Tuesday

April 28, 2015

April 28, 2015

Total # Posts: 1,395

**Math**

Solve the system using any algebraic method. 2x - 2y + z = 3 5y - z = -31 x + 3y + 2z = -21 ______________________ The answer I got for this is ( -26, 6,67) but I know its wrong and I don't know why. Help please >< my work is at the bottom I used substitution method ...
*November 1, 2011*

**chemistry**

You need to make an aqueous solution of 0.121 M magnesium chloride for an experiment in lab, using a 250 mL volumetric flask. How much solid magnesium chloride should you add ?
*October 29, 2011*

**Math**

Sally wants to buy her friend a bouquet for his birthday. She wants it to contain both carnations and roses. She has $25.20 to spend. Carnatinos cost $1.45 each and roses cost $2.35 each. Use a graph to show the possible combinations of numbers of carnations and roses Sally ...
*October 27, 2011*

**Math**

Tile Pattern... A design starts with 1 tile and it continues to grow the next day to 4 tiles and on the third day there is 13 tiles. How many tiles will there be on the 10th day? How many tiles on the 50th day? Find a formula for any number?
*October 26, 2011*

**Math ( Word Problem )**

Joel sells ice cream cones at the county fair. he has to rent the equipment for $49 and spend $.043 on ingredients for each one. How many ice cream cones must he sells at $1.10 each in order to make a profit? Write an inequality that represents how many ice cream cones must be...
*October 25, 2011*

**calculus**

How do I find the inflection points? f(x)= 2+3x-(x^3) Thank you!!
*October 25, 2011*

**calculus**

Find the local max/min values of f using botht the first and second derivatie test. I can do the first but I am having trouble with the second derivative. f(x)= x/(x^2+4) Help please...Thank you.
*October 25, 2011*

**physics**

I don't understand how to solve :(
*October 25, 2011*

**physics**

A hollow rubber ball with a diameter of 5.57 cm and a mass of 38.9 g is cut in half to make a boat (in a bathtub) for American pennies made after 1982. The mass and volume of an American penny made after 1982 are 2.5 g and 0.36 cm3. How many pennies can be placed in the boat ...
*October 25, 2011*

**Math**

Little Billy was out trick or treating on Halloween. He had gotten a lot of candy and was peering into his bag, when out from behind a tree came Freddy Krueger. Freddy reached into Billy's bag and took half of his candy plus one piece. Within a few steps, Billy encountered...
*October 24, 2011*

**Trick or Treat**

Little Billy was out trick or treating on Halloween. He had gotten a lot of candy and was peering into his bag, when out from behind a tree came Freddy Krueger. Freddy reached into Billy's bag and took half of his candy plus one piece. Within a few steps, Billy encountered...
*October 24, 2011*

**PC Basics **

Jill wants to organize information into tables, figures, fields, and records. What type of software should Jill use? A. Communications C. Database B. Presentation D. Word processing I think the answer is C
*October 18, 2011*

**Keyboarding and Word Processing **

When typing personal titles in correspondence, you should always include the person’s name if you know it. If you don’t know the person’s name, which of the following should you use? A. Sir or Ma’am B. To whom it may concern C. Ladies and Gentlemen D. Mr. ...
*October 18, 2011*

**Physics**

An airplane flying horizontally at a constant speed of 350 km/h over level ground releases a bundle of food supplies. Ignore the effect of the air on the bundle. a)What is the bundle’s initial vertical component of velocity? =0 b)What is the bundle’s initial ...
*October 16, 2011*

**Physics**

A 45 kg boy running at 3 meters per second jumps on to a 97 kg sled that is initially at rest. Find the resulting speed of the sled with the boy aboard.
*October 16, 2011*

**Drama**

The ability of writers to completely identify with their characters is A. hypocrisy. B. ambiguity. C. negative capability. D. satire.
*October 15, 2011*

**nonfiction**

Thoreau writes that people should be "mining themselves for gold." By this he is stating, in another way, the ideal of Socrates, which was to A. know thyself. B. deny thyself to learn what is valuable. C. live and let live. D. put first things first
*October 15, 2011*

**Poetry **

Beyond tone, a poet's attitude toward his or her subject reveals to us a poem's A. subject. B. structure. C. diction. D. theme.
*October 15, 2011*

**math**

What is the mass of a liter of gasoline if its density is 0.66 g/mL?
*October 14, 2011*

**Literature POETRY, PART 1**

Which one of the following lines best illustrates personification? A. A narrow wind complains all day. B. The fog comes on little cat feet. C. She floated graceful as a dove. D. Spring is a dream unsung.
*October 13, 2011*

**Literature the novel**

The death of Curly is an example of A. the will to power. B. the theory of evolution. C. the law of club and fang. D. racial unconsciousness.
*October 12, 2011*

**Read My Mind Word Problem**

I am thinking of a three-digit number. It is an odd multiple of three, and the product of its digits is 24. It is larger than 15 squared. What are all the numbers that I could be thinking of?
*October 11, 2011*

**Growing Puppies Word Problem/ Need Help Solving**

Chritian's Chihuaha, Princess, weighs 2 pounds. Molly's Pit Bull, Psycho, weighs 14 pounds. They each seem to be gaining about a pound a month. The Pit Bull will soon weigh three times more than the Chihuahua. How many pounds will Princess weigh then?
*October 11, 2011*

**POW#4 Read MY Mind**

I am thinking of a three-digit number. It is an odd multiple of three, and the product of its digits is 24. It is larger than 15 squared. What are all the numbers that I could be thinking of?
*October 10, 2011*

**Algebra POW HELP!!!!!**

The cost of renting a bus to go snowboarding was split evenly by the 20 students planning to go. The day before the trip, 10 more students decided to go. Dividing the cost evenly among all 30 students brought the average cost down by $9.00 per person. What was the total cost ...
*October 6, 2011*

**Calculus**

Here is the other. Thank you! A kite 100 ft above the ground moves horizontally at a speed of 8 ft/s. At what rate is the angle between the string and the horizontal decreasing when 200 ft of string has been let out?
*October 5, 2011*

**Calculus**

If any body can solve this I would be greatly appreciative. I spent an hour in the tutoring center and no one could solve. Here goes: A spotlight on the ground shines on a wall 12 m away. If a man 2 m tall walks from the spotlight toward the building at a speed of 1.6 m/s, how...
*October 5, 2011*

**Word Problem Help Please**

The cost of renting a bus to go snowboarding was split evenly by the 20 students planning to go. The day before the trip, 10 more students decided to go. Dividing the cost evenly among all 30 students brought the average cost down by $9.00 per person. What was the total cost ...
*October 5, 2011*

**Algebra Splitting the Cost**

The cost of renting a bus to go snowboarding was split evenly by the 20 students planning to go. The day before the trip, 10 more students decided to go. Dividing the cost evenly among all 30 students brought the average cost down by $9.00 per person. What was the total cost ...
*October 5, 2011*

**Algebra word problem/Splitting the Cost**

So what is the first step in figuring it out????
*October 5, 2011*

**Algebra word problem/Splitting the Cost**

There has to be an initial step because first there was 20 students
*October 5, 2011*

**Algebra word problem/Splitting the Cost**

The cost of renting a bus to go snowboarding was split evenly by the 20 students planning to go. The day before the trip, 10 more students decided to go. Dividing the cost evenly among all 30 students brought the average cost down by $9.00 per person. What was the total cost ...
*October 5, 2011*

**Algebra word problem**

There are 50 questions to answer in a triva contest. Each player starts with 100 points. He or she earns ten points for each correct answer but will lose four points for each incorrect answer. Each player must answer all 50 questions. What is the fewest number of questions a ...
*October 5, 2011*

**Calculus**

Find dy/dx by implicit differentiation: x^2-2xy+y^3 = c Thank you!
*October 4, 2011*

**chemistry**

The total number of atoms in 0.111 mol of FeCO3(PH3)2...?
*October 3, 2011*

**Math 103**

Write the set of points from -5 to 1 but excluding -4 and 1 as a union of intervals
*September 29, 2011*

**Calculus**

I think I have the correct answers for the following problems. For anyone who has the time I would appreciate it if you could tell me if I am correct/incorrect. Thank you. 1). Differentiate ã(x)sin x = (2xcosx+sinx)/2ã(x) 2). Differentiate 2t/(4+t^2...
*September 25, 2011*

**math**

f(-0.7)=-0.7^5-4(-0.7^4)-7(-0.7^2)-6(-0.7) = -.35847 f(-0.6)= substitue -0.6 in the equation = .48384 Assuming that f(x)= x^5 - 4x^4- 7x^2 - 6x = 0 Then solution would be -.35847 < 0 < .48384
*September 25, 2011*

**Algebra**

Rewrite one of the equations and plug into another equation and solve for each variable: (x + 2y = 12) = (x = 12-2y) plug x in (x+6y+z=20) = (12-2y+6y+z =20) is equal to (4y+z=8) rewrite (4y+z=8) and you get (z=8-4y). plug z in (3y-4z=25) solve and you get y=3. now you have ...
*September 25, 2011*

**art history**

Even though the art in the Renaissance and Baroque periods was not totally religiously oriented as had been the case before 1400, there was still much artistic effort put forth toward the creation of beautiful religious pieces. Explain why this influence continued through ...
*September 24, 2011*

**Physics...Help please**

The problem is from fundamentals of physics 9th edition by halliday. Here is a free download of the book since I couldn't post the graph (I had to write out link since site doesn't allow links to be posted): tripplew period sendspace period com/file/shrz0x I am having ...
*September 23, 2011*

**Mat126: Survery of Mathematics**

Create a math formula showing that if 71% of adult use sunscreen and 71% is a large number how many use or do not use sunscreen?
*September 19, 2011*

**math**

if u received 2 dozen items and sold three of those items the first day, how many of those items are left?
*September 19, 2011*

**Physics - HELP! PLEASE**

The problem is from fundamentals of physics 9th edition by halliday. Here is a free download of the book since I couldn't post the graph (I had to write out link since site doesn't allow links to be posted): tripplew period sendspace period com/file/shrz0x I am having ...
*September 18, 2011*

**Physics**

Per the figure ( I was unable to post), the graph is a linear line, it doesn't mention that acceleration is constant.
*September 18, 2011*

**Physics**

Figure 2-41 gives the acceleration a versus time t for a particle moving along an x axis. The a-axis scale is set by as = 13.0 m/s2. At t = -2.0 s, the particle's velocity is 10.0 m/s. What is its velocity at t = 6.0 s?
*September 18, 2011*

**math**

earth diameter is 13000 kilometers, globe diameter of0.5 meter, what is the globes scale as a ratio. What distance on Earth would 1 cm on the globe represent?
*September 14, 2011*

**Algebra**

Solve for y x-2xy=1
*September 13, 2011*

**Algebra**

F=9/5C+32 Solve for C if someone could explain in a step by step way that would be great!
*September 11, 2011*

**Psychology**

Why is problem solving considered the highest level of mental activity? What makes an individual good at problem solving?
*September 10, 2011*

**arithmetic**

thank you
*September 8, 2011*

**arithmetic**

What is the circumference of a circle with a radius of 9inches? (-2nr)
*September 8, 2011*

**Math**

yes that feels like the correct one. math and music go together.
*September 7, 2011*

**Algebra**

Questions on piecewise function graphing Obviously I can't get help with the actual graphing here but I am hoping someone can push me in the right direction Problem: f(x) {4, if 0<=x<2} {5, if 2<=x<4} {6, if 4<=x<6} So how would I get started? What does ...
*September 6, 2011*

**Algebra**

How do I graph how to raph -y>=4/3 (greater than or equal to) I don't understand what to do when the y is negative Any help would be greatly appreciated :)
*September 5, 2011*

**Psychology**

Why would you consider encoding messages into linguistic form as the most important step?
*September 5, 2011*

**Psychology**

What are the stages of language production? Which one of these stages is the most crucial? Why? This is what I have thus far: Language production refers to the process involved in creating and expressing meaning through language. The four stages in language production are ...
*September 5, 2011*

**English**

What do you think of the revised paragraph? I really changed the whole paragraph, is it better?
*September 1, 2011*

**English**

oops! First off thankyou!
*September 1, 2011*

**English**

First of thankyou! I appreciate your input. I rewrote a different paragraph. During my online research, I was very excited to learn about the current opening for a medical coding position in your organization. I feel my qualifications and your requirements are a good match. I ...
*September 1, 2011*

**English**

I have a writing project. I would like advice from you. This is the assignment. "You've applied for a specific job in your field of study. The Human Resources Department arranges an interview and tells you to bring with you a polished piece of writing for them to ...
*September 1, 2011*

**finance**

well, the answer came out in ics as $104,480.00 but as i figured it 100,000/1000=100x5.68 so 5.68x360=204,480.00-100000.00=$104,480.00 that was i got but see is the 20% figured in that figure?
*August 31, 2011*

**geometry**

The perimeter of a pentagon (4x + 4) is three times the perimeter of a triangle (x + 3). Using this statement, find x.
*August 31, 2011*

**science**

what is the proton if atomic number is 6 and atomic mass is 12
*August 30, 2011*

**business mathmatics**

the total amount on a loan of 6,000 for 150 days is 210.50. using the ordinary interest metnod. what is the rate on this loan? rounded to nearest hundredeth.
*August 30, 2011*

**Algebra**

Graph the relation then tell whether the relation is a function The coordinates are: (0,-4), (0,4), (2,-3), (2,3). (4,-1) (4,1) After I graphed it I found that two of the point were on the y-axis so does that mean it is not a function? I might be getting it backwards though. ...
*August 29, 2011*

**History**

Oh and that was supposed to be VP
*August 28, 2011*

**History**

How did Pp Dick Cheney's net worth change after he left his position as secretary of defense under Reagan-Bush but before he became VP? Who employed him? Any information regarding his net worth over time and who employed him over the years would be most helpful.
*August 28, 2011*

**History**

Can someone give me a few examples of economic factors/conditions determining foreign policy decisions. The one example I have so far is the economic crash in 2008 triggering a outcry for economic relief. People no longer cared about the iraq war.
*August 28, 2011*

**Algebra**

|3x+8|=20; -4 Basically that 4 is asking whether that is a possible solution to the problem. I tried to solve it and the two solutions I got were -28/3 and 4. So I got that -4 is not a solution but if someone could check for me and make sure I didn't mess up my signs that ...
*August 27, 2011*

**ACCOUNTING**

On July 1, 2011 you purchase and pay $36,000 for a three year insurance policy. How much will your insurance expense be this year and during the following three years under the cash and accrual basis methods? At December 31 of each year, how much will Pre-Paid Insurance be on ...
*August 26, 2011*

**Finance**

shawn bought a home for $100,000. he put 20% down and obtained a mortguage for 30 years at 5 1/2%. what is the total cost of the loan? can you show me how this is worked out?
*August 26, 2011*

**Statistics**

4. John sells ice cream bars at the local park. He buys the bars for $1.20 per dozen and sells them for $0.15 each. If it is a rainy day at the park, he can sell nothing; if is overcast, he sells one dezen bars; and if is sunny, he sells two dozen. He can return unsold bars, ...
*August 25, 2011*

**Statistics**

4. John sells ice cream bars at the local park. He buys the bars for $1.20 per dozen and sells them for $0.15 each. If it is a rainy day at the park, he can sell nothing; if is overcast, he sells one dezen bars; and if is sunny, he sells two dozen. He can return unsold bars, ...
*August 25, 2011*

**Statistics**

Please help!!! 3. A one-legged, red-nosed tramp approaches John in the park and tells him he can predict the next day’s weather perfectly after he has drunk a shot of “Ripple” wine (cost of one shot: $0.50). If the tramp is telling the truth, should John engage ...
*August 25, 2011*

**math**

how do you calculate the distance and speed of a motorcycle that is going to jump 4 cars
*August 24, 2011*

**geometry**

What is the area of a trapezoid with bases of 2inches and 4 inches and a height of 3 inches
*August 8, 2011*

**algebra**

The total revenue R in dollars from selling tops for P dollars each is given by R= p(200-9) where p< or = 200. a) Find R when P = $200 Find P when R = $7500
*July 28, 2011*

**Psychology**

I need help in developing an outline to explain the utility of social psychology within education so I can use as a guide to write a paper. I need to focus on both theory and application. PLEASE HELP!
*July 23, 2011*

**Psychology**

I have expanded on my answer and would like to know if this is correct and if anything else should be added. Answer: Bias can distort self-perception and causal attribution. The fundamental attribution error describes the tendency by one person to over-value personality based ...
*July 22, 2011*

**Psychology**

I have to describe the impact of bias on the lives of individuals. I know that bias can distort self-perception and causal attribution. I need help to properly explain this.
*July 22, 2011*

**Psychology**

Yes.
*July 21, 2011*

**Psychology**

I think that bias can distort self-perception and causal attribution.
*July 21, 2011*

**Psychology**

What is the impact of bias on individuals?
*July 21, 2011*

**Algebra**

-4x^3 + 24x^2 – 24x + 4 by x^2 – 5x + 1
*July 20, 2011*

**Analytical Chemistry**

How do I find the mass of KHP? 0.5050 grams of KHP was used and placed into a 250mL volumetric flask and diluted to the mark with distilled water. 50.00mL of this KHP solution was placed in a 250mL beaker. It took 14.75mL of 0.0067M of NaOH to reach the endpoint. What is the ...
*July 20, 2011*

**Amortized Loan**

What is the interest payment on $16,000 at 5% interest amortized over 16 months with $1,000 payment per month
*July 18, 2011*

**Math**

what is $16,000 at 5% interest amortized over 16 months
*July 18, 2011*

**principal of management**

what you feel are the three most important concept you learned in principal of management
*July 9, 2011*

**algebra**

If you reach a city on interstate and vehicle can travel on 32 mpg. write an inequality that shows the mile makers (m)you can reach from city at mile marker 125 going in either direction,when g is the amount of fuel , in gallons, in your vehicle. explain what this means (east ...
*July 7, 2011*

**Psychology**

In what ways are personology and attribution theory related?
*July 6, 2011*

**Health**

Does prevalence of disease increase as chronic disease increases. Prevalence is total no. of cases/total no. of risk factors of disease in the population over a period of time.
*July 6, 2011*

**chemistry**

what would happen if you used a very small amount of metal in measuring density? how would it affect your measurement? consider the number of segnificant digit in your ansuer if you use more than 1.00 ml of metal or less than 1.00 ml of metal.
*July 5, 2011*

**chemistry**

can you do it for me if possible drbob222 ?
*June 30, 2011*

**chemistry**

i have the Mr of lead nitrate 331 and i thermally decompose it giving nitrogen dioxide and oxygen. i want to collect exactly 200cm3 of the gases evolved in a syringe. what mass of lead nitrate should i take ?
*June 30, 2011*

**Comm health**

Compare public health and community health. What is the history of public health?
*June 24, 2011*

**Community/public health**

Comparing public and community health What is the difference History of Dekalb public Health
*June 23, 2011*

**Public & Community Health**

Why is local and international water assessment necessary to prevent diseases?
*June 20, 2011*

**public & community health**

Why is it important for public health to have a strategic disaster management plan in place?
*June 20, 2011*

**PHYSICAL SCIENCE**

BY HOW MANY DEGREES OF CELSIUS WOULD THE TEMPERATURE OF 100 GALLONS OF WATER INCREASE IF 300 CALORIES WERE ADDED TO IT?
*June 18, 2011*