D. Europeans C Which group of foreign traders first became involved in Eastern Africa's slave trade? A. Arabs B. British C. Dutch D. Portuguese D
*Friday, October 11, 2013 at 2:22pm*

**fast answer plss**

the sum of four angles about a point is 360degree.the measure of the 2nd angle is 6degreemore than 3times the 1st,the measure of the 3rd is 3degree more than twice the first,the measure of the 4th is 20 degree less than the 3rd.what is the measure of each angle?
*Friday, October 11, 2013 at 10:13am*

**answer fast plsss**

the measures of the2nd angle of a triangle is 20degree more than the complements of the first triangle and the 3rd angle is 4 degree less than half the supplement of the 1st.find the measure of each angle
*Friday, October 11, 2013 at 9:46am*

**physics**

Consider an ideal spring that has an unstretched length l0 = 3.9 m. Assume the spring has a constant k = 20 N/m. Suppose the spring is attached to a mass m = 6 kg that lies on a horizontal frictionless surface. The spring-mass system is compressed a distance of x0 = 1.7 m from...
*Friday, October 11, 2013 at 9:46am*

**answer fast plsss**

the measures of the2nd angle of a triangle is 20degree more than the complements of the first triangle and the 3rd angle is 4 degree less than half the supplement of the 1st.find the measure of each angle
*Friday, October 11, 2013 at 9:46am*

**Fluid Mechanics**

Consider a flow whose velocity field is given by u = y, v = −x The streamlines are circles centered at the origin, and this flow is an example of a solid-body rotation. As shown in the figure, a small square fluid element is placed at the point (x,y)=(0,1) at t=0: it ...
*Friday, October 11, 2013 at 6:03am*

**physics**

Consider an ideal spring that has an unstretched length l0 = 3.9 m. Assume the spring has a constant k = 20 N/m. Suppose the spring is attached to a mass m = 6 kg that lies on a horizontal frictionless surface. The spring-mass system is compressed a distance of x0 = 1.7 m from...
*Friday, October 11, 2013 at 4:40am*

**statistics**

6. Out of eight numbers, what is the probability of drawing a two on the first draw and a three on the second draw using sampling with replacement?
*Thursday, October 10, 2013 at 10:41pm*

**Inequalities (Math)**

Sari has to read a book for English class by the end of the week. She wants to read at least 200 pages in the first 5 days of the week. On average, how many pages should Sari read per day to meet her goal? (1point) I think it's p<40....
*Thursday, October 10, 2013 at 7:33pm*

**Physics**

Consider an ideal spring that has an unstretched length l0 = 3.9 m. Assume the spring has a constant k = 20 N/m. Suppose the spring is attached to a mass m = 6 kg that lies on a horizontal frictionless surface. The spring-mass system is compressed a distance of x0 = 1.7 m from...
*Thursday, October 10, 2013 at 3:31pm*

**Chemistry**

Geologists can estimate the age of rocks by their uranium-238 content. The uranium is incorporated in the rock as it hardens and then decays with first-order kinetics and a half-life of 4.5 billion years. A rock is found to contain 82.7% of the amount of uranium-238 that it ...
*Thursday, October 10, 2013 at 11:36am*

**physics**

Consider an ideal spring that has an unstretched length l0 = 3.9 m. Assume the spring has a constant k = 20 N/m. Suppose the spring is attached to a mass m = 6 kg that lies on a horizontal frictionless surface. The spring-mass system is compressed a distance of x0 = 1.7 m from...
*Thursday, October 10, 2013 at 10:34am*

**statistics**

In 2006, 75.9% of first-year students said they used the Internet for research or homework. Administrators found that 168 of an SRS of 200 first-year students used the Internet for research or homework. Is the proportion of first-year students who used the Internet for ...
*Wednesday, October 9, 2013 at 10:29pm*

**Social studies help please**

1. Great early American civilizations built large cities In Central and South America In Alaska On the plains of North America In Asia 2. Spanish explorers first arrived in the Americas In the nineteenth century In the late 1400s In the late 1500s In the seventeenth century 3...
*Wednesday, October 9, 2013 at 7:57pm*

**history**

How did early Muslim empires generally treat conquered people? A: they were allowed to become first-class citizens upon converting to islam B: they were forced to give up their religions and convert to islam C: their religions were tolerated, but restrictions and taxes were ...
*Wednesday, October 9, 2013 at 6:32pm*

**General genetics**

I'm trying to find out how we know that bacteria involves contact before the transfer of DNA during conjugation. In the book, all they say is that DNA is not transferred along the f pilus as previously thought, but it is contacted first, then a channel opens up for the ...
*Wednesday, October 9, 2013 at 3:34pm*

**math**

Maria decides to donate $1 to her favorite charity the first week of the month and to double the amount she donates each week. how much will she donate the 6th week?
*Wednesday, October 9, 2013 at 2:40pm*

**Calculus**

A baseball diamond is a square with sides of length 90 ft. A batter hits the ball and runs toward first base with a speed of 21 ft/s. At what rate is his distance from second base changing when he is halfway to first base? At what rate is his distance from third base changing ...
*Tuesday, October 8, 2013 at 10:32pm*

**Physics**

A 23.9kg box rests on a table. A 16 kg box is placed on top of the first box, as shown. determine the total in N that the table exerts on the first box.
*Tuesday, October 8, 2013 at 5:09pm*

**math pre-agebra **

how do i write this equation cars the marton family took a vacation that covered a total distance of 1356 miles. the return of the trip was 284 miles shorter than the first part of the trip. how long was the return trip?
*Monday, October 7, 2013 at 7:24pm*

**Geography (Ms. Sue)**

1). As a train moves eastward after passing over the Ural mountains, what is the first major stop? A: ? 2). What railroad would you take if you wanted to pass north of Lake Baikal? A: You would take the Baikal-Amur Mainline?
*Monday, October 7, 2013 at 3:20pm*

**physics**

Two soccer players start from rest, 32 m apart. They run directly toward each other, both players accelerating. The first player’s acceleration has a magnitude of 0.55 m/s2. The second player’s acceleration has a magnitude of 0.40 m/s2. (a) How much time passes ...
*Monday, October 7, 2013 at 1:33pm*

**poetry (Pioneer by Dorothy Livesay)**

I have to answer the questions according to this poem, I have answered them but just want someone to look over them to see if they are right. The last one I had trouble with and need help on that one too. The answer that I think it is I have put arrows on them. Help would be ...
*Monday, October 7, 2013 at 11:54am*

**Chemistry**

Identification of an unknown powdered metal by reaction with HCl: Why does the pH of the HCl solution initially increase very slowly when an unknown metal is first added to the acid solution, but gradually increase at a faster rate as the reaction proceeds to completion?
*Sunday, October 6, 2013 at 11:53pm*

**College Math 45**

Mrs. Brown has 17 children in her first-grade class, and Mr. Lopez has 20 children in his second-grade class. The principal has been asked to select 1 student from one of the classes to appear at a PTA meeting. How many ways can the selection be made?
*Sunday, October 6, 2013 at 11:23pm*

**math prob**

Twelve people attend the first meeting of the Star Wars Club. They exchange e-mail addresses. How many exchanges take place?
*Sunday, October 6, 2013 at 11:17pm*

**Journalism**

I tried writing the opening to my article on vegetarianism and this is what I got so far. [A lot of people like to sit down at night and eat a big, juicy steak – and then there are those who prefer an organic meal without any meat. Vegetarianism is not uncommon, but it&#...
*Sunday, October 6, 2013 at 4:56pm*

**Physics**

A stone is thrown up vertically from the ground (the gravitational acceleration is g = 10 m/s^2 ). After a time dt =1 s, a second stone is thrown up vertically. The first stone has an initial speed v1 = 11.0 m/s, and the second stone v2 = 16.0 m/s. (a) At what time after the ...
*Sunday, October 6, 2013 at 8:16am*

**Statistics**

You are dealt a hand of three cards, one at a time. Find the probability that your third card is your first jack. A) 0.068 B) 0.145 C) 0.127 D) 0.077 E) 0.00018 How do I set this problem up?
*Saturday, October 5, 2013 at 9:28am*

**Math Poster Project**

I have do complete a poster for math but I have some confusing instructions at first. Please help me understand and provide an example using the directions below that were given to me: Choose four rational numbers. At least two of your numbers should be between -1 and 1, one ...
*Saturday, October 5, 2013 at 8:54am*

**Statistics**

You are dealt a hand of three cards, one at a time. Find the probability that your third card is your first jack. A) 0.068 B) 0.145 C) 0.127 D) 0.077 E) 0.00018
*Friday, October 4, 2013 at 7:54pm*

**Maths**

A had the same number of roses as B after A had given 7 of her roses to B. How many more roses did A had than A at first?
*Friday, October 4, 2013 at 1:25am*

** Math**

If I get 1 dollar for the first A plus 2 dollars for the second A and 4 for the thirs A and so on doubling with each additional A, and I get 8 different grades How do I do this?
*Friday, October 4, 2013 at 12:29am*

**Math**

Julie has been offered two jobs. The 1st one pays $400 per week. The 2nd job pays $175 per week plus 15% commision of her sales. How much will she have to sell i n order for the 2nd job to pay as much as the first? how do you do this? i dont know the steps to.
*Thursday, October 3, 2013 at 7:44pm*

**math**

Doug has 170 stamps in his two-book collection. his first book of stamps has 30 more stamps in it than his second book. How mwny stamps are in each book?
*Thursday, October 3, 2013 at 7:21pm*

**Microeconomics**

which of the following situations describes an equilibrium? which does not? if the situation does not describe an eqilibrium, what would an eqilibrium look like? a. many people regularly commute from the suburbs to downtown Pleasantville. due to traffic congestion, the trip ...
*Thursday, October 3, 2013 at 6:57pm*

**psy331**

Locate a scholarly, peer-reviewed journal article in the Ashford University Library. This article must be an original research project published within the past five years. The study should illustrate one of the following conditioning principles: contingency, preparedness, or ...
*Thursday, October 3, 2013 at 5:04pm*

**Chemistry**

1. Which of the following is one way to prevent the corrosion of iron? A. Paint exposed iron parts with protective paint. B. Protect the iron from polluted air. C. Add carbon to the iron. D. Let the iron develop a natural coat of carbonate. 2. The source of the sun's heat ...
*Thursday, October 3, 2013 at 9:57am*

**Calculus**

Book works out integral of sqtr(a^2-x^2)dx as a^2/2*arcsin(x/a)+x/2*sqrt(a^2-x^2) by taking x=a sin theta, and advises to work it out using x=a cos theta. I did and got the first term as -a^2/2*arccos(x/a)and the same second term. This means arcsin x/a=-arccos x/a which can be...
*Thursday, October 3, 2013 at 5:07am*

**math**

prove, using the law of exponents, that the following is true (2^4)^3=(64)^2 (use the same bases to rewrite the expression) the second half of =(8)^2 (8)^2 =(4)^2 (2)^2 (4)^2 (2)^2 =(2)^2(2^2)(2^2)(2^2)(2^2)(2^2) now the first part (2^4)^3 2x2x2x2 2x2x2x2 2x2x2x2 so put both ...
*Wednesday, October 2, 2013 at 11:08pm*

**Physics**

Use the concepts of acceleration, force and yield strength to explain why delicate goods shipped in a cardboard box are often first packed in polystyrene foam.
*Wednesday, October 2, 2013 at 10:22pm*

**English**

Can anyone help me figure out what's wrong with this sentence? "The lighthouse is further away than it first appeared."
*Wednesday, October 2, 2013 at 8:37pm*

**Physics**

A dock worker applies a constant horizontal force of 80.0N to a block of ice on a smooth horizontal floor. The frictional force is negligible. The block starts from rest and moves 10.0m in the first 6.00s. What is the mass of the block of ice?
*Wednesday, October 2, 2013 at 7:27pm*

**Math**

Find three consecutive integers such that nine less than three times the third is seven more than the sum of the first and second.
*Wednesday, October 2, 2013 at 5:22pm*

**Idontgetit**

The value of the equilibrium constant (Kp) as represented by the first chemical equation is 2.00 x 10-2 at 730 K. Calculate the value of the equilibrium constant (Kp) for the second equation at the same temperature. Express answer in scientific notation. 2HI(g) = H2(g)+I2(g) ...
*Wednesday, October 2, 2013 at 3:43pm*

**math**

Given the set (1,2,3,4,5) how many 3-digit numbers can be formed if the first digit is 5 and no digit is repeated?
*Tuesday, October 1, 2013 at 8:22pm*

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