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October 25, 2014

Homework Help: Health: First Aid

Recent Homework Questions About First Aid

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Social Studies
Briefly describe one way that these cultures changed the geography of the paces to which they migrated. 1. the ancient Romans who conquered much of Europe and England 2. homesteading families who migrated to the western territories of North America 3. American missionaries ...
Sunday, May 11, 2014 at 1:37pm

physics
A car moves along an x axis through a distance of 900 m, starting at rest (at x = 0) and ending at rest (at x = 900 m). Through the first ¼ of that distance, its acceleration is +2.25 m/s2 . Through the rest of that distance, its acceleration is – 0.750 m/s2 . Find...
Sunday, May 11, 2014 at 12:49pm

chemistry, first year university
Solid NH4N3 decomposes explosively according to the following equation: NH4N3(s) ⇌ 2N2(g) + 2H2(g) A small amount of ammonium azide was placed in a sealed container and the air was removed. The sample was then detonated. At equilibrium the total pressure in the container...
Sunday, May 11, 2014 at 8:49am

Algebra
Find the first and third quartiles of the data set. 1, 5, 1, 2.5, 3, 2, 3.5, 2, 3, 1.5, 4, 2, 4, 1, 3, 4.5
Sunday, May 11, 2014 at 1:40am

chemistry
Why is it recommended to carry out iodometric titration as quickly as positive and to get the first end point?
Sunday, May 11, 2014 at 1:10am

Algebra 2
Select the first five terms in the arithmetic sequence an=8n, starting with n=1
Saturday, May 10, 2014 at 11:02am

MATHHH
A paper bag contains a mixture of three types of treats: 12 granola bars, 10 fruit bars, and 8 cheese strips. Suppose that you play a game in which a treat is randomly taken from the bag and replaced, and then a second treat is drawn from the bag. You are allowed to keep the ...
Saturday, May 10, 2014 at 3:52am

math
Marley drives to work every day and passes two independently operated traffic lights. The probability that both lights are red is 0.35. The probability that the first light is red is 0.48. What is the probability that the second light is red, given that the first light is red?
Friday, May 9, 2014 at 8:42pm

Math
For the first of two basketball games the price of each reserved seat was $1.50,the price of each unreserved seat was 5 cents, and the number of reserved seats sold was 1/25 of the number of unreserved seats sold.If, at a second game, the price of the reserved seats is to be ...
Friday, May 9, 2014 at 7:38pm

History PLEASE HELP!!!
1.   Which is a key factor that affects the climate of mountainous Latin America?  (2 points) • snow • El Niño • elevation • sea breezes 2.   Which statement best describes the economies of Central America?  (2 ...
Friday, May 9, 2014 at 4:19pm

math
Suppose that you are taking a course that has three exams which count for three-fifths of your grade and a final which counts for two-fifths of your grade. On your first three tests your scores on were 84, 72, and 96. To get an B in the course, you must have an average of at ...
Friday, May 9, 2014 at 9:07am

math
Telephone company A charges $3.00 for the first minute of any long distance call and $0.50 for each additional minute. Telephone company B charges $2.00 for the first minute of any long distance call and $0.70 for each additional minute. If the cost of a call lasting x minutes...
Thursday, May 8, 2014 at 10:37pm

Calculus
Which of the following is a separable, first-order differential equation? A) dy/dx= x+y/2x B) dy/dx=x+y/x-y C) dy/dx=sinx << D) dy/dx=xy/x+y E) dy/dx= 2lnxy 2) The differential equation dy/dx=y/x^2 has a solution given by: A) y=C sqrt(x^2+4) B)y=C e^-1/x C)-1/2ex^2+C D) ...
Thursday, May 8, 2014 at 9:20pm

Math
3. What are the next three terms of the sequence 6, 12, 18, 24 a; 28, 34, 40 b; 30, ,34, 38 c; 30, 36, 44 d; 30, 36, 42 --------------------------- 14. The sale price of ground beef at a local grocery store is $1.49 for the first pond and $1.09 for each additional pound. Which...
Thursday, May 8, 2014 at 9:04pm

Math - Pleeeease
Two planes take off at a ny airport. The first plane climbs at an angle of 45 degrees with respect to the ground and reaches an altitude of 5600 feet. The second plane climbs at an angle of 60 degress with respect to the ground and reaches an altitude of 8200 feet. To the ...
Thursday, May 8, 2014 at 8:37pm

Math
1-)A passenger boat which travels 6 mph faster than a freighter required 3 days less time to make a trip of 2592 miles. Find the rate of the passenger boat. 2-)For the first of two basketball games the price of each reserved seat was $1.50,the price of each unreserved seat was...
Thursday, May 8, 2014 at 8:24pm

Math
36. A clock gains 20 minutes each day. if the correct time is indicated now , in how many days will it again show the first correct time? Please show work/explain A.8 B.18 C.20 D.36 E.72
Thursday, May 8, 2014 at 5:02pm

math
Andre picks a card at random. Without putting the first card back, he picks a second card at random. What is the probability that both cards will be hearts. The cards showing are three hearts and two diamonds
Thursday, May 8, 2014 at 3:48pm

Social Studies
Which of the following was likely motivation for why colonists were even sent to Australia in the first place? A. to have people from the royal family go and colonize Australia. B. to send explorers who wanted to go because of monetary incentives. C. to send convicts to an ...
Thursday, May 8, 2014 at 2:00pm

Physics question help/ check my answers
The middle two question please check my answers and tell me if I am correct or if there is something I am missing. The first and the last question I need help to understand and complete it. Thank you in advance!!! 1. What is the electric force between a +2 µC point ...
Thursday, May 8, 2014 at 12:27pm

Chemistry
Why is the first ionisation energy of chlorine greater than the first ionisation energy of Lithium ?
Thursday, May 8, 2014 at 3:22am

Math 12
One hundred tickets are sold for a raffle. Three prizes are awarded. What is the probability that Andy wins first prize, Brianna wins second, and Cam wins third? What is the probability that Andy, Brianna, and Cam are the three winners (not necessarily in that order)?
Wednesday, May 7, 2014 at 9:12pm

Math
The teacher gave this pattern to the class: the first term is 5 and the rule is add 4, subtract 1. Each student says one number. The first student says 5. Victor is tenth in line. What number should Victor say?
Wednesday, May 7, 2014 at 6:48pm

MATH PLEASE HELP MRS.SUE!
What are the next three terms in the sequence? –1, 9, 19, 29, … (1 point) 38, 37, 32 40, 51, 62 39, 49, 59 38, 47, 56 2. Geoff planted dahlias in his garden. Dahlias have bulbs that divide and reproduce underground. In the first year, Geoff’s garden produced 6 ...
Wednesday, May 7, 2014 at 5:40pm

math
Food Express is running a special promotion in which customers can win a free gallon of milk with their food purchase if there is a star on their receipt. So far, 129 of the first 138 customers have not received a star on their receipts. What is the experimental probability of...
Wednesday, May 7, 2014 at 4:58pm

MATH
Please help me solve this problem. My grandfather has a big collection of silver dollars and 50 cents pieces. He promised to give one fourth of his collection to the first of his grandchildren, who can figure out the total value of his coins. The only clues he will give are ...
Wednesday, May 7, 2014 at 2:04pm

chemistry
Two solutions were prepared. The first was a 0.672 M solution of aluminum hydroxide and the second was a 0.405 M sulfuric acid solution. 1.) If a total of 500 mL of aluminum hydroxide solution was prepared, how many grams of the solute (AL(OH)3) would have been weighed out in ...
Wednesday, May 7, 2014 at 11:14am

Algebra
Write the other number or expression in terms of the given variable. A 3 foot board is cut into two pieces. If one piece measures x write the expression for the length of the other piece. Ok now I know the first term is 2x correct? where do I go from here?
Wednesday, May 7, 2014 at 6:44am

Language Check 2 Ms.Sue
Correct capitalization, punctuation, and spelling. 1. We keep a variety of emergency equipment in the trunk of our car, a first-aid kit, jumper cables, a blanket, a flashlight, and road flares. A. car a first-aid B. car: a first-aid C. car; a first-aid D. car: a 1st-aid E. ...
Wednesday, May 7, 2014 at 1:19am

social studies PLEASE CHECK
1. which is an event of the progressive era enacted by the local government in South Carolina? a. the first grange chapter was established for farmers b. the grandfather clause gave poor whites the right to vote c. blacks were disfranchises through a poll tax d. a law ...
Tuesday, May 6, 2014 at 8:59pm

social studies
The British attempted two invasions of America from the sea. The first one was at ? (Baltimore) and the second one at ?(New York) 2. After capturing Washington, the British attacked what city, which they failed to capture? Answer: New York, Statton Island 3. On November 7, ...
Tuesday, May 6, 2014 at 7:53pm

social studies
The British attempted two invasions of America from the sea. The first one was at ? (Baltimore) and the second one at ?(New York) 2. After capturing Washington, the British attacked what city, which they failed to capture? Answer: New York, Statton Island 3. On November 7, ...
Tuesday, May 6, 2014 at 6:02pm

social studies
The British attempted two invasions of America from the sea. The first one was at ? (Baltimore) and the second one at ?(New York) 2. After capturing Washington, the British attacked what city, which they failed to capture? Answer: New York, Statton Island 3. On November 7, ...
Tuesday, May 6, 2014 at 5:14pm

social studies
The British attempted two invasions of America from the sea. The first one was at ? (Baltimore) and the second one at ?(New York) 2. After capturing Washington, the British attacked what city, which they failed to capture? Answer: New York, Statton Island 3. On November 7, ...
Tuesday, May 6, 2014 at 4:57pm

programming
Consider the following situation - checkout line in a counter. The details are shown as below: i. One check-out line ii. The serving time for every customer is one minute but they may have to wait in line before being served iii. The customers between zero and five will join ...
Tuesday, May 6, 2014 at 11:57am

programming
Suppose that you can select the pivot of the quick sort algorithm with three methods: you can select the first item, last item, or middle item as the pivot. Indicate the method(s) that gives the most efficient result to sort the following arrays. Note that you MUST indicate ...
Tuesday, May 6, 2014 at 11:56am

Management
A firm is assigned the network part 132.99. It selects an 11-bit subnet part. (20 pts) a) Draw the bits for the four octets of the IP address of the first host on the first subnet. b) Convert this answer into dotted decimal notation. c) Draw the bits for the second host on the...
Tuesday, May 6, 2014 at 9:03am

Precalculus
1. In an arithmetic sequence, the fifth term, u5, is greater than the first term, u1. The difference between these terms is 36. a) find the common difference 9? The tenth term of the sequence is double the seventh term . b) find u1 2.5? 2. Consider the function f(x) = ax^3 -3x...
Monday, May 5, 2014 at 10:40pm

English
The only acceptable way to divide words at the end of a line is: A. to let the computer decide. B. before the last three letters. C. between syllables. D. after the first three letters. C
Monday, May 5, 2014 at 9:26pm

English (Writeacher)
Do you think I should revise the first sentence? Also, am I using the dash properly? "Driven by sea storms, Odysseus and his men wind up upon the land of the Lotus Eaters, and three of the men are sent to retrieve information about the inhabitants of the peculiar island. ...
Monday, May 5, 2014 at 8:51pm

Algebra
In 2005, Lee invested $2000 in a fund that pays 5% interest for the first 10 years, and 8% interest for every year thereafter. What will be the value of her investment in the year 2020?
Monday, May 5, 2014 at 5:49pm

Fianance
Jake is looking at refinancing his mortgages and paying off his credit cards at the same time. Currently, his debt situation is as follows: First mortgage: 6%, 30 years due 20xx (15 years left) $269,238 Second mortgage: 8%, interest only due in 15 years $80,000 Credit cards: ...
Monday, May 5, 2014 at 4:30pm

Social Studies
Explain why you think Matthew Lyon is an important figure in American History and why he should be included in the Register. Would it be that no other American has illustrated more thoroughly than Matthew Lyon the excellence of democratic institutions in affording to every man...
Monday, May 5, 2014 at 4:08pm

Physics
Two pulleys are connected by a belt that causes one pulley to rotate (via friction) as it is driven by the first pulley. The belt turns around the pulleys without slipping on either one. rA is 10.0 cm and rB is 25.0 cm. If wheel A starts from rest and increases its rate of ...
Monday, May 5, 2014 at 3:53pm

Social Studies
Explain why you think Matthew Lyon is an important figure in American History and why he should be included in the Register. Would it be for him being the first person to be put on trial under the Sedition Act? He opposed going to war against France and objected the land tax ...
Monday, May 5, 2014 at 3:20pm

English
Back from Extinction In 2004, two biologists were canoeing in a remote part of Arkansas. They were searching for a bird that local people said was there. As the men floated along, they listened for a bird call neither had ever heard before. Then a crow-sized woodpecker flew ...
Monday, May 5, 2014 at 2:44pm

English
Back from Extinction In 2004, two biologists were canoeing in a remote part of Arkansas. They were searching for a bird that local people said was there. As the men floated along, they listened for a bird call neither had ever heard before. Then a crow-sized woodpecker flew ...
Monday, May 5, 2014 at 1:35pm

math
As compared to its first year of operation, ABC Company grew 8% in the second year and an additional 2% per year for the next two years. If total growth for years 2-4 was $45,000 over the first year’s sales of $150,000, how much did ABC Company grow in year 2?
Monday, May 5, 2014 at 10:50am

probability
two cards are drawn in succession without replacement from a standard deck of 52 cards. what is the probability that the first card is a spade given that the second card is a club. what is the probability that the first card is a face card(jack, queen, king) given that the ...
Sunday, May 4, 2014 at 11:13pm

CHEMISTRY
The enthalpy of solution of nitrous oxide (N2O) in water is -12 kJ/mol and its solubility at 20 oC and 1.00 atm is 0.121 g per 100. g of water. Calculate the molal solubility of nitrous oxide in water at 1.600 atm and 20 oC. Hint, first find Henry's law constant at 20 oC ...
Sunday, May 4, 2014 at 9:43pm

statistics
A researcher was interested in assessing the effectiveness of the Statistics Diet as compared to a regular low calorie diet on weight loss. In the study, obese participants were randomly assigned to one of two groups: (1) the Statistics Diet, which required participants to ...
Sunday, May 4, 2014 at 3:43pm

math check probability
5. A bag contains 7 green marbles and 4 white marbles. You select a marble at random. What are the odds in favor of picking a green marble? A. 7:11**? B. 7:4 C. 4:7 D. 3:7 ------------------------------------ 6. Food Express is running a special promotion in which customers ...
Sunday, May 4, 2014 at 2:43pm

CHEMISTRY
The enthalpy of solution of nitrous oxide (N2O) in water is -12 kJ/mol and its solubility at 20 oC and 1.00 atm is 0.121 g per 100. g of water. Calculate the molal solubility of nitrous oxide in water at 1.600 atm and 20 oC. Hint, first find Henry's law constant at 20 oC ...
Sunday, May 4, 2014 at 12:12am

statistics
A researcher was interested in assessing the effectiveness of the Statistics Diet as compared to a regular low calorie diet on weight loss. In the study, obese participants were randomly assigned to one of two groups: (1) the Statistics Diet, which required participants to ...
Saturday, May 3, 2014 at 9:45pm

chemistry
The enthalpy of solution of nitrous oxide (N2O) in water is -12 kJ/mol and its solubility at 20 oC and 1.00 atm is 0.121 g per 100. g of water. Calculate the molal solubility of nitrous oxide in water at 1.600 atm and 20 oC. Hint, first find Henry's law constant at 20 oC ...
Saturday, May 3, 2014 at 8:51pm

math
Econocar offers two plans for one-week rentals of a compact car. A rate of $295 per week includes the first 1000 km. Extra distance costs 15 cents per kilometre. A weekly rate of $389 allows unlimited driving. Rounded to the nearest kilometre, beyond what driving distance is ...
Saturday, May 3, 2014 at 7:53pm

Math
A patio was to be laid in a design with one tile in the first row,two tiles in the second row,three tiles in the third row, and so on. Mr Tong had 60 tiles to use. How tiles should be placed in the bottom row to use the most tiles?
Saturday, May 3, 2014 at 7:23pm

Algebra
Bob drove 120 miles on his vacation. He drove an average of 1.2 times faster on the 2nd 60 miles of his trip than he did on the first half of the trip. Which expression represents the time he spend driving? Let x=his speed on the first half of the trip. • 110/x • 120...
Saturday, May 3, 2014 at 5:45pm

statistics
A researcher was interested in assessing the effectiveness of the Statistics Diet as compared to a regular low calorie diet on weight loss. In the study, obese participants were randomly assigned to one of two groups: (1) the Statistics Diet, which required participants to ...
Saturday, May 3, 2014 at 1:56pm

statistics
A researcher was interested in assessing the effectiveness of the Statistics Diet as compared to a regular low calorie diet on weight loss. In the study, obese participants were randomly assigned to one of two groups: (1) the Statistics Diet, which required participants to ...
Saturday, May 3, 2014 at 12:41pm

math
how can i plot values in a parabola graph if the values are fractions. it's my first time with this things so i don't understand
Saturday, May 3, 2014 at 10:49am

physics
Two inelastic balls of masses 2 and 3 kg are moving at the velocities 8 and 4 m/s. Find the increase of the internal energy if the first ball catches up the second one.
Saturday, May 3, 2014 at 7:39am

business
Within an organization, the first step in human resources planning is?
Saturday, May 3, 2014 at 12:04am

statistics
A researcher was interested in assessing the effectiveness of the Statistics Diet as compared to a regular low calorie diet on weight loss. In the study, obese participants were randomly assigned to one of two groups: (1) the Statistics Diet, which required participants to ...
Friday, May 2, 2014 at 7:09pm

statistics
A researcher was interested in assessing the effectiveness of the Statistics Diet as compared to a regular low calorie diet on weight loss. In the study, obese participants were randomly assigned to one of two groups: (1) the Statistics Diet, which required participants to ...
Friday, May 2, 2014 at 6:21pm

Fitness And Nurition
Greetings! I did my homework, but I don't know if my answers are right or not. I wanted to know if you can help. My answers will be with a * beside it. 1. Which one of the following choices is a mental symptom of distress? A. Memory loss B. High self-esteem C. ...
Friday, May 2, 2014 at 5:54pm

chemistry
Construct a galvanic (voltaic) cell from the half reactions shown below. Au3+ + 3 e- → Au (s) ξo= 1.420 V Br2 (l) + 2 e-→ 2 Br- (aq) ξo= 1.087 V Calculate the equilibrium constant (K) for this cell. Assume that the temperature is 298K. First, consider ...
Friday, May 2, 2014 at 4:46pm

math 1 question pls help asap!!!
Find the first four terms of the sequence represented by the expression. 3n + 5 (1 point) 5, 8, 11, 14 8, 11, 14, 17*** 3, 6, 9, 12 0, 8, 11, 14
Friday, May 2, 2014 at 4:12pm

math
Determine whether each sequence is arithmetic or geometric. Find the next three terms. 1. 14, 19, 24, 29, . . . (1 point) geometric, 34, 39, 44 arithmetic, 32, 36, 41 arithmetic, 34, 39, 44 *** The sequence is neither geometric nor arithmetic. 2. –4, 8, –16, 32...
Friday, May 2, 2014 at 3:36pm

math 1 question pls help!!!
6. Food Express is running a special promotion in which customers can win a free gallon of milk with their food purchase if there is a star on their receipt. So far, 129 of the first 138 customers have not received a star on their receipts. What is the experimental probability...
Friday, May 2, 2014 at 2:16pm

History
The First Amendment right to freedom of religion was central in deciding the outcome to what trials?
Friday, May 2, 2014 at 11:34am

Physics/Calculus
It takes a force of 21,714lb to compress a coil spring assembly on a New York City Transit Authority subway car from its height of 8in to its fully compressed height of 5in. A. What is the assemblys force constant? B. How much work does it take to compress the assembly the ...
Friday, May 2, 2014 at 9:43am

Calculus
An electric elevator cable with a motor at the top has a multistrand cable weighing 4.5lb/ft. When the car is at the first floor, 180ft of cable are pulled out, and effectively 0ft are out when the car is at the top floor. How much work does the motor do just lifting the cable...
Friday, May 2, 2014 at 9:41am

College Algebra & Trigonometry
A weight is attached to an elastic spring that is suspended from a ceiling. If the weight is pulled 1 inch below its rest position and released its displacement in inches after t seconds is given by x(t)=2cos(5ðt+ð/3). Find the first two times for which the ...
Friday, May 2, 2014 at 4:03am

History8
In Westside Community Schools v. Mergens, the Supreme Court ruled in favor of the __________, stating that it was a violation of __________. A.principal . . . church and state B.students . . . their First Amendment rights C.students . . . their patriotic rights D.principal...
Thursday, May 1, 2014 at 6:11pm

Asap science check my answer plz?!
Fill in the Blank: 14. The energy role of the first organism in a food chain is always a(n) ___________. A: Producer 15. Water is a(n) __________ factor in all ecosystems that all living things require. A: Abiotic 16. ___________bacteria carry out the conversion of gaseous ...
Thursday, May 1, 2014 at 5:46pm

Survey Math help
A movie complex has eight different movie theaters. The manager of the complex wants to conduct a survey to determine which snacks to add to the menu. Which represents the best sample the manager could use for the survey? Would I do specific ages the first 100 randomly picked ...
Thursday, May 1, 2014 at 2:44pm

math (2)
Find the first partial derivatives of the function. f(x,y,z) = xe^(y/z) a. fx = ? b. fy = ? c. fz = ?
Thursday, May 1, 2014 at 11:44am

Help Ms.Sue!!! Social Studies
1. How does the Israeli-Palestinian conflict most directly affect the daily lives of young people in Jerusalem a. civilian violence b. peace talks c. international negotiations d. political parties ( my answer) 2. which is the best location for farming? a. east of the jordan ...
Thursday, May 1, 2014 at 10:56am

College Algebra and Trigonometry
A weight is attached to an elastic spring that is suspended from a ceiling. If the weight s pulled 1 inch below its rest position and released its displacement in inches after t seconds is given by x(t)=(5pt+p/3. Find the first two times for which the displacement s 1.5 inches...
Wednesday, April 30, 2014 at 11:40pm

accounting
Meranda Corporation purchases a machine for $125,000. It has an estimated salvage value of $10,000 an is expected to produce 50,000 units in its lifetime. During the first year of operation, it produced 14,500 units. To the nearest dollar, the depreciation for the first year ...
Wednesday, April 30, 2014 at 11:06pm

statistics
A researcher was interested in assessing the effectiveness of the Statistics Diet as compared to a regular low calorie diet on weight loss. In the study, obese participants were randomly assigned to one of two groups: (1) the Statistics Diet, which required participants to ...
Wednesday, April 30, 2014 at 9:20pm

math (3)
Evaluate the first partial derivatives of the function at the given point.(0,e) f(x,y) = 6e^x ln(y) fx(0,e) = ? fy(0,e) = ?
Wednesday, April 30, 2014 at 8:29pm

math (2)
Find the first partial derivatives of the function. f(x,y,z) = xe^(y/z) a. fx = ? b. fy = ? c. fz = ?
Wednesday, April 30, 2014 at 8:24pm

Constituion: Check? Thanks
After 1788, states had no control over a.local government and education. b.the chartering of corporations. c.the development and administration of civil and criminal law. d.issuing legal currency. c? In Congress’s first session after the ratification of the Constitution, ...
Wednesday, April 30, 2014 at 6:34pm

Probability
For hair color, Brown (B) is a dominant trait and Blond (b) is a recessive trait. If one parent has pure blond hair and one parent has hybrid brown hair, complete the Punnett square and questions that follow. a) What is the probability that their first child will have pure ...
Wednesday, April 30, 2014 at 5:12pm

Algebra 1/2
The spinner is spun twice. What is the probability it will stop on either 3 or 5 the first time and will stop on 2 the second time?
Wednesday, April 30, 2014 at 4:50pm

statistics
For hair color, Brown (B) is a dominant trait and Blond (b) is a recessive trait. If one parent has pure blond hair and one parent has hybrid brown hair, complete the Punnett square and questions that follow. a) What is the probability that their first child will have pure ...
Wednesday, April 30, 2014 at 3:51pm

Probabitilty
For hair color, Brown (B) is a dominant trait and Blond (b) is a recessive trait. If one parent has pure blond hair and one parent has hybrid brown hair, complete the Punnett square and questions that follow. a) What is the probability that their first child will have pure ...
Wednesday, April 30, 2014 at 2:59pm

Chemistry
Balance the redox equation. It occurs in acid solution. Sn(s) + H+(aq) = Sn2+(aq) + H2(g) I understand that first the equation needs to be put into halves. Sn(s) = Sn2+(aq) and H+(aq) = H2(g) Then, Sn(s) = Sn2+(aq) + 2e- and ? From here I am lost. Please help.
Wednesday, April 30, 2014 at 2:54pm

Probability
Suppose that you have two laptops, both of which you begin using at time 0. Each laptop will eventually fail, and we model each one's lifetime as exponentially distributed with the same parameter λ. The lifetimes of the two laptops are independent. One of the laptops ...
Wednesday, April 30, 2014 at 4:20am

Probability
Fred is giving away samples of dog food. He makes visits door to door, but he gives a sample away (one can of dog food) only on those visits for which the door is answered and a dog is in residence. On any visit, the probability of the door being answered is 3/4, and the ...
Wednesday, April 30, 2014 at 4:19am

College Algebra and Trigonometry
A weight is attached to an elastic spring that is suspended from a ceiling. If the weight s pulled 1 inch below its rest position and released its displacement in inches after t seconds is given by x(t)=(5pt+p/3. Find the first two times for which the displacement s 1.5 inches.
Wednesday, April 30, 2014 at 4:13am

*math (7)
Evaluate the first partial derivatives of the function at the given point. f(x, y) = x^2 + xy + y^2 + 2x - y ; at (-5, 4) fx(-5, 4) = ? fy(-5, 4) = ?
Tuesday, April 29, 2014 at 11:52pm

Math
There are 3,000 people at a concert. You survey a random sample of 200 people and find that for 35 of them this is the first concert they have ever attended. Estimate how many people are attending their first concert that night.
Tuesday, April 29, 2014 at 11:16pm

Astronomy
Choose one answer for each question How old is the universe? 6,000 years old 380,000 years old 13.8 billion years old 13.8 million years old A parsec is: Longer than a light year The distance between the Earth and the Sun Approximately 3x10^24 cm None of the above The distance...
Tuesday, April 29, 2014 at 7:57pm

Probability
Fred is giving away samples of dog food. He makes visits door to door, but he gives a sample away (one can of dog food) only on those visits for which the door is answered and a dog is in residence. On any visit, the probability of the door being answered is 3/4 , and the ...
Tuesday, April 29, 2014 at 7:27pm

probability
Suppose that you have two laptops, both of which you begin using at time 0. Each laptop will eventually fail, and we model each one's lifetime as exponentially distributed with the same parameter λ. The lifetimes of the two laptops are independent. One of the laptops ...
Tuesday, April 29, 2014 at 5:52pm

probability
Fred is giving away samples of dog food. He makes visits door to door, but he gives a sample away (one can of dog food) only on those visits for which the door is answered and a dog is in residence. On any visit, the probability of the door being answered is 3/4, and the ...
Tuesday, April 29, 2014 at 5:50pm

Calculus
How do you find the first and second derivative of the following function? P(t)=20/(1+3e^-0.02t)
Monday, April 28, 2014 at 10:58pm

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