Sunday

April 19, 2015

April 19, 2015

**Math 112**

On your first two exams, your grades are 86% and 88% x=86 and y=88 What must you get on the third exam to have an average of 90%?
*Wednesday, October 15, 2014 at 8:31pm*

**Physics Help Please!!!!**

During a launch of the shuttle, fuel is being burned at a rate of 2000 kg every second. the exhaust from the burning of this fuel is expelled by the engines and can be seen during the launch. readings from instruments mounted on the space shuttle show that for the first 2 min ...
*Wednesday, October 15, 2014 at 8:23pm*

**Counseling **

I chose C for this question. Is C the correct answer? 1. Dr. Ben Casey encountered a problem with a new client in therapy. Using the model of reflective practice what is the sequence of steps Dr. Jones should use in order to work with this client effectively? a. Reflect on ...
*Wednesday, October 15, 2014 at 5:26pm*

**physics**

A uniform 3.05 kg board of length L = 1.58 m overhangs the edge of a table by x = 0.32 m. If a 4.87 kg block is placed on the board, what is the maximum distance d from the edge of the table that the block can be placed without tipping the board? so you have to solve for d. (L...
*Wednesday, October 15, 2014 at 5:02pm*

**math**

Find three consecutive positive even integers such that four times the first decreased by the second is 12 more than twice the third.
*Wednesday, October 15, 2014 at 4:54pm*

**psychology**

I chose the answer that I believe to be correct. I need help from an expert to indicate if the answers that I chose are right or wrong answers and indicate the correct letter or answer needed. Question 1 1. Dr. Jones encountered a problem with a new client in therapy. Using ...
*Wednesday, October 15, 2014 at 4:49pm*

**psychology**

I chose the answer that I believe to be correct. I need help from an expert to indicate if the answers that I chose are right or wrong answers and indicate the correct letter or answer needed. Question 1 1. Counselors use Bronfenbrenners model most explicitly in their work ...
*Wednesday, October 15, 2014 at 4:05pm*

**arithmetic**

if A and B ARE MOVING IN a circular track of length 0.32miles from the start line whose speed are 7 miles per hour and 9 miles per hour respectively ,then after how many seconds will they meet for the first time?
*Wednesday, October 15, 2014 at 5:30am*

**algebra**

You began a new job at a pizza shop 3 weeks ago. You worked 6 hours during the first week, 4 hours during the second week, and 10 hours during the third week. Which graph best represents the total hours you worked over these 3 weeeks? i tried solving it myself and found an ...
*Tuesday, October 14, 2014 at 4:27pm*

**Chemistry**

Hi was looking to get some help with an experiment. Currently I trying to determine the amount iron in cereal. And was hoping to get some help with one of the questions I have been given. First off I am the recorded absorbance across the region 470 – 490 nm for the 3.00 ...
*Tuesday, October 14, 2014 at 9:12am*

**English**

Don't laugh at him. He looks serious. -------------- In the first sentence, does 'laugh at' mean 'ridicule' or 'to make the sounds and movements of your face that show you are happy'?
*Tuesday, October 14, 2014 at 6:33am*

**math**

Yoon Ki drove from Phoenix to tucson in 1 1/2 hours. then she drove from tucson to el paso in 4 3/4 hours. the second part of her trip was how many times as long as the first part.
*Tuesday, October 14, 2014 at 2:16am*

**Finance**

A mortgage broker is offering a $225,000 30-year mortgage with a teaser rate. In the first two years of the mortgage, the borrower makes monthly payments on only a 2.5 percent APR interest rate. After the second year, the mortgage interest rate charged increases to 8.5 percent...
*Monday, October 13, 2014 at 9:55pm*

**Finance**

As a college student, you probably receive many credit card offers in the mail. Consider these two offers. The first card charges a 17 percent APR. An examination of the footnotes reveals that this card compounds monthly. The second credit card charges 16.25 percent APR and ...
*Monday, October 13, 2014 at 9:29pm*

**Finance**

12. Your current $155,000 mortgage calls for monthly payments over 25 years at an annual rate interest rate of 6 percent. If you pay an additional $50 each month beginning with the first payment, how much interest expense do you save by pre-paying?
*Monday, October 13, 2014 at 9:22pm*

**physics**

A particle undergoes two displacements. The first has a magnitude of 135cm and makes an angle of 114° with the positive x axis. The resultant displacement had a magnitude of 183cm and is directed at an angle of 21.8° to the positive x axis. Find the magnitude of the ...
*Monday, October 13, 2014 at 9:02pm*

**statistics**

Employees at Evergreen Manufacturing company have annual salaries ranging from a low $12,500 to a high of 92,000. Assuming that you want to construct a frequency table with eight classes, find the upper and lower limits of the first class. How do I work the problem? Please?
*Monday, October 13, 2014 at 8:44pm*

**Algebra**

A boat was purchased for $45,000. Assuming the boat depreciates at a rate of $4700 per year (straight-line depreciation) for the first 8 years, write the value v of the boat as a function of the time t (measured in years) for 0 ¡Ü t ¡Ü 8. v(t) = _______...
*Monday, October 13, 2014 at 8:29pm*

**Math889**

A particle moves according to a law of motion s = f(t), t ≥ 0, where t is measured in seconds and s in feet. f(t) = te−t/4 (a) Find the velocity at time t (in ft/s). v(t) = (b) What is the velocity after 1 s? (Round your answer to two decimal places.) v(1) = ft/s (...
*Monday, October 13, 2014 at 6:39pm*

**chemistry**

Nitric acid, HNO3, was first prepared 1200 years ago by heating naturally occurring sodium nitrate (called saltpeter) with sulfuric acid to produce sodium bisulfate and collecting the vapors of HNO3 produced. Calculate ΔH°rxn for this reaction. ΔH°f[NaNO3(s...
*Monday, October 13, 2014 at 6:16pm*

**chemistry**

Nitric acid, HNO3, was first prepared 1200 years ago by heating naturally occurring sodium nitrate (called saltpeter) with sulfuric acid to produce sodium bisulfate and collecting the vapors of HNO3 produced. Calculate ΔH°rxn for this reaction. ΔH°f[NaNO3(s...
*Monday, October 13, 2014 at 3:09pm*

**Math**

An urn contains 3 red, 4 orange, and 6 yellow marbles. 2 marbles are selected without replacement. Find the probability that the second marble selected is orange given that the first marble selected is yellow.
*Monday, October 13, 2014 at 2:35pm*

**physics **

A space probe is to be put into a circular orbit of radius 42.00 km about an asteroid. At this radius the magnitude of the gravitational acceleration, normally referred to as the "gravitational field", is 1.00×10-3 meters per second squared. What speed, in ...
*Monday, October 13, 2014 at 2:34pm*

**us history**

True or False The first US president brought a tone of informality and simplicity to the office. this is false right?
*Monday, October 13, 2014 at 11:47am*

**MATH 101**

Factor completely. Be sure to factor out the greatest common factor first if it is other than 1. (If the polynomial is prime, enter PRIME.) 56a^2+39ab-27b^2
*Monday, October 13, 2014 at 1:24am*

**English**

1. Mattie's first wish came true in 2001. 2. Mattie's first wish was realized in 2001. (Are both the same?) 3. His first poetry book, Heartsongs, came out and became a best-seller. 4. His first poetry book, Heartsongs, was published and became a best-seller. (Are both ...
*Monday, October 13, 2014 at 12:42am*

**Math-Urgent help please.**

Two cards are selected, without replacing the first card, from a standard deck. Find the probability of selecting an ace (A), and then selecting a 4 (B): (choose 2) 0.603% 0.592 0.592% They are dependent events. 0.00592
*Monday, October 13, 2014 at 12:02am*

**Math**

A store selling art supplies finds that they can sell x sketch pads each week at a price of p dollars each, according to the formula x = 2100 - 300p. What price should they charge if they want to sell at least 600 pads each week? (First use the formula to write an inequality ...
*Sunday, October 12, 2014 at 11:28pm*

**Physics**

Two children are playing on two trampolines. The first child can jump one and a half times higher than the second child. The initial speed of the second child is 5 m/s. What is the maximum height of the second child? What is the initial speed of the first child? How long was ...
*Sunday, October 12, 2014 at 8:16pm*

**algebra**

Find all points on the x-axis that are 10 units from the point (7, 6). (Hint: First write the distance formula with (7, 6) as one of the points and (x, 0) as the other point.)
*Sunday, October 12, 2014 at 7:26pm*

**Finance **

You account pays interest at 8 percent p.a. You deposit $35,945 in it today. You must have exactly $88,956 in the account at the end of two years. What should you do at the end of the first year to ensure this? Answer: $43,544.99 Can anyone show me the steps to solve this ...
*Sunday, October 12, 2014 at 2:58pm*

**Algebra **

Darren McFadden of Arkansas placed second overall in the Heisman Tophy voting. Players are given 3 points for every first place vote, 2 points for every second-place vote, and 1point for every third place vote. McFadden received 490 total votes for a total of 878 points. If he...
*Sunday, October 12, 2014 at 12:31pm*

**E.L.A. PLEASE CHECK!**

In Langston Hughes's short story "Gumption," of which kind of narration is the following sentence an example: "'You can't live on gumption,' I said, trying to be practical”? A- third-person omniscient B- second-person C- third-person limited...
*Saturday, October 11, 2014 at 7:41pm*

**AP Chemistry**

1. If alum is heated at first too strongly causing it to splatter out of the crucible what effect will this have on the determination of the water hydration? 2. If alum is heated insufficiently what effect will this have on the determination of the water hydration? 3. If not ...
*Saturday, October 11, 2014 at 3:33pm*

**science!! please help me!!**

1)When evolution was first proposed, which of the following was used as evidence to support the idea? (1 point) A)observations of nature*** B)laboratory experiments C)extensive fossil collections D)genetic sequences 2)How did Darwin and Lamarck differ in their thinking about ...
*Saturday, October 11, 2014 at 9:58am*

**Chem **

Find the constants (a and b) for O2 in Table 5.7. Use the Van der Waals equation to determine the pressure of 1.000 mole of O2 if the gas occupies 22.50 liters at 27.00 oC. First, find the values for each of the two terms in the equation, then find the difference. Show all ...
*Saturday, October 11, 2014 at 9:05am*

**work force leadership**

A supervisor needs to produce metal nameplates for bicycles. Two machines are available. The first requires a single die that costs $600. The plates will take 3 minutes each to produce at a total cost of $60 an hour. The second machine requires no initial expense but takes 6 ...
*Friday, October 10, 2014 at 9:38pm*

**Math**

f(x) = x^3 y1 = -x^3 + 4 b) Graph the function obtained from f by first translating up 4 units, then reflecting about the x-axis. Write a formula for the resulting function, y2. y2 = ? i tried x^3-4. my value wasn't correct
*Friday, October 10, 2014 at 8:36pm*

**statistics**

I need to find the chi square distribution. Thanks During the first 13 weeks of the television season, the Saturday evening 8:00 P.M. to 9:00 P.M. audience proportions were recorded as ABC 29%, CBS 28%, NBC 25%, and independents 18%. A sample of 300 homes two weeks after a ...
*Friday, October 10, 2014 at 3:06pm*

**economics **

First,label the following scenarios as to whether they would create a producer or consumer surplus. Then, after you have labeled each scenario, calculate the ensuing surplus. Roy is willing to pay $2.50 for a sports drink. He notices the price is $2.79 and chooses not to ...
*Friday, October 10, 2014 at 11:09am*

**economics **

First,label the following scenarios as to whether they would create a producer or consumer surplus. Then, after you have labeled each scenario, calculate the ensuing surplus. Claire is trying to sell her used calculus textbook online. She asks for $150 or best offer and is ...
*Friday, October 10, 2014 at 11:09am*

**economics**

First,label the following scenarios as to whether they would create a producer or consumer surplus. Then, after you have labeled each scenario, calculate the ensuing surplus. Nicole has in her possession a hockey puck from the 2010 Winter Olympic Games and sells it on eBay. ...
*Friday, October 10, 2014 at 11:07am*

**economics **

First,label the following scenarios as to whether they would create a producer or consumer surplus. Then, after you have labeled each scenario, calculate the ensuing surplus. Jeff finds some steaks for $16 for which he would have been willing to pay $20. The butcher notices ...
*Friday, October 10, 2014 at 11:06am*

**economics**

First,label the following scenarios as to whether they would create a producer or consumer surplus. Then, after you have labeled each scenario, calculate the ensuing surplus. Alice is willing to spend $30 on a pair of jeans, and has a coupon for $10 off she found online. She ...
*Friday, October 10, 2014 at 11:06am*

**math**

Hi, I just got my test back :( got 53% (16/30) how would I calculate my updated marks if the first test is worth 36%? Its my first test.
*Friday, October 10, 2014 at 11:04am*

**math**

With 20 pirates and 1000 pieces of gold: Captain Jack gets 113 gold coins (151 if you count the 38 everyone in the crew gets) First Mate gets 66 gold coins (104 if you count the 38 coins everyone in the crew gets) The Crew gets 38 gold coins each The PBA gets 7 gold coins. ...
*Friday, October 10, 2014 at 12:07am*

**Math**

With 20 pirates and 1000 pieces of gold: Captain Jack gets 113 gold coins (151 if you count the 38 everyone in the crew gets) First Mate gets 66 gold coins (104 if you count the 38 coins everyone in the crew gets) The Crew gets 38 gold coins each The PBA gets 7 gold coins. ...
*Thursday, October 9, 2014 at 11:11pm*

**math**

Joe starts a gym. In the first year, 300 people join. If the membership grows at an annual rate of 4%, how many members will there be after 5 years?
*Thursday, October 9, 2014 at 10:52pm*

**Math**

With 20 pirates and 1000 pieces of gold: Captain Jack gets 113 gold coins (151 if you count the 38 everyone in the crew gets) First Mate gets 66 gold coins (104 if you count the 38 coins everyone in the crew gets) The Crew gets 38 gold coins each The PBA gets 7 gold coins. ...
*Thursday, October 9, 2014 at 10:47pm*

**physics**

Two people jump out of an airplane. They hold on to each other while falling straight down at a shared terminal speed of 60.7 m/s. Suddenly, they push away from each other. Immediately after separation, the first skydiver (who has a mass of 89.3 kg) has the following velocity ...
*Thursday, October 9, 2014 at 10:40pm*

**statistics**

I need to find the chi square distribution. Thanks During the first 13 weeks of the television season, the Saturday evening 8:00 P.M. to 9:00 P.M. audience proportions were recorded as ABC 29%, CBS 28%, NBC 25%, and independents 18%. A sample of 300 homes two weeks after a ...
*Thursday, October 9, 2014 at 10:09pm*

**statistics**

During the first 13 weeks of the television season, the Saturday evening 8:00 P.M. to 9:00 P.M. audience proportions were recorded as ABC 29%, CBS 28%, NBC 25%, and independents 18%. A sample of 300 homes two weeks after a Saturday night schedule revision yielded the following...
*Thursday, October 9, 2014 at 9:07pm*

**Math **

find three consecutive positive odd integers such that the sum of the squares of the first and second integers is equal to the square of the third integer minus 7?
*Thursday, October 9, 2014 at 9:01pm*

**physics**

Heather and Jerry are standing on a bridge 53m above a river. Heather throws a rock straight down with a speed of 12m/s . Jerry, at exactly the same instant of time, throws a rock straight up with the same speed. Ignore air resistance. How much time elapses between the first ...
*Thursday, October 9, 2014 at 7:10pm*

**physics**

Heather and Jerry are standing on a bridge 53m above a river. Heather throws a rock straight down with a speed of 12m/s . Jerry, at exactly the same instant of time, throws a rock straight up with the same speed. Ignore air resistance. How much time elapses between the first ...
*Thursday, October 9, 2014 at 6:44pm*

**statistics **

During the first 13 weeks of the television season, the Saturday evening 8:00 P.M. to 9:00 P.M. audience proportions were recorded as ABC 29%, CBS 28%, NBC 25%, and independents 18%. A sample of 300 homes two weeks after a Saturday night schedule revision yielded the following...
*Thursday, October 9, 2014 at 4:49pm*

**rela**

in the lottery the reader first learn about the characters, setting, and plot. the second part mostly depends on dialogue, how does this change affect the pacing and mood of this part of the story.
*Thursday, October 9, 2014 at 4:36pm*

**Statistics **

During the first 13 weeks of the television season, the Saturday evening 8:00 P.M. to 9:00 P.M. audience proportions were recorded as ABC 29%, CBS 28%, NBC 25%, and independents 18%. A sample of 300 homes two weeks after a Saturday night schedule revision yielded the following...
*Thursday, October 9, 2014 at 1:57pm*

**Science**

1. When evolution was first proposed, which of the following was used as evidence to support the idea? A. observations of nature B. laboratory experiments C. extensive fossil collections D. genetic sequences 2. How did Darwin and Lamarck differ in their thinking about change ...
*Thursday, October 9, 2014 at 1:25pm*

**College Math **

A block with a mass of m = 31 kg rests on a frictionless surface and is subject to two forces acting on it. The first force is directed in the negative x-direction with a magnitude of F1 = 11 N. The second has a magnitude of F2 = 22.75 N and acts on the body at an angle θ...
*Thursday, October 9, 2014 at 1:22pm*

**physics**

A ring of mass m slides on a smooth vertical rod. A light string is attached to the ring and is passing over a smooth peg distant a from the rod, and at the other end of the string is a mass The ring is held on a level with the peg and released. It first comes to rest after ...
*Thursday, October 9, 2014 at 11:54am*

**English Comp**

Just want some advice on if i am doing this correctly. Thanks in advance. Combine each sentences using a semicolon. First is the original and the (#A) is my answer. 1. Abalone fishing in California is strictly regulated. A person is allowed to harvest only twenty-four of these...
*Thursday, October 9, 2014 at 10:24am*

**computer science programming**

Elements – sequence-series outputting Write a program that prints the following elements: 1, 3, 5, 7, 9, 11, 13, 15, 17, 19, (hereto referred to as elements) etc., up till a user-entered value. The program should not print more than 10 numbers per line. The last line ...
*Thursday, October 9, 2014 at 6:05am*

**science**

1.Darwin assumed that evolutionary change was always slow and gradual. What was the first evidence that suggested evolution change might happen fast sometimes? A. Homologous structures B. Fossils*** C. Reproduction rates D. DNA sequences 2.Which of the following provides ...
*Thursday, October 9, 2014 at 1:42am*

**Networks**

Consider the model of "Growing Random Networks" described in lecture 3.1 (so the first model where links are added to existing nodes uniformly at random), with m=10. At date t=40, what are: (1) the expected degree for node 15 born at i=15, and (2) the expected degree...
*Thursday, October 9, 2014 at 12:07am*

**Physics**

The lion first runs 200 yards at 20 deg. south of west, then 300 yards at 40 deg. west of north, and finally 400 yards at 10 deg east of north at which point it catches up to the deer. How far from the starting point, and in what direction is the point where the lion and the ...
*Wednesday, October 8, 2014 at 10:53pm*

**statistics; emergency please help me**

During the first 13 weeks of the television season, the Saturday evening 8:00 P.M. to 9:00 P.M. audience proportions were recorded as ABC 29%, CBS 28%, NBC 25%, and independents 18%. A sample of 300 homes two weeks after a Saturday night schedule revision yielded the following...
*Wednesday, October 8, 2014 at 9:58pm*

**economics 2**

During the first 13 weeks of the television season, the Saturday evening 8:00 P.M. to 9:00 P.M. audience proportions were recorded as ABC 29%, CBS 28%, NBC 25%, and independents 18%. A sample of 300 homes two weeks after a Saturday night schedule revision yielded the following...
*Wednesday, October 8, 2014 at 9:12pm*

**math**

Janet bakes a cake in the shape of a cube with side length x (in inches). She makes a vertical cut parallel to one of the sides, resulting in a slice with width y where x is 5 times as large as y. a) Define a function h that determines the volume of the cake before Janet makes...
*Wednesday, October 8, 2014 at 8:49pm*

**Physics**

A rock is thrown downward from an unknown height above the ground with an initial speed of 28 m/s. It strikes the ground 4.4 s later. Determine the initial height of the rock above the ground. The acceleration of gravity is 9.8 m/s 2 . Answer in units of m 014 10.0 points An ...
*Wednesday, October 8, 2014 at 8:21pm*

**physica**

A small first-aid kit is dropped by a rock climber who is descending steadily at 1.3 m/s. After 4.0 s, what is the velocity of the first-aid kit? The acceleration of gravity is 9.81 m/s 2 . Answer in units of m/s 012 (part 2 of 2) 10.0 points How far is the kit below the ...
*Wednesday, October 8, 2014 at 8:21pm*

**sociology**

Micah is studying child behavior in playgrounds throughout the world. He wants to see how the children react when teachers select the same child to be the first to use each piece of equipment. Which approach is Micah is using?
*Wednesday, October 8, 2014 at 8:09pm*

**physics **

The lion first runs 200 yards at 20 deg. south of west, then 300 yards at 40 deg. west of north, and finally 400 yards at 10 deg east of north at which point it catches up to the deer. How far from the starting point, and in what direction is the point where the lion and the ...
*Wednesday, October 8, 2014 at 7:53pm*

**Math: Finance**

Need help solving these finance questions? PV = C/r PV= C/r-g P= D/r-g 1st: Tom is 30 years old today. His salary next year will be $20,000. He forecasts salary growth of 5%/year and plans to retire at 60. 1) If the discount rate is 8%, what is the PV of his future salary ...
*Wednesday, October 8, 2014 at 7:29pm*

**physics**

In the figure, a frictionless roller coaster car of mass m = 938 kg tops the first hill with speed v0 = 14.9 m/s at height h = 31.5 m. How much work does the gravitational force do on the car from that point to (a) point A, (b) point B, and (c) point C? If the gravitational ...
*Wednesday, October 8, 2014 at 7:17pm*

**math**

There are 18 boys and 60 girls working on a community service project. They work in groups where each group has the same number of boys and the same number of girls. Q1: What is the first step to finding the greatest number of groups possible? A. Multiply 18 times 60 B. Divide...
*Wednesday, October 8, 2014 at 2:41pm*

**math**

four monkeys, ann, bob, carl, don set off to gather bananas. after collecting their bananas, they felt tired and fell asleep. ann woke up first and ate 1/3 of the bananas. bob woke up next and ate 1/3 of the remaining bananas. then carl woke up and ate 1/3 of the remaining ...
*Wednesday, October 8, 2014 at 2:26pm*

**SCIENCE**

how is newton's first law used in everyday situations
*Wednesday, October 8, 2014 at 1:37pm*

**Reading**

I would like someone to revise this for me. Thanks! *** **** 10/5/14 Ever since I can remember I have lived in Philadelphia. I have many nice memories from Philadelphia, and I am fortunate enough to have a relatively normal life without having to experience pain of suffering. ...
*Wednesday, October 8, 2014 at 10:36am*

**alkali mixtur titration**

why phenolphthalein is added first then methyl orange in alkali mixtur titration
*Wednesday, October 8, 2014 at 10:01am*

**Statistics**

In a sophisticated medicine research center, two scales are used for repeated weighing of the same item. If the true weight of a compound is 2 grams [g], the first scale produces readings X that have a mean 2.0 g and standard deviation 0.03 g. The second scale’s readings ...
*Wednesday, October 8, 2014 at 2:18am*

**Math**

1. Find the value of k so that 2, k^2, 8 form a geometric sequence. 2. Water is leaking from a water tower. On the first day, two gallons were lost. The leak is getting progressively worse and the amount of water lost triples each day. How many gallons would be lost on the 8th...
*Tuesday, October 7, 2014 at 9:33pm*

**Math**

1. Find the common ratio and the 7th term of the sequence 2/9, 2/3, 2, 6, 18, ..... 2. The 3rd and 5th terms of a geometric sequence are 2 and 1/2 respectively. What is the first term? 3. Find the geometric mean between: a. 1/2 and 1/3 b. sqrt5 - sqrt2
*Tuesday, October 7, 2014 at 9:31pm*

**reading**

we all know that babies make funny sounds. Little by little, babies learn that some sounds will call their mother and father. Other sounds will get them food. yet some sounds will bring them nothing at all. Babies learn to talk by finding out which sounds work best. The story ...
*Tuesday, October 7, 2014 at 9:30pm*

**Health**

1. If you're aerobically fit, you can A. run a marathon without experiencing fatigue. B. quit your normal exercise routine without any negative effects. C. sustain a regular routine of exercise for 30-60 minutes with minimal fatigue. D. lift very heavy weights without ...
*Tuesday, October 7, 2014 at 6:58pm*

**com 200**

All of the following are true of what typically occurs when first meeting someone EXCEPT:
*Tuesday, October 7, 2014 at 1:30pm*

**Language Arts**

Hello everyone! I was just wondering if you could revise this autobiographical essay for me? Thanks for your time! *** **** 10/5/14 Ever since I can remember I have lived in Philadelphia. I have many nice memories from Philadelphia, and I am fortunate enough to have a ...
*Tuesday, October 7, 2014 at 1:18pm*

**Chemistry**

What is the enthalpy change for the first reaction? Fe2O3(s) → 2Fe(s) + 3/2O2(g) ΔH = 4Fe(s) + 3O2(g) → 2Fe2O3 (s) ΔH = -1,652 kJ I think I'm supposed to rearrange the equation and double everything but enthalpy isn't my strong suit
*Tuesday, October 7, 2014 at 12:19pm*

**Calculus**

Suppose that two boats leave a dock at different times. One heads due north, the other due east. Find the rate at which the distance between the boats is changing when the first boat is 56 miles from the dock traveling at a speed of 35 miles per hour and the second boat is 20 ...
*Tuesday, October 7, 2014 at 11:36am*

**Grammar**

What is the correct pronoun for each sentence? 1. The first girl chosen was (she,her). 2. He treasure hunters, (he and her, he and she), were interviewed by reporters. 3. Mike and (she,her) are leaving tomorrow. 4. Lebron and (he, him) have been inseparable since third grade. ...
*Tuesday, October 7, 2014 at 1:13am*

**World History (Ms. Sue)**

This is my finished paper. Please, give me your honest opinion. I don't have very much confidence in my writing this time. Do you agree with that which I have written? Should I make any improvements or revise anything? Does it all make sense? List the principles of the ...
*Monday, October 6, 2014 at 10:57pm*

**World History (Ms. Sue)**

I've only written the first half of this paper, but I want your opinion. List the principles of the Magna Carta, the English Bill of Rights, the American Declaration of Independence, the French Declaration of the Rights of Man and the Citizen, and the U.S. Bill of Rights. ...
*Monday, October 6, 2014 at 10:25pm*

**Math**

You have a 5/16 in. drill bit. Will it drill a hole large enough to fit a 5 mm bolt? Show two different ways to answer this question. Explain your thinking. I couldn't even figure out the first way. Please help!
*Monday, October 6, 2014 at 10:24pm*

**College Physics**

Col. John Stapp led the U.S. Air Force Aero Medical Laboratory's research into the effects of higher accelerations. On Stapp's final sled run, the sled reached a speed of 284.4 m/s (632 mi/h) and then stopped with the aid of water brakes in 1.4 s. Stapp was barely ...
*Monday, October 6, 2014 at 8:58pm*

**ART! URGENT**

What shold an artist do first in order to draw a two-point perspective image? A. Use orthogonal lines. B. Use value changes C. Draw all vertical lines D. Draw a horisan line C?
*Monday, October 6, 2014 at 8:38pm*

**AP Calc**

Find the equation of ALL horizontal tangents to the curve y^2=x^2+4/x, if any exists. My work: Derivative- First I multiply across and got x^2+4=xy^2 2x+0=(x)(2y(dy/dx)+(y^2) 2x-y^2=2xy(dy/dx) dy/dx=2x-y^2/2xy=x-y^2/xy I don't know what to do next... Can you help me? ...
*Monday, October 6, 2014 at 8:15pm*

**Math **

Find the coordinatesof the point on the curve xy=10 in the first quadrant such that the normal line passes through the orgin. My work: Okay i believe this is an inverse variation. Therefore, y=10/x? Origin is @ (0,0) and i'm stuck to move on...
*Monday, October 6, 2014 at 6:50pm*

**Algebra**

Find all points on the x-axis that are 10 units from the point (7, 6). (Hint: First write the distance formula with (7, 6) as one of the points and (x, 0) as the other point.)
*Monday, October 6, 2014 at 12:26pm*

**Math**

Which term would best describe the following scenario? Vivian solved an equation. She showed all her steps and got the correct answer. What kind of reasoning did Vivian use to solve the equation? A- convenient B- inductive C- predictive D- deductive My choice is D. Which term ...
*Sunday, October 5, 2014 at 9:35pm*

**Micro-Economics**

Suppose that the government imposes a tax on heating oil. 1. Would the deadweight loss from this tax likely be greater in the first year after it is imposed or in the fifth year? 2. Would the revenue collected from this tax likely be greater in the first year after it is ...
*Sunday, October 5, 2014 at 6:10pm*