Tuesday

May 26, 2015

May 26, 2015

**Math**

Six sprinters have qualified for the finals in the 100-meter dash at the NCAA national track meet. In how many ways can the sprinters come in first, second, and third? (Let's assume there are no tires).
*Thursday, April 23, 2015 at 5:45pm*

**Language Arts**

1. How do both employers first cheat their governess? The employers say they mad a note of the fact that the pay is 30 rubbles a month and not 40 The employers indicate that an agreement was made about losing pay for holidays The employers decide to deduct rubles from the ...
*Thursday, April 23, 2015 at 10:57am*

**Calculus**

(Bees collecting pollen and nectar - Optimization) Many bees collect both pollen and nectar. Pollen is used for protein, and nectar is used for energy. Suppose the amount of nectar harvested during t seconds on a flower is: F(t)=t/(1+t) and that the amount of pollen harvested ...
*Wednesday, April 22, 2015 at 10:52pm*

**math**

On a 3 day hike, Robert hiked twice as many miles on the first day as on the second day. On the third day he hiked 5 miles. Carlos hiked 5 miles on the first day and three times as many miles as on the second day as on the third day. (a) Write and simplify an expression for ...
*Wednesday, April 22, 2015 at 10:35pm*

**Art please help me :)**

Pictures: Pair of Armchairs by unknown artist Digital image courtesy of the Getty's open content program. I couldn't find this picture in google. Picture 2: Ceremonial Chair(The Elgin Throne) by unknown artist it was the first picture in google. The detailed French ...
*Wednesday, April 22, 2015 at 10:17pm*

**Art please help me :)**

Picture: Contemporary Retro Molded Black Accent Plastic Dining Armchair with Wood Eiffel Legs its the first picture in google. This wooden and plastic chair design by Ray and Charles Eames communicates a a sense of which artistic charateristic? A. Balance B. Rhythm C. Color D...
*Wednesday, April 22, 2015 at 10:16pm*

**math**

On a three day hike, Robert hiked twice as many miles on the first day as on the second day. On the third day he hiked 5 miles. Carlos hiked 5 miles on the first day and three times as many miles on the second day as on the third day. (a) Write and simplify an expression for ...
*Wednesday, April 22, 2015 at 10:08pm*

**Art **

Picture: Contemporary Retro Molded Black Accent Plastic Dining Armchair with Wood Eiffel Legs its the first picture in google. This wooden and plastic chair design by Ray and Charles Eames communicates a a sense of which artistic charateristic? A. Balance B. Rhythm C. Color D...
*Wednesday, April 22, 2015 at 8:16pm*

**Art**

Picture is: (lit a la polonaise)bed . It is the first image in google. This French bed mostly communicates what cultural value? A. peace B. Extravagance C. Frugality D. Independence Is the answer B? Thank you
*Wednesday, April 22, 2015 at 7:53pm*

**Art **

Pictures: Pair of Armchairs by unknown artist Digital image courtesy of the Getty's open content program. I couldn't find this picture in google. Picture 2: Ceremonial Chair(The Elgin Throne) by unknown artist it was the first picture in google. The detailed French ...
*Wednesday, April 22, 2015 at 7:38pm*

**Trig**

The graph of y-7 cosθ + 24 sinθ would be a sinusoid if it were plotted. What would be the first positive value of θ at which there is a high point?
*Wednesday, April 22, 2015 at 7:08pm*

**Consumer math**

Determine the cost of a taxi trip of 9 2/3 miles if the fare is $1.10 for the first 1/6 mile and $.20 for each additional 1/6 mile (or fraction). a. $11.90 b. $11.20 c. $12.50 d. $12.80 Determine the cost of a taxi trip of 9 miles if the fare is $1.10 for the first 1/6 mile ...
*Wednesday, April 22, 2015 at 6:23pm*

**Social Studies**

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 points) • Central America's economy ...
*Wednesday, April 22, 2015 at 4:29pm*

**Math**

In 1954, Mt. Everest was measured as having an elevation of 8848 m. In 1998 to 2000, Mt. Everest was measured as having an elevation of 8850 m. Using an average rate of uplift of 6.5 mm/y, how much has Mt. Everest risen since it was first measured? How does this compare with ...
*Wednesday, April 22, 2015 at 2:48pm*

**Math**

In 1954, Mt. Everest was measured as having an elevation of 8848 m. In 1998 to 2000, Mt. Everest was measured as having an elevation of 8850 m. Using an average rate of uplift of 6.5 mm/y, how much has Mt. Everest risen since it was first measured?
*Wednesday, April 22, 2015 at 11:15am*

**Math (Please, help me!)**

In 1954, Mt. Everest was measured as having an elevation of 8848 m. In 1998 to 2000, Mt. Everest was measured as having an elevation of 8850 m. Using an average rate of uplift of 6.5 mm/y, how much has Mt. Everest risen since it was first measured?
*Wednesday, April 22, 2015 at 9:58am*

**math**

In a pack of 52 cards, 4 of the cards are Kings. The first card is picked, the results are recorded and the card is returned to the deck. Then the second card is picked. Find the probability of picking two kings. Be sure to represent your answer as a fraction in simplest form.
*Wednesday, April 22, 2015 at 7:29am*

**math**

A bag of marbles contains 8 red marbles and 6 yellow marbles. Two marbles are drawn out of the bag at random without replacement. What is the probability that first a red marble then a yellow marble are drawn? Represent your answer as a fraction in simplest form.
*Wednesday, April 22, 2015 at 7:27am*

**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?
*Tuesday, April 21, 2015 at 8:00pm*

**can you explain this to me government**

First decision by the Supreme Court to declare a law unconstitutional. At the very end of his term, President John Adams had made many federal appointments, including William Marbury as justice of the peace in the District of Columbia. Thomas Jefferson, the new president, ...
*Tuesday, April 21, 2015 at 7:08pm*

**Language Arts**

Hello, I need help with these questions and checking my answers. First Question: Which one of these lines is the main conflict? I don't have to remind you to get your grades up,You're the only one without approval thats due in two weeks, or Jason who is entering the ...
*Tuesday, April 21, 2015 at 6:57pm*

**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?
*Tuesday, April 21, 2015 at 6:46pm*

**Probability**

Let Θ be an unknown random variable that we wish to estimate. It has a prior distribution with mean 1 and variance 2. Let W be a noise term, another unknown random variable with mean 3 and variance 5. Assume that Θ and W are independent. We have two different ...
*Tuesday, April 21, 2015 at 12:03pm*

**math**

the fourth terms of an AP is 37 and the 6th terms is 12 more than the fourth term.Find the first and seventh terms.
*Tuesday, April 21, 2015 at 3:51am*

**History **

How were William Lloyd Garrison and the Rev. Elijah Lovejoy alike? Both lived in Boston and were Underground Railroad conductors. Both printed newspapers with antislavery messages in the North. Both used their houses as Underground Railroad stations and risked their lives for ...
*Monday, April 20, 2015 at 7:27pm*

**Science**

When evolution was first proposed, which of the following was used as evidence to support the idea? 1.observations of nature 2.laboratory experiments 3.extensive fossil collections 4.genetic sequences 1.?
*Monday, April 20, 2015 at 7:04pm*

**AP Chemistry **

This is the question I am having trouble with: A voltaic cell consists of a strip of lead metal in a solution of Pb(NO3)2 in one beaker, and in the other beaker a platinum electrode is immersed in a NaCl solution, with Cl2 gas bubbled around the electrode. A salt bridge ...
*Monday, April 20, 2015 at 5:28pm*

**Physics**

At a given instant three electrons, in vacuum, happen to lie on a straight line. The first and second are separated by 3.00x 10-6 m, while the second and third are 8.00 10-6 m apart. What is the magnitude of the net electrostatic force on the middle electron, the second one?
*Monday, April 20, 2015 at 4:55pm*

**Math**

1.What is the volume of the figure above if a = 6 units and b = 9 units? A. 1,620 cubic units B. 540 cubic units C. 324 cubic units D. 342 cubic units 2.Susan is building a cage for her rabbit and started by making the supports for the cage as shown below, where a = 14 inches...
*Monday, April 20, 2015 at 1:48pm*

**math**

if 4th term of an arithmetic progression is 3 times the 1st term nd 7th term exceeds twice the third term by 1. find the first term and common difference
*Monday, April 20, 2015 at 1:07pm*

**MATHEMATIC DEPARTMENT**

The second, third and ninth terms of an arithmetic progression forms the first, second and third terms of a geometric progression. Find the common ratio and hence the eleventh term of geometric progression.
*Monday, April 20, 2015 at 7:37am*

**Calculus check and help**

Let f and g be the functions given by f(x)=1+sin(2x) and g(x)=e^(x/2). Let R be the shaded region in the first quadrant enclosed by the graphs of f and g. A. Find the the area of R. B. Find the value of z so that x=z cuts the solid R into two parts with equal area. C. Find the...
*Sunday, April 19, 2015 at 11:59pm*

**Calculus**

Let f and g be the functions given by f(x)=1+sin(2x) and g(x)=e^(x/2). Let R be the shaded region in the first quadrant enclosed by the graphs of f and g. A. The region R is the base of a solid. For this solid, the cross sections, perpendicular to the spx-axis, are rectangles ...
*Sunday, April 19, 2015 at 9:43pm*

**Vectors**

What is the nature of intersection of these three planes: 5x+3y-z=11 -2x-7y+10z=2 6x+21y-30z=-6 I know that the answer is two parallel planes and the other one intersecting in a line. my question is how would you know that the first equation intersects in a line? Would you use...
*Sunday, April 19, 2015 at 7:45pm*

**English**

Which choice would supply the strongest, most logical support for this claim? Lakeside Manor is a wonderful new community on Lake Winchester. A. After just a few hours, you will know you want to move there. B. There is ample parking for all residents and for guests. C. ...
*Sunday, April 19, 2015 at 7:42pm*

**Calculus**

Let f and g be the functions given by f(x)=1+sin(2x) and g(x)=e^(x/2). Let R be the shaded region in the first quadrant enclosed by the graphs of f and g. A. Find the volume of the solid generated when R is revolved around the line y=pi. B. Fine the volume of the solid ...
*Sunday, April 19, 2015 at 6:34pm*

**Calculus**

Let f and g be the functions given by f(x)=1+sin(2x) and g(x)=e^(x/2). Let R be the shaded region in the first quadrant enclosed by the graphs of f and g. A. Find the the area of R. B. Find the value of z so that x=z cuts the solid R into two parts with equal area. C. Find the...
*Sunday, April 19, 2015 at 5:24pm*

**Science**

An iodoalkane A, with a molecular mass of 198, contains 30.3% carbon and 5.6% hydrogen by mass. It reacts with aqueous sodium hydroxide solution to give an alcohol which can be oxidised and with ethanolic potassium hydroxide solution to give two alkenes, neither of which show ...
*Sunday, April 19, 2015 at 1:09pm*

**math**

How old are they? I found this question online. Please help me understand where I may have made a mistake. Thanking you in advance. My question: Norman is now 4 times the age of her son, 3 years ago, the sum of their ages was 49. How old are they now?. My Answer: First step: (...
*Sunday, April 19, 2015 at 12:19pm*

**Error Analysis**

Please help me find the wrong grammar, word use and sentences structure for me.. *It's not essay. It's my homework from teacher to modify What can you do to reduce global warming in Thailand Global warming is big problem for the word. Now, the word want assistance from...
*Sunday, April 19, 2015 at 3:17am*

**Art**

Image: Russian icon of saint George slaying the dragon by chrysanthos Its the first image. At the center of this textile us the large form of Sr. George, who is skating a dragon on a horse. Which of the following culturally important message does this piece communicate? A. ...
*Saturday, April 18, 2015 at 11:01pm*

**Sequences **

find the nth term and write an equation to express 4,36,100,196,324 so far I've got 32(n-1) + 4 but it only works for the first two . . .
*Saturday, April 18, 2015 at 10:36pm*

**General Physics**

A 5.00 kg howler monkey is swinging due east on a vine. It overtakes and grab onto a 6.00 kg monkey also moving east on a second vine. The first monkey is moving at 12.0 m/s at the instant I grabs the second, which is moving at 8.00 m/s. After they join on the same vine, what ...
*Saturday, April 18, 2015 at 10:17pm*

**Maths**

find the nth term and write an equation to express 4,36,100,196,324 so far I've got 32(n-1) + 4 but it only works for the first two . . .
*Saturday, April 18, 2015 at 9:39pm*

**Chemistry**

4. A typical car engine produces 44,000 kJ of heat in an hour. The cooling system has a capacity of 8.40 L and is filled with a 50:50 mixture of anti-freeze (specific heat capacity of 8.37 J/g-oC, density of 1.038 g/mL). In maintaining a constant engine temperature, the ...
*Saturday, April 18, 2015 at 7:28pm*

**science**

A cart of weight 25 N is released at the top of an inclined plane of length 1m, which makes an angle of 30° with the ground. It rolls down the plane and hits another cart of weight 40 N at the bottom of the incline. Calculate the speed of the first cart at the bottom of ...
*Saturday, April 18, 2015 at 11:03am*

**statistics**

Joe dealt 20 cards from a standard 52-card deck, and the number of red cards exceeded the number of black cards by 8. He reshuffled the cards and dealt 30 cards. This time, the number of red cards exceeded the number of black cards by 10. Determine which deal is closer to the ...
*Saturday, April 18, 2015 at 10:49am*

**error analyze**

Can you check grammatical error, word use error and sentence structure error in this text? >>>This text is text, teacher to come to find the errors. I need you help just tell the error of each part. What's there? >>>Thank you<<< What can you do ...
*Saturday, April 18, 2015 at 10:37am*

**error analyze**

Can you check grammar error in this text? What can you do to reduce global warming in Thailand? Nowadays, The problem global warming is main problem for everybody in the world. It is effect on change of weather that the world have temperature highest. In Thailand, the problem ...
*Saturday, April 18, 2015 at 2:19am*

**calc**

Suppose that an accelerating car goes from 0 mph to 58.6 mph in five seconds. Its velocity is given in the following table, converted from miles per hour to feet per second, so that all time measurements are in seconds. (Note: 1 mph is 22/15 feet per sec = 12/15 ft/s.) Find ...
*Friday, April 17, 2015 at 6:41pm*

**Algebra**

Solve the equation. Use factoring or the quadratic formula, whichever is appropriate. Try factoring first. If you have any difficulty factoring, then go right to the quadratic formula. (Enter your answers as a comma-separated list.) (x+2)^2 + (x-7)(x-2)=16
*Friday, April 17, 2015 at 5:15pm*

**Language Arts**

1. The word aloof is an English word borrowed from Dutch. Its meaning is "at a distance." In which of the following sentences is the word used correctly? Anne's sociable nature mad her aloof in new situations When he first arrived at the Secret Annex, Peter kept ...
*Friday, April 17, 2015 at 4:59pm*

**physics**

An elastic collision occurs between two air hockey pucks in which one puck is at rest and the other is moving with a speed of 0.7 m/s. After the collision, the puck initially in motion makes an angle of 20.00 o with its original direction, and the struck puck moves at an angle...
*Friday, April 17, 2015 at 3:07pm*

**physics**

An elastic collision occurs between two air hockey pucks in which one puck is at rest and the other is moving with a speed of 0.7 m/s. After the collision, the puck initially in motion makes an angle of 20.00 o with its original direction, and the struck puck moves at an angle...
*Friday, April 17, 2015 at 2:38pm*

**Math Help ASAP**

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? Survey the first 100 moviegoers leaving the movie ...
*Friday, April 17, 2015 at 2:11pm*

**Stream Physics Hydrology - HELP!!!!**

1a) An aqueous solution containing 35 kg of endosuflan insecticide is accidentally released into a small stream. The stream dimensions are 17.5 meters wide and 1.15 meters deep. The stream velocity is 1.1 m/s. The stream channel drops 24m over a distance of 10 km. Endosuflan ...
*Friday, April 17, 2015 at 1:08pm*

**Accounting/Finance**

Temte Corporation is authorized to issue 1,000,000 shares of no-par common stock and 250,000 shares of 6 percent, $25 par value, cumulative preferred stock. These events affected stockholders’ equity during the first year of operations: 1. 125,000 shares of common stock ...
*Friday, April 17, 2015 at 1:03pm*

**Math**

1.) In the following problem, write the first five of the terms of the arithmetic sequence. a1=16.5 d=0.25 2.) Find a the correct formula for the an for the arithmetic sequence. a1=-1 d=5
*Thursday, April 16, 2015 at 10:27pm*

**Math**

Rate varies inversely as time. Sandy rode her bicycle to Micah's house at a rate of 5 mi/h. She returned home at a rate of 4 mi/h. If the first leg of the trip took 20 minutes how long did the second leg of the trip take
*Thursday, April 16, 2015 at 9:45pm*

**Math**

My problem is: "Will ran four miles on his first day of training. The next day he ran 1/3 of that distance. How far did he run the second day" I need help. I think it is either 1 or it is 3 and 1/4. I'm undecided.
*Thursday, April 16, 2015 at 9:20pm*

**english**

Henry and Lois are discussing ways to evaluate sources. Henry maintains that one should scan a source before skimming it. Lois argues that scanning is the best first step in evaluating a source. Who is correct?
*Thursday, April 16, 2015 at 8:00pm*

**calculus**

The base of a solid in the xy-plane is the first-quadrant region bounded y = x and y = x2. Cross sections of the solid perpendicular to the x-axis are equilateral triangles. What is the volume, in cubic units, of the solid?
*Thursday, April 16, 2015 at 4:25pm*

**Strategies for the Independent Learner**

When you approach a text, you should A. survey it, using the technique called SQ3R. B. dive right in at the first page and read the assigned section. C. skip over words you don’t know. D. read only the boldface type. 2. The proctored exams for your degree courses are A. ...
*Thursday, April 16, 2015 at 3:31pm*

**math**

given the equation -3x +2y =4, Write another equation that will form a linear system with: one solution, no solution and infinite solution. infinite solution: (-3x +2y =) * 3 -> -9x +6y =12 y=3/2x+4 -9x +6y =12 I think we have to multiple the first equation by non-zero ...
*Thursday, April 16, 2015 at 2:27pm*

**College Physics**

Two cars collide at an icy intersection and stick together afterward. The first car has a mass of 1050Kg and was approaching at 8.00m/s due south. The second car has a mass of 700Kg and was approaching at 20.0m/s due west. A) Calculate the final velocity of the cars.(Note ...
*Thursday, April 16, 2015 at 2:07pm*

**Language Arts**

1. What is one cause of the increased tension in Act 2 of The Diary of Anne Frank? Mr. Dussel to take control of the group Mr. Dussel picks on things that people care for or are sensitive about Peter is intentionally unkind to Margot and anne Mr. Frank asks Miep fro favors ...
*Thursday, April 16, 2015 at 2:03pm*

**science**

What do bone marrow (the soft connective tissue that fills the internal spaces in bone) and the dermis (layer of the skin under the epidermis and over the hypodermis) have in common? (1 point) • They are both sites of new cell formation. • They both contain or are ...
*Thursday, April 16, 2015 at 1:18pm*

**calc(very urgent)**

Imagine a flat-bottomed cylinderal container with a circular cross section of radius 4 in. a marble with radius 0<r<4 inches is placed in the bottom of the can. what is the radius of the bottom that requires the most water to cover it. (include first or second derivative...
*Thursday, April 16, 2015 at 7:54am*

**please help! someone plz**

Imagine a flat-bottomed cylinderal container with a circular cross section of radius 4 in. a marble with radius 0<r<4 inches is placed in the bottom of the can. what is the radius of the bottom that requires the most water to cover it. (include first or second derivative...
*Thursday, April 16, 2015 at 1:08am*

**algebra**

what is the first step when solving x/15=3/5? write a proportion using an unknown value x and the ratio 5:6 then solve it. in an orchestra, the ratio of trombones to violas is 1 to 3. a. there are 9 violas. write a proportion that gives the number t of trombones in the ...
*Wednesday, April 15, 2015 at 10:31pm*

**Math (ASAP)**

Write out the first 4 terms of the following sequence that is define recursively. a1=32 ak+1=1/2ak
*Wednesday, April 15, 2015 at 10:10pm*

**chemistry**

A compound has 85 % tin and 15% antimony. How many grams of antimony will be in 50. grams of the compound. My question is do I need to calculate the empirical formula first to do thi? I'm not sure where to start.
*Wednesday, April 15, 2015 at 9:55pm*

**math **

Imagine a flat-bottomed cylinderal container with a circular cross section of radius 4 in. a marble with radius 0<r<4 inches is placed in the bottom of the can. what is the radius of the bottom that requires the most water to cover it. (include first or second derivative...
*Wednesday, April 15, 2015 at 9:33pm*

**calculus (optimization prob help!)**

Imagine a flat-bottomed cylinderal container with a circular cross section of radius 4 in. a marble with radius 0<r<4 inches is placed in the bottom of the can. what is the radius of the bottom that requires the most water to cover it. (include first or second derivative...
*Wednesday, April 15, 2015 at 9:02pm*

**math**

The batting averages of the first three batters in the Eureka College women’s softball team lineup are .310, .301, and .277. If the first three batters are considered as the “lead-off group”, what is the batting average of the group? A. .301 B. .296 C. There is ...
*Wednesday, April 15, 2015 at 8:41pm*

**Math (ASAP)**

Write out the first 4 terms of the following sequence that is define recursively. a1=32 ak+1=1/2ak
*Wednesday, April 15, 2015 at 8:22pm*

**Chemistry**

Suppose you are assigned to prepare a buffer of 0.10M HNO2 (Ka=1.7 x 10^-4) and 0.10M NaNO2 by mixing equal volumes of both solutions. What is the pH of the resultant solution? How would I first start this question? I have no clue what the steps are to be frank.
*Wednesday, April 15, 2015 at 5:17pm*

**Science/Physics **

My question is you walk 3.9 kilometers to school. In gym, you do the 12 minute run and actually make it 2.4 kilometers. After school you walk your friend home first and then go home it is 3.1 kilometers farther than your morning walk to school. What was your total distance ...
*Wednesday, April 15, 2015 at 3:36pm*

**writting skills**

1. Which one of the following comes first in an online catalog entry? A. Title of the book B. Year of publication C. Call number of the book D. Author's last name Student Answer: B Answer: Incorrect Reference: 2. You've located three books on a topic you're ...
*Wednesday, April 15, 2015 at 3:30pm*

**english**

Hello I am having quite a bit of trouble trying to figure out a better way to answer this. 1. In the video, The Fates Present: Pyramus & Thisbe,There are parts of the animated version in which there is a character, who appears at the beginning of the animation first, and who ...
*Wednesday, April 15, 2015 at 12:08pm*

**science **

1. What do bone marrow and the epidermis have in common? They are both sites of new cell formation. They both contain structures that assist the body in cooling down if overheating occurs. They both contain or are associated with sensory neurons. They are both involved in ...
*Wednesday, April 15, 2015 at 10:43am*

**6th Grade Science Experiment**

Hi, forget my first post. Can someone please explain what a dependent and independent variable is? Thanks and I don't have too much time either.
*Wednesday, April 15, 2015 at 10:03am*

**statistics**

A tennis player makes a successful first serve 51% of the time. if she serves 9 times, what is the probability that she gets exactly 3 first serves in? assume that each serve is independent of the others.
*Wednesday, April 15, 2015 at 1:59am*

**Math**

How would you fine the relative extrema of f(x)=x+8^-x ? I know the first step is to find the derivative, which when I did I got f'(x)=1+[(-1)(ln(8))(8^-x)] Did I find the derivative correctly? And if I did, how do I find the zeroes of that??
*Tuesday, April 14, 2015 at 10:39pm*

**6th grade math**

While battling a forest fire , Samuel was only able to get three hours of sleep during the first day. What was the percent of the day was Sam awake F. 87.5% G. 37.5% H. 90% J. 10%
*Tuesday, April 14, 2015 at 9:13pm*

**calculus multiple choice**

1.The region in the first quadrant bounded by the x-axis, the line x = ln(π), and the curve y = sin(e^x) is rotated about the x-axis. What is the volume of the generated solid? a: 0.906 b:0.795 c:2.846 d: 2.498 2.Find the average value of f(x)=2/x over the interval [1, 3...
*Tuesday, April 14, 2015 at 9:00pm*

**Chemistry**

when titrating 50 mL of .10M H2SO45 with .10 M NaOH, how many mL of NaOH will you have added to reach first equivalence point?
*Tuesday, April 14, 2015 at 8:43pm*

**Chemistry**

I am working on a five-part question and I just need help with the last part. I'm not sure where to begin with that one. I pasted the question and answers (for a-d) to the other parts below. Thank you! Consider the proposed mechanism for the reaction between nitrogen ...
*Tuesday, April 14, 2015 at 6:53pm*

**math**

find the first 3 term s of an arithmetic sequence in which the 21 term is -54 and the fifteenth term is -170
*Tuesday, April 14, 2015 at 5:25pm*

**Math**

Neil needs to cut 3 long boards into 9 smaller boards. The first is 10 ft, the second is 16 ft, and third is 18 ft. The table lists the smaller boards Neil needs. Use a drawing to show how he can divide the 3 boards so there is no waste.
*Tuesday, April 14, 2015 at 5:06pm*

**math**

Neil needs to cut 3 long boards into 9 smaller boards. The first is 10 ft, the second is 16 ft, and the third is 18 ft. The table lists the smaller boards Neil needs. Use a drawing to show how he can divide the 3 boards so there is no waste. Length of board Number needed 4 ft ...
*Tuesday, April 14, 2015 at 4:45pm*

**Reading**

This is the last question! OK here it goes. In which sentence about A Christmas Carol is the word conveyed used correctly? Marley first conveyed through Scrooge's doorknocker The Thin and Portly men conveyed donation's in Scrooge's office Marely conveyed the ...
*Tuesday, April 14, 2015 at 4:14pm*

**Maths**

Two flares are launched from a life raft. The height h of the first flare in metres above the sea is modelled by the formula h1= t2+t+1meters,and the second flare is h2=4-t where t is the time 12 in seconds after the flare is launched. Determine (i) Time taken and (ii) Height ...
*Tuesday, April 14, 2015 at 8:39am*

**Physics**

A train accelerates from the rest at the station A at a rate of 0.8 m/s2 for 25 s, the travels at constant velocity for 77.5 s before it comes to rest at the station B after period of retardation lasting 20 s. What is the distance between stations A and B, and the average ...
*Tuesday, April 14, 2015 at 4:16am*

**physics**

Choose one of the Laws of Thermodynamics (zeroth, first, second, or third) and give a brief summary of its development. Who is credited with "discovering" it and when? How did the four laws come to be ordered as they are? Please explain in detail
*Tuesday, April 14, 2015 at 2:55am*

**physics**

A particle starts moving from rest with uniform acceleration.It travels a distance x in first 2 sec and a distance y in the next 2 sec.Then Answer) y=3x
*Tuesday, April 14, 2015 at 12:46am*

**L.A**

The word aloof is an English word borrowed from Dutch. It's meaning is "at a distance". In which of the following sentences is the word used correctly? A. Anne's sociable nature made her aloof in new situations. B. When he first arrived at the secrete Annex, ...
*Tuesday, April 14, 2015 at 12:29am*

**calculus**

The base of a solid is the region in the first quadrant bounded by the graph of y = 3/(e^x) , the x-axis, the y-axis, and the line x=2. Each cross section of this solid perpendicular to the x-axis is a square. What is the volume of the solid?
*Monday, April 13, 2015 at 9:39pm*

**Mia**

A Screamingly Good Science Lesson Elizabeth Kibler 1Amusement park rides give us thrills, exhilaration, and delight. If you pay attention, these rides can give you something else—a science lesson. Roller coasters are amazing rides that can twist and veer until you scream...
*Monday, April 13, 2015 at 7:14pm*

**math**

A professor gave his 40 students a test with three questions. Every student answered at least one question. Ten student did not answer the first question, 14 did not answer the second question, and 12 did not answer the third question. If 18 students answered all three ...
*Monday, April 13, 2015 at 5:02pm*