Homework Help: Health: First Aid

Recent Homework Questions About First Aid

math
If the digits of a number may be any one of 0 through 9 (except the first digit cannot be zero), and the system of alternating signs of coefficients is used to create a polynomial, what is the least number m of real zeros the polynomial can have? What is the greatest number M ...
Sunday, February 10, 2013 at 8:00am

MATH
What is the first derivative of L(x) = ((4+x^2)^0.5) + ((25 + (10-x)^2)^0.5)
Sunday, February 10, 2013 at 6:48am

please help quick! Calculus
solve 6x-2x^3 with first principal
Sunday, February 10, 2013 at 5:58am

stats
A clothing company employs 36 workers on first shift and 19 workers on second shift. Five workers are chosen at random to be interviewed about the work environment. Find the probability of choose: a) All first-shift workers b) all second-shift workers c) six first-shift ...
Sunday, February 10, 2013 at 3:27am

Trigonometry
Google this: 5.1 using fundamental identities Comcast Click and open the first result that appears on your search (Result= PDF Document). Textbook pages will appear and go to page 383 on problem #129. The directions will mention "Solve the right triangle shown in the ...
Sunday, February 10, 2013 at 2:12am

Math
Instructions Suppose we have a sequence (1), (2, 3), (4, 5, 6). (7, 8, 9, 10), (11, 12, 13, 14, 15), ... where (1) is the first element of the sequence, (2, 3) is the second, etc. What is the first number in the 100th element of the sequence? Be sure to do more than answer the...
Saturday, February 9, 2013 at 4:04pm

Spanish
This is a paragraph in which I am practicing the two uses of "se"--se pasiva and se impersonal. I did exercises with it first and now I am trying to see if I have them correct in "natural" writing. I would be very grateful to have it proofread! Thank you. ...
Saturday, February 9, 2013 at 1:38pm

English
make a poem on rain, first word of all lines verticaly MUSKAN Like: M................. U.................. S................... k.................... A.................... N...................
Saturday, February 9, 2013 at 12:36pm

Math
The sixth term of an arithmetic progression is 265 and the sum of the first 5 terms is 1445. Find the minimum value of n so that the sum of the first n terms is negative.
Saturday, February 9, 2013 at 12:28pm

English
1. The distance to the finish line seemed (endless). 2. I have ever ran so (fast). 3. Eli ran a surprisingly (fast) time in the trial. 4. He walked (confidently) to the starting blocks. 5. Is the high jump the first (field) event? 6. We looked (exhausted), but we felt great! ...
Friday, February 8, 2013 at 2:04am

math help please urgent
the difference of two numbers is 27. the first number is equal to one more than twice the value of the second number. find both numbers. please show work.
Friday, February 8, 2013 at 1:25am

ISLAMIC
I refer to the verse 22:78. “And make jihad in God’s cause with true jihad. It is He who has chosen you, and has laid no hardship on you in religion; the creed of your forefather Abraham. It is He who has named you Muslims, in bygone times and in this [book], so that...
Friday, February 8, 2013 at 12:58am

Mathematics
The 3rd and 8th term of an arithmetic progression A.P are -9 and 26.what their common difference nd first term?
Thursday, February 7, 2013 at 11:51pm

Language
1. The distance to the finish line seemed (endless). 2. I have ever ran so (fast). 3. Eli ran a surprisingly (fast) time in the trial. 4. He walked (confidently) to the starting blocks. 5. Is the high jump the first (field) event? 6. We looked (exhausted), but we felt great! ...
Thursday, February 7, 2013 at 11:16pm

Language
1. We arrived (late) for the track meet. 2. The locker room smelled (musty). 3. Will the first event begin (soon)? 4. The (anxious) participants filled the bleachers. 5. Can you line up (quickly)? 6. I can't believe I finished (first)! 7. Is the high jump the fist (field) ...
Thursday, February 7, 2013 at 10:45pm

Social Studies
26.The oil industry in Mexico is owned by the People or GOvernment Government 27.Many production companies have built facilities in Latin America because of Cheap labor or no taxes no taxes? 28.Who was the first president in 70 years that was not a member of the Institutional ...
Thursday, February 7, 2013 at 10:36pm

math
A locker combination has three nonzero digits, and digits cannot be repeated. The first two digits are 1 and 2. What is the probability that the third digit is 3?
Thursday, February 7, 2013 at 9:51pm

Probability
A nickel is flipped and a dime is flipped. 1. What is the probability of obtaining exactly one head? A bag contains five balls numbered 0 through 4. Two balls are chosen at random in succession. The first ball is replaced before the second is chosen. 1. What is the probability...
Thursday, February 7, 2013 at 8:26pm

Math
Tim was on an exercise program that required him to do one push up the first day and double the numberh e does each day How many push ups will he have to do on the eigth day 10 16 64 128 16?
Thursday, February 7, 2013 at 7:48pm

Math
A person invests $4500.oo into 2 different mutual funds. The first has a 4.5% interest rate the second 6%. He made a total of $225 in the investment. How much did he invest in each fund?
Thursday, February 7, 2013 at 6:24pm

Grammar
Combine each pair of sentences by changing one of them into an adverb clause. 1). Jerusalem is a great vacation destination. It is filled with interesting historical sites. 2). Traveling through the desert in Israel can be tiring for visitors. Temperatures often exceed 100 ...
Thursday, February 7, 2013 at 3:53pm

Psychology
Freud's techniques and assumptions are most evident in today's A) cognitive therapies. B) behavior therapies. C) biomedical therapies. D) psychodynamic therapies. 3. Just as Chinh began telling his therapist about a painful childhood experience, he complained of a ...
Thursday, February 7, 2013 at 3:52pm

Math
A nickel is flipped and a dime is flipped. 1. What is the probability of obtaining exactly one head? A bag contains five balls numbered 0 through 4. Two balls are chosen at random in succession. The first ball is replaced before the second is chosen. 1. What is the probability...
Thursday, February 7, 2013 at 3:38pm

Grammar
Change the second sentence in each of the following pairs into an adjective clause. Then, make the adjective clause part of the first sentence. You may have to add commas before and after some of the adjective clauses. 1). The West Bank is in the Judeo-Galilean Highlands. ...
Thursday, February 7, 2013 at 2:55pm

Movement and Music
Can you please check my semester exam before I turn it in? 1. Children who do poorly in school are primarily ______ learners. a. Auditory b. Kinesthetic c. Spatial d. visual My answer: c 2. A movement program that emphasized divergent problem solving, discovery, and self-...
Thursday, February 7, 2013 at 12:37pm

Education/Technology
In selecting software for the classroom, it is first necessary to ensure that A) the software features both text and colorful graphics. B) the software is at the correct grade level for your students. C) the software addresses diverse learning styles. D) the software is ...
Thursday, February 7, 2013 at 12:21pm

phsicsy
a liquid with density of 1.36*10^3 kg/m^3 through two horizontal sections of round tubing joined end to end. in first section, diameter of the tubing is 10cm and the flow speed is 230cm/s and the pressure is 1.3*10^5, the diameter is 6 cm a the cross sectional area in each ...
Thursday, February 7, 2013 at 12:13am

physics
An air-traffic controller observes two aircraft on his radar screen. The first is at altitude 800 m, horizontal distance 19.8 km, and 24.0° south of west. The second aircraft is at altitude 1000 m, horizontal distance 17.0 km, and 12.0° west of south. What is the ...
Thursday, February 7, 2013 at 12:13am

physics
A liquid (ρ = 1.65 g/cm^3) flows through two horizontal sections of tubing joined end to end. In the first section the cross-sectional area is 10.0 cm^2, the flow speed is 245 cm/s, and the pressure is 1.20 105 Pa. In the second section the cross-sectional area is 2.50 cm...
Wednesday, February 6, 2013 at 11:55pm

Chemistry
Okay this is embarrassing but I seem to have lost my ability to do the math.... If my problem is: 200.0mg/1* 1g /1000mg* 1 mol/206.31g= I can't remember if I have to multiply the two bottom ones first or if I just input the information in my calculator I got two answers 41...
Wednesday, February 6, 2013 at 10:41pm

Math
A copy machine makes 60 copies per minute. A second copy machine makes 80 copies per minute. The second machine starts making copies 2 minutes after the first machine starts. Both machines stop making copies 8 minutes after the first machine started. Together, the 2 machines ...
Wednesday, February 6, 2013 at 10:08pm

C code
Write a .c file named calc that: - Takes arguments from the command line - Solves a simple math problem - Returns the result as an exit status calc.c: //this is the function that gets called when the executable is run. int main(int argc, char * argv[]){ //I've given you ...
Wednesday, February 6, 2013 at 9:04pm

Physics
A runner covers one lap of a circular track 40.0 in diameter in 63.3 . For that lap, what was her average velocity? If she covered the first half-lap in 28.6 , what were her average velocity for that half-lap?
Wednesday, February 6, 2013 at 8:51pm

math
The greatest loss rate estimates are 4,200,000 gallons per day since the start of the spill, but after 44 days about 1,050,000 gallons were diverted into collection tankers.( The remaining amount was lost in the Gulf). Based on these data (assuming that the rate of loss was ...
Wednesday, February 6, 2013 at 5:34pm

physics
a 1.00 kg pendulum bob is released from a height of .200m. its speed at the bottom of its swing is 1.95m/s on the first pass. how much energy is lost due to friction during one complete swing?
Wednesday, February 6, 2013 at 5:27pm

Organic Chemistry
So im trying to make 1-acetylcyclohexane from ethenylcyclohexane..and i have to make it in 4 stepsi got the first two steps but the last two is what i am unsure of.. 1) Br2 2) 2 equiv NaNH2 3) ?? 4) ?? i know the 1st two steps but im having trouble figuring out the last two ...
Wednesday, February 6, 2013 at 4:42pm

Geometry and Measurement
Anna builds a rectangular prism storage container with dimensions of 8 inches by 6 inches by 12 inches. She builds a second container with a greater volume by increasing the dimensions of the rectangular prism to 16 inches by 12 inches by 24 inches. How will the volume of the ...
Wednesday, February 6, 2013 at 4:32pm

maths
pat spent 50% of his money in one shop and 25% of what was left in another shop.he had £12 left. what fraction of his money had he left and how much had he at first.
Wednesday, February 6, 2013 at 4:30pm

math
The federal government estimated that 2,000,000 gallons of oil were spilled per day for the first 44 days of the spill, until a " never before used at such depth" containment dome was installed. This dome or cap reduced the rate of spill to roughly 450,000 gallons ...
Wednesday, February 6, 2013 at 2:06pm

Math
The greatest loss rate estimates are 4,200,000 gallons per day since the start of the spill, but after 44 days about 1,050,000 gallons were diverted into collection tankers.( The remaining amount was lost in the Gulf). Based on these data (assuming that the rate of loss was ...
Wednesday, February 6, 2013 at 2:00pm

physics
Which of the following is true of inertia? a. It is described in Newton's first law of motion b. It is a property of motion c. It is measured by weight d. all of the above
Wednesday, February 6, 2013 at 11:25am

Calculus help!
A ball is shot into the air from a bridge, and its height, y, in feet, above the ground t seconds after it is thrown is given by y=f(t) = −16t2 + 55t + 33. What is the average velocity of the ball during the first second? Round your answer to two decimal places.
Wednesday, February 6, 2013 at 11:00am

Chemistry
4.00 mol of solid A was placed in a sealed 1.00-L container and allowed to decompose into gaseous B and C. The concentration of B steadily increased until it reached 1.20 M, where it remained constant. A(s) <-------> B(g)+C(g) Then, the container volume was doubled and ...
Tuesday, February 5, 2013 at 10:56pm

stats
Relatively speaking, which statistics exam did you do better on? On your first statistics exam you scored a 72 and on the second exam you scored an 89. Hey, you’re improving! Or are you? On the first exam, the class mean was 71 with a standard deviation of 15. On the ...
Tuesday, February 5, 2013 at 9:21pm

history
how did the navajo code-talkers aid marines in battle?
Tuesday, February 5, 2013 at 7:47pm

math
One plane flies straight east at an altitude of 31,000 feet. A second plane is flying west at an altitude of 13,000 feet on a course that lies directly below that of the first plane and directly above the straight road from Thomasville to Johnsburg. As the first plane passes ...
Tuesday, February 5, 2013 at 7:39pm

spelling
How do you find the vowel sounds in the first syllable? Do you have to do it by saying the word is that the only way?
Tuesday, February 5, 2013 at 7:31pm

Grammar
Use the infinitives below to write ten sentence. Label each use of the infinitive a noun, an adjective, or an adverb. 1). to sing 2). to drive 3). to give 4). to walk 5). to tell 6). to contribute 7). to act 8). to be 9). to sleep 10). to dream These are my answers to the ...
Tuesday, February 5, 2013 at 6:57pm

Molar heat of combustion question!
Calculate the molar heat of combustion of paraffin, expressed in units of kJ/mol. First calculate the thermal energy released when one mole of parafin burns) because one mole of parafin (c25h52) has a mass of 325g, the molar heat of combustion will be 352 times greater than ...
Tuesday, February 5, 2013 at 4:55pm

Finance
A U.S. firm wants to raise $15 million by selling 1 million shares at a net price of $15. We know that some say that firms "leave money on the table" because of the phenomonon of underpricing. Using the average amount of underpricing in U.S. IPOs, how many fewer ...
Tuesday, February 5, 2013 at 4:53pm

algebra
Generate the first five terms in the sequence using the explicit formula; Cn=12n-11 Please explain
Tuesday, February 5, 2013 at 4:35pm

Physics
A particle undergoes three displacements. The first has a magnitude of 15 m and makes an angle of 30 degrees with the positive x axis. The second has a magnitude of 8.6 m and makes an angle of 149 degrees with the positive x axis. After the third displacement the particle...
Tuesday, February 5, 2013 at 3:19pm

World history; Check:P
Write a opinion paper on the most significant consequences of the Agricultural Revolution. We have Neolithic Farmers to thank for early settlements, villages and then towns. They made all that happen by dint one one simple factor - food surplus. You don't get food surplus ...
Tuesday, February 5, 2013 at 3:00pm

History
1. Who first spoke of the “iron curtain”? A.) George Kennan *B.) Winston Churchill C.) Joseph Stalin D.) Harry Truman 2. One goal of the Marshall Plan was to A.) make Germany pay costs for all the destruction it had caused in Europe. *B.) send troops to help European...
Tuesday, February 5, 2013 at 12:09pm

statitstics
A warehouse employs 22 workers on first shift and 14 workers on second shift. Eight workers are chosen at random to be interviewed about the work environment. Find the Probability of choosing: A. All first-shift workers B. All second-shift workers C. Six first-shift workers D...
Tuesday, February 5, 2013 at 9:32am

College Algebra help!!!
I have to solve each equation using a u substitution and need help understanding how to do this. The first equation is: 1. x^2/3-2x^1/3-15=0 2. x+4=7 Squareroot x+4
Monday, February 4, 2013 at 7:44pm

AIG MATH
A fruit seller has an equal number of apples and oranges.He sold 109 oranges and 45 apples.The number of apples left is 5 times the number of oranges left.What is the total number of fruit he had at first?
Monday, February 4, 2013 at 7:29pm

Math
To get a B in physics, a student must score an average of 80 on four tests. First three scores were 68, 75 & 84. What is the lowest score the student can make on the last test and still get a B?
Monday, February 4, 2013 at 6:01pm

communication
Please HELP!! Question 1 of 20 5.0 Points Which of the following would be the LEAST appropriate in the closing paragraph of a negative message? A. "Let us know if model #A01 would be a suitable substitution." B. "Our layaway plan will enable you to purchase all ...
Monday, February 4, 2013 at 5:42pm

Statistics
A bag contains two blue, three purple, four yellow, two red, three green and one orange marbles.p> What is the conditional probability that, without replacement, the second marble is purple given that the first marble is green?
Monday, February 4, 2013 at 5:14pm

Spanish
Completa las siguientes oraciones con una palabra de la misma familia de la palabra subrayada. Usa la forma correcta de cada palabra. 1.) Cuando te (enfermas), te sientes (fill in blank) y necesitas ir al consultorio para ver a la (fill in blank). I have the answer to the ...
Monday, February 4, 2013 at 3:29pm

Chemistry
What is the activity coefficient of H^+ in a solution containing 0.073 M HCl and 0.0090 M Ca(ClO4)2? What is the pH of the solution? I believe I have to find the ionic strength of the solution first, but I don't know how to find it when 2 solutions are involved.
Monday, February 4, 2013 at 2:41pm

maths
Find five numbers in A.P. whose sum is 12.5 and the ratio of first to the last is 2 : 3.
Monday, February 4, 2013 at 11:11am

college mathematics
Three people are to be selected at random, each will be given one gift card. There is one card from Home Depot,one from Best Buy and one from Red Lobster. The first person selected will get to choose between the two remaining cards. The third person selected gets the third ...
Monday, February 4, 2013 at 10:30am

maths
A man borrows Rs 18000 at 5% per annum compound interest .If he repays Rs 6000 at the end of the first year and Rs 8000 at the end of the second year; how much should he pay at the end of the 3rd year in order to clear the account?
Monday, February 4, 2013 at 6:03am

math
On first day you receive 1 cent on the second day 2 cents on the third day you get 4 cents and so on for 28 days. How much would you expect to receive on the last day of the month ?
Sunday, February 3, 2013 at 10:13pm

algebra
Could someone check my work; 1. Generate the first five terms in the sequence using the explicit formula. yn = –5n – 5 –30, –25, –20, –15, –10 30, 25, 20, 15, 10 –10, –15, –20, –25, –30(my answer) 10, 15, 20, 25, 30 2...
Sunday, February 3, 2013 at 8:52pm

English
1. In the first period, I have a class. 2. At the first period, I have a class. 3. On the first period, I have a class. 4. In the first period, I have class. 5. At the first period, I have class. 6. On the first period, I have class. (Which ones are grammatical?)
Sunday, February 3, 2013 at 7:41pm

history
The nations of the world that were formerly victims of imperialism and did not align themselves with either the West or the Communist powers are today called what? A. first world countries B. second world countries C. underdeveloped nations D. developing nations
Sunday, February 3, 2013 at 6:18pm

Science Fair Project
Can you check for misspelling, punctuation and just to see if it's written correctly?... To sum up, my hypothesis was correct. I predicted that the plant that got the most sun would be the most colorful and the plants that were in the shade every day or even half of the ...
Sunday, February 3, 2013 at 4:45pm

Maths
1..The first 2 terms of a geometric progression are the same as the first two terms of an arithmetic progression.The first term is 12 and is greater than the second term.The sum of the first 3 terms od the arithmetic progression is 4/3 less than the sum of the first 3 terms of...
Sunday, February 3, 2013 at 4:35pm

Maths
Eric thinks of 2 sequences.One is geometric and the other arithmetic.Both sequences start with the number 3.The common ratio of the geometric sequence is the same as the common difference of the arithmetic sequence.If the 6-th term of the geometric sequence is 96.Find the ...
Sunday, February 3, 2013 at 4:27pm

Math
In a candy shop, the shopkeeper allows the exchange of 3 sweet rappers for 1 new sweet. John has 81 sweets at first. What is the largest possible number of sweets that john could have eaten? (with solution pls... tnx...)
Sunday, February 3, 2013 at 4:25pm

math
A fruit seller has an equal number of apples and oranges. He sold 109 oranges and 45 apples.The number of apples left is 5 times the number of oranges left. What is the total number of fruit he had first?
Sunday, February 3, 2013 at 4:11pm

PLEASE CHECK THESE ANSWERS AMERICAN GOV
1. The nerve center of the American Presidency is (C) the President’s Cabinet. the Executive Office of the President. the Congressional houses. the Civil Service. 2. Presidential elections include all of the following except (D) participatory caucuses. primary elections. ...
Sunday, February 3, 2013 at 3:01pm

CHEMISTRY URGENT!
assume that 13.5g of AL react with HCl according to the following equation, at STP: Al(s) + HCl(aq) ---> AlCl3 + H2(g) Remember to balance the equation first. a. how many moles of Al react? b. how mang moles of H2 are produced? c. how mang liters of H2 at STP are produced? ...
Sunday, February 3, 2013 at 2:02pm

Maths
An arithmetic and a geometric sequence have the same first terms.(2)....and the same second term say X..The sum of the first 3 terms of the arithmetic sequence equals to the third term of the geometric sequence.Calculate the first 3 terms of each sequences
Sunday, February 3, 2013 at 12:08pm

Maths and science
The sum of the first n terms of a sequence is given by 4-4(1/2)^n.calculate the first 3 terms
Sunday, February 3, 2013 at 12:05pm

calculus
A particle that moves along a straight line has velocity v(t)=(t^2)e^(-2t) meters per second after t seconds.? How many meters will it travel during the first "t" seconds?
Sunday, February 3, 2013 at 8:45am

Physics
In which of the following cases is the frequency of emitted radiation greatest? Electrons jump from third to second orbit Electrons jump from fourth to second orbit Electrons jump from first to second orbit Electrons jump from third to first orbit
Sunday, February 3, 2013 at 2:07am

Physics
A subway train starting from rest leaves a station with a constant acceleration. At the end of 5.59 s, it is moving at 11.5154 m/s. What is the train’s displacement in the first 4.15337 s of motion? Answer in units of m
Sunday, February 3, 2013 at 1:59am

Alegebra I
I need help please!!! On January 1, 2010, Chessville has a population of 50,000 people. Chessville then enters a period of population growth. Its population increases 7% each year. On the same day, Checkersville had a population of 70,000 people. Checkersville starts to ...
Sunday, February 3, 2013 at 12:29am

math
Three people are to be selected at random, each will be given one gift card. There is one card from Home Depot,one from Best Buy and one from Red Lobster. The first person selected will get to choose between the two remaining cards. The third person selected gets the third ...
Saturday, February 2, 2013 at 5:20pm

Calculus 2
I have this integral that I don't know how to solve: ∫ (x-3)/sqrt(x) Would I multiply both parentheses first? or just turn it into (x-3)(x^-0.5)?
Saturday, February 2, 2013 at 4:16pm

chem
The decomposition of sulfuryl chloride (SO2Cl2) is a first-order process. The rate constant for the decomposition at 660 K is 4.5 10-2 s-1. (a) If we begin with an initial SO2Cl2 pressure of 425 torr, what is the pressure of this substance after 74 s? what is the equation to ...
Saturday, February 2, 2013 at 3:46pm

History
The first European power to explore the coast of West Africa was A. England B. Portugal C. Holland D. France
Saturday, February 2, 2013 at 2:32pm

math
one elevator leaves first floor of a building at 9:00 a.m. It takes 5 seconds to travel between floors, stays 10 seconds at each floor and stops at each floor on its way to the top. Another elevator leaves the 12th (top) floor at 9:00 a.m. ; it takes 5 seconds to travel ...
Saturday, February 2, 2013 at 1:29pm

algebra 2
to solve the system of equations which expression could be substituted for x into the first equation? first: 2x+7y=10 second: x-2y=15
Saturday, February 2, 2013 at 9:15am

PHYSICS
A block with mass m1 = 9.0 kg is on an incline with an angle θ = 32.0° with respect to the horizontal. For the first question there is no friction, but for the rest of this problem the coefficients of friction are: μk = 0.28 and μs = 0.308. To keep the mass...
Saturday, February 2, 2013 at 4:10am

math
Three people are being selected at random, each will be given one gift card. There is one card from Home Depot,one from Best Buy and one from Red Lobster. The first person selected will get to choose between the two remaining cards. The third person selected gets the third ...
Friday, February 1, 2013 at 6:48pm

Algebra-help
Jordan decides to start a garden care service. He plans to charge $20 for the first hour and $10 for each additional hour that he spends working on a garden. He works 5 days a week and takes care of one different garden each day. How many hours will he need to work if he wants...
Friday, February 1, 2013 at 6:20pm

English Plz Help
1. What can you predict about the poem by previewing the title, subtitle, and first line of the poem “In Response to Executive Order 9066”? A. It will be a letter to the Japanese-American citizens in which they are told they must leave their homes. B. It will be a ...
Friday, February 1, 2013 at 4:53pm

Tree diagrams
Three people are being selected at random, each will be given one gift card. There is one card from Home Depot,one from Best Buy and one from Red Lobster. The first person selected will get to choose between the two remaining cards. The third person selected gets the third ...
Friday, February 1, 2013 at 1:48pm

edu
When a child is transitioning into your classroom, it is best for the child's first visit to take place: a.in the morning when the other children are arriving b.when other children in your class are on the playground c.during your circle time, so the child can meet all his...
Friday, February 1, 2013 at 10:55am

Math
Ann had $198 more than her sister. After their mother gave Ann $20 and her sister $60, Ann had twice as much money as her sister. How much money did Ann have at first.
Friday, February 1, 2013 at 10:52am

Chemistry
30g of the palm shell were mixed with 15ml H3PO4 and 100ml of distilled water in a 250ml conical flask.The concentration of H3PO4 solution was 2.2M, from question,how to prepare those from ortho phosporic acid (98g/mol).Do help me, is it need to make a stock solution first and...
Friday, February 1, 2013 at 10:26am

algebra
PLEASE help with the below. Solve the system of equations by first expressing it in matrix form as and then evaluating. a). 3x-2y=5 4x-y =-10 b). 3x -2y =-2 4x -y = 3
Friday, February 1, 2013 at 7:26am

PHYSICS
Because Earth's rotation is gradually slowing, the length of each day increases: The day at the end of 1.0 century is 1.0 ms longer than the day at the start of the century. In 93 centuries, what is the total (in hours) of the daily increases in time (that is, the sum of ...
Friday, February 1, 2013 at 2:32am

physics
The body of a 1258 kg car is supported on a frame by four springs. The spring constant of a single spring is 1.31 × 104 N/m. Four peo- ple riding in the car have a combined mass of 230 kg. When driven over a pothole in the road, the frame vibrates and for the first few ...
Thursday, January 31, 2013 at 11:06pm

Simple Math
A drawer contains 8 red socks, 4 white socks, and 2 blue socks. Without looking, you draw out a sock, return it, and draw out a second sock. What is the probability that the first sock is white and the second sock is blue?
Thursday, January 31, 2013 at 10:03pm

Algebra
The sum of two consecutive odd integers is 24. Which equation can be used to find the first integer n? F. n + 1=24 G. n + 2=24 H. 2n + 1=24 I. 2n + 2=24
Thursday, January 31, 2013 at 9:24pm

algebra
PLEASE help. Solve the system of equations by first expressing it in matrix form as and then evaluating. a). 3x-2y=5 4x-y =-10 b). 3x -2y =-2 4x -y = 3
Thursday, January 31, 2013 at 5:27pm

Chemistry
Calculate the half-life (in s) of a first-order reaction if the concentration of the reactant is 0.0655 M 18.4 s after the reaction starts and is 0.0173 M 41.2 s after the reaction starts. I got 25.6 Suppose the half-life is 23.7 s for a first order reaction and the reactant ...
Thursday, January 31, 2013 at 1:59pm

business
Late payment of medical claims can add to the cost of health care. An article (M. Freudenheim, “The Check Is Not in the Mail,” The New York Times, May 25, 2006, pp. C1, C6) reported that for one insurance company, 85.1% of the claims were paid in full when first ...
Thursday, January 31, 2013 at 1:59pm

algebra
Solve the system of equations by first expressing it in matrix form as and then evaluating. a). 3x-2y=5 4x-y =-10 b). 3x -2y =-2 4x -y = 3
Thursday, January 31, 2013 at 10:59am

algebra
Solve the system of equations by first writing it in matrix form and then using Gauss-Jordan elimination. x-4y =-5 -2x + 9y = 125
Thursday, January 31, 2013 at 10:59am

calculus
1) equation; sum= (1-(1+i)^-n / i 2) equation; sum= r(1+i)^-1 + r(1+i) ^-2 + r(1+i)^3 +...+ r(1+i)^-(n-1) + r(1+i)^-n im suppose to simplify second equation into the first one but im messing up somewhere if anyone can tell me the first 3-4 steps i think i can get it from there...
Thursday, January 31, 2013 at 10:21am

Government
What does a city seeking aid often have to do to be eligible for Federal Government grants and loans ? A. It must prove it is not in debt. B. It must provide a master plan for future growth. C. It must choose new city leadership. D. It must become a municipality. A and B sound...
Thursday, January 31, 2013 at 7:28am

Math
The sum of the speeds of two trains is 720.5 mph. If the speed of the first train is 3.5 mph faster than the second train, find the speeds of each. Please help? Thanks!
Wednesday, January 30, 2013 at 10:42pm

Finance
A Treasury note with a maturity of four years carries a nominal rate of interest of 10 percent. In contrast, an eight-year Treasury bond has a yield of 8 percent. A. If inflation is expected to average 7 percent over the first four years, what is the expected real rate of ...
Wednesday, January 30, 2013 at 5:34pm

English and Grammar
Primal fear is thriller, crime, mystery movie. The film is set in the courtroom and church the City of Chicago in the year 1990’s. The movie is directed by Gregory Hoblit and this was his first theatrical film released. The movie is an adaptation of William Diehl’s ...
Wednesday, January 30, 2013 at 1:23pm

English
Primal fear is thriller, crime, mystery movie. The film is set in the courtroom and church the City of Chicago in the year 1990’s. The movie is directed by Gregory Hoblit and this was his first theatrical film released. The movie is an adaptation of William Diehl’s ...
Wednesday, January 30, 2013 at 12:31pm

mechanics
a stone is dropped from a cliff 200m high.if a second stone is thrown verticall upwards 1.50seconds after the first was released.strike the cliff base at the same instant as the first stone.with what velocity was the second stone thrown
Wednesday, January 30, 2013 at 6:00am

Chemistry
Consider the reaction 5Br(aq) + BrO3(aq) + 6H^+(aq)-> 3Br2(aq) + 3 H2O(l? The average rate of consumption of Br- is 1.16×10-4 over the first two minutes. What is the average rate of formation of Br2 during the same time interval?
Wednesday, January 30, 2013 at 12:17am

Math
Account numbers for Northern Oil Company consist of seven digits. If the first digit cannot be a 0 or 1, how many account numbers are possible?
Tuesday, January 29, 2013 at 11:54pm

grammar
How do you combine these two sentences: The first atomic bomb was tested in 1945. It was exploded on the White Sands Proving Grounds.
Tuesday, January 29, 2013 at 11:44pm

Math
Can somebody help me solve this problem ? I am not so good with probability. - A bag contains 2 green marbles and 3 white marbles. One marble is drawn at random and not replaced. Then a second marble is drawn. What is the probability that the first marble is white and the ...
Tuesday, January 29, 2013 at 10:54pm

math
beginning june 1 lydia will take dance class every 8 days and guitar lessons every 12 days what is the first day lydia will have both dance class and a guitar lesson
Tuesday, January 29, 2013 at 9:45pm

Math 4th Grade
200 coins are sorted and kept 3 bags. The first bag has 20 more coins than the second bag. The second bag has twice as many coins as the third bag. How many coins are there in the third bag?
Tuesday, January 29, 2013 at 9:31pm

Math
200 coins are sorted and kept 3 bags. The first bag has 20 more coins than the second bag. The second bag has twice as many coins as the third bag. How many coins are there in the third bag?
Tuesday, January 29, 2013 at 8:48pm

Geometry
Given a quadrilateral having coordinates A(6,8), B(12,4), C(6,0) and D(4,0), first graph the quadrilateral on graph paper and connect the vertices. Shade in the quadrilateral and then reflect it across the x-axis. Do NOT shade in the resulting image. Now reflect this new image...
Tuesday, January 29, 2013 at 8:38pm

grammar
Give the pronoun that would replace the underlined nouns... In the first sentence it says Sheila's picture won first place in the art contest And it has Sheila an picture underlined .... And I know that Sheila would b replaced with age but what about picture?
Tuesday, January 29, 2013 at 7:29pm

math
461,592 x 308 _________ 3592736 + 13947760 ___________ 142,070,336 What is the first number that is incorrect in the work above? Please answer and explain.
Tuesday, January 29, 2013 at 6:07pm

Johnson
How do I record this transaction? Sold inventory on account for $500, cost of merchandise sold was $300. (Record the sale first and then the cost.)
Tuesday, January 29, 2013 at 4:51pm

Maths
A bouncy ball bounces 16m on its first bounce and then 8m on the second bounce. Each time it bounces the height halves. How high will the ball bounce on the 10th bounce?
Tuesday, January 29, 2013 at 1:25pm

math
Tom had some money. He spent $330 on books and 3/5 of the remainder on toys. After that, he had 1/4 as much money as he had first. How much money did Tom has left?
Tuesday, January 29, 2013 at 8:36am

maths
Find the derivative of 2x+3/ 3x-2 using first principle method.
Tuesday, January 29, 2013 at 7:32am

physics
A race car traveling northward on a straight, level track at a constant speed travels 0.750km in 20.0s. The return trip over the same track is made in 25.0s. What is the average velocity of the car in m/s for the first leg of the run? What is the average velocity for the total...
Tuesday, January 29, 2013 at 12:52am

us history
who developed the first fiscal plan?? was it hamilton and who was the author of the great compromise in constitution? was it madison
Monday, January 28, 2013 at 8:49pm

dress making
im pretty sure im right on most the question, just wanna make sure before i submit!! help Mrs. Shotto was once one of your regular customers, but she hasn't asked to have any garments made in approximately one year. You note she has lost weight. She would like you to make ...
Monday, January 28, 2013 at 6:50pm

English: "another evening at the club" Please help
1. Why is there no charity in Mithila? No one in the country is need of it. The poor can collect the cast-off jewelry for money. The wealthy are greedy and do not give to the poor. No one is wealthy enough to give to others. 2. Why does Sita feel ill after seeing Rama? She is ...
Monday, January 28, 2013 at 5:07pm

langauge arts
To the Top “Great works are performed, not by strength, but by perseverance.” -Samuel Johnson Have you ever wanted to give up on something before you even started? That’s how Raja felt as he squinted up at the looming mountain crowned in clouds. Then he looked ...
Monday, January 28, 2013 at 5:04pm

physics
A man in a maze makes 3 consecutive displacements. His first displacement is 5.40m westward, and the second is 18.0m northward. At the end of his displacement he is back to where he started. Use the graphical method to find the magnitude and direction of his third displacement.
Monday, January 28, 2013 at 3:44pm

Consumer Math
Can you please check my answers:) 1. John Gray bought a basic car for $8,250.00, with options that cost $324.00. There's a 6% sales tax in his state and a combined $50.00 license and registration fee. What was John's total cost? A. $9,138.44 B. $10,000.00 C. $9,141.44 ...
Monday, January 28, 2013 at 3:43pm

Math
Can you please check my answers:) 1. John Gray bought a basic car for $8,250.00, with options that cost $324.00. There's a 6% sales tax in his state and a combined $50.00 license and registration fee. What was John's total cost? A. $9,138.44 B. $10,000.00 C. $9,141.44 ...
Monday, January 28, 2013 at 1:29pm

Biology
In a lab experiment, we experimented with 1% glucose solution and Sorenson's solution to determine pH levels and whatnot; the other part of the lab was to determine which one, if either, was a buffering solution. According to the notes my instructor gave us, a buffers are ...
Monday, January 28, 2013 at 1:10pm

Engineering Math
A Theme Park site is being designed. It will occupy a rectangular piece of land 800m by 600m. There are to be 4 particularly noisy rides. The ‘Drumbeat’ uses music which reaches a level of 95dB(A). The ‘Bigdrop’ generates screams which can reach 98dB(A). ...
Monday, January 28, 2013 at 10:05am

Calculus/Algebra
Let the demand and supply functions be represented by p=D(q) and p=S(q), respectively, where p is the price per item in dollars and q is the quantity of items. D(q) = 42-.03q S(q) = .02q -20 Find the equilibrium price. Hint: you will first find the equilibrium quantity (q) and...
Monday, January 28, 2013 at 8:21am

phy
A passenger in a moving car and a passerby standing at the road side see each other as moving in the opposite direction. Which of the following is NOT true? The passenger is in motion relative to the passer-by The passer-by is stationary relative to the passenger Both ...
Monday, January 28, 2013 at 3:33am

phy
1 An object is thrown upward from the edge of a tall building with a velocity of 10 m/s. Where will the object be 3 s after it is thrown? Take g=10ms−2 15 m above the top of the building 30 m below the top of the building 15 m below the top of the building 30 m above the...
Monday, January 28, 2013 at 3:32am

Physics
a 60 kg boy on a sled reaches the bottom of a hill traveling at 8 m/s, if he comes to a stop at 20 m along this flat stretch of snow what is the coefficient of kinetic friction between the sled and the ground? (hint: find the acceleration first)
Sunday, January 27, 2013 at 9:59pm

Math
Please check my answers. 1. John Gray bought a basic car for $8,250.00, with options that cost $324.00. There's a 6% sales tax in his state and a combined $50.00 license and registration fee. What was John's total cost? A. $9,138.44 B. $10,000.00 C. $9,141.44 D. $14,...
Sunday, January 27, 2013 at 9:44pm

Math
Show that each sequence is geometric. Find the common ratio and write out the first four terms. (Can you explain how to do it too?) > {(5/2)^n) > {(3n/9)} > {3^2n}
Sunday, January 27, 2013 at 9:39pm

World History
Please read Chapter 2 in the textbook The First Complex Societies in the Eastern Mediterranean, ca. 4000-550 B.C.E. (pp. 22-43) and answer the following questions: 1. The Hittites were considered to have military superiority at the time, and they were a major challenge to ...
Sunday, January 27, 2013 at 7:47pm

math
First year profits of a business were $900 . Second year profits were $1200 . What percent of the first year profits were the second year profits.
Sunday, January 27, 2013 at 7:14pm

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