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August 22, 2014

Posts by tim


Total # Posts: 939

Math
Why does the inequality sign change when both sides are multiplied or divided by a negative number? Does this happen with equations? Why or why not?
April 27, 2010

MATH
77z
April 26, 2010

MATH
Use multiplying by one to find an expression equivalent to 12/11 with a denominator of 77z. I have an entire worksheet of problems like this. Could someone please explain to me how to complete this type of problem.
April 26, 2010

Algebra2
I can't get the right answer to this problem...what am I doing wrong? (2x-4)(x+1)^2 (2x-4)(x^2+2x+2) 2x^3+4x^2+4x-4x^2-8x-8 2x^3-4x-8 but the answer I'm supposed to get is 2x^3-6x-4 what am I doing wrong? Please help! thanks
April 15, 2010

math estimate areas
estimate areas of parallelogram
April 14, 2010

Chem.
I haven't found any "Really" good ones but this is ok webclass.lakeland.cc.il.us/iali/CHM151Folder/CHM151%20OrgChm.htm
March 31, 2010

Statistics
Normally distributed means that median = mean = mode. Median = 50th percentile. Does that give you answer to a?
March 31, 2010

sms
a. The sales representative informs you that there are 56 houses for sale with two floor plans still available. Use x to represent floor plan one and y to represent floor plan two. Write an equation that illustrates the situation. x + y=56 The sales representative later ...
March 28, 2010

algebra
if e=1/1! + 1/2! + 1/3! ... and i = the sqrt(-1) then C = -(-1)^(3/4) sqrt(e) or (-1)^(3/4) sqrt(e) both being complex numbers
March 27, 2010

Math(Please help)
you get x+4
March 26, 2010

Math
For the graph of (3-x)/(5x+2)^3: is the following information right? x-intercept: (3,0) y-intercept: (0,0.375) vertical asymptote: x= -0.4 horizontal asymptote: y=0 increasing: (4.7, infinity) decreasing: (-infinity, -0.4) (-0.4, 4.7) concave up: (-0.4, 6.4) concave down: (-...
March 26, 2010

physics
the answer is
March 24, 2010

9th grade
Factorizing we get (x+2) (x+10) = 0 so x = -2 or x = -10
March 24, 2010

Math
expanding you will get 9a^4+24a^2+16 check back
March 24, 2010

math
one canned jucie drink is 15% orange jucie; another is 10% orange jucie. How many liters of each should be mixed together in order to get 5L that is 11% orange jucie? How many liter of the 15% orange jucie? how many liters of the 10% orange jucie?
March 21, 2010

art 101
Looking for an in-text citation for impressionism
March 18, 2010

Chemistry II (College)
How would I go about solving this problem? Can someone show me an equation that can be used? The decomposition of dimethyl ether at 504°C is a first-order reaction with a half-life of 27 min. (CH3)2O(g) CH4(g) + H2(g) + CO(g) What will be the total gas pressure after 2.18 ...
March 12, 2010

Chemistry II (College)
How would I go about solving this problem? Can someone show me an equation that can be used? The decomposition of dimethyl ether at 504°C is a first-order reaction with a half-life of 27 min. (CH3)2O(g) CH4(g) + H2(g) + CO(g) What will be the total gas pressure after 2.18 ...
March 12, 2010

Chemistry II (College)
How would I go about solving this problem? Can someone show me an equation that can be used? The decomposition of dimethyl ether at 504°C is a first-order reaction with a half-life of 27 min. (CH3)2O(g) CH4(g) + H2(g) + CO(g) (a) What will be the partial pressure of (CH3)...
March 11, 2010

trig
The captain of a ship at sea sights a lighthouse which is 280 feet tall. The captain measures the the angle of elevation to the top of the lighthouse to be 25. How far is the ship from the base of the lighthouse?
March 10, 2010

trig
huh?
March 10, 2010

trig
A plane is flying at an elevation of 30000 feet. It is within sight of the airport and the pilot finds that the angle of depression to the airport is 18. Find the distance between the plane and the airport. Find the distance between a point on the ground directly below the ...
March 10, 2010

calculus
How do you find the area of the intersection of the circles r=sinx and r=cosx?
March 10, 2010

Physics
A kayaker paddles with a power output of 50.0 W to maintain a steady speed of 1.30 m/s. Calculate the resistive force exerted by the water on the kayak. If the kayaker doubles her power output, and the resistive force due to the water remains the same, by what factor does the ...
March 9, 2010

12th grade
(x-2)(x+2)(x^2+4)= 0 Giving the solutions x= +2;-2;-2i;2i (i being the imaginary unit)
March 7, 2010

Sociology
What are the two social order views (contrasting) in the movie THE ISLAND (cloning)? Can someone explain to me what social order is
March 4, 2010

physics
try reading your book...
March 3, 2010

chemistry
A balloon has a volume of 2.75 liters at 25 degree celcus. What would the balloons volume be if the temperature is raised to 95 degree celcus and the pressure remains constant? please provide steps to get to answer
February 28, 2010

chemistry
If 4.57 grams of AgBr was isolated in a gravimetric analysis of a 9.30 gram sample, what is the % Br- by weight in the samples? please provide steps to get to answer
February 28, 2010

chemistry
when 50.0 ml of 2.00M KOH is reached with 50.0 ml of 2.00M HCl, the temperature rose from 20.0 degree celcus to 28.7 degree celcus. What is the heat generated by this neutralization? (Assume that the density fo the two 2 M solution is 2.00g/ml and that the heat capacity of the...
February 28, 2010

chemistry
I am still confused. If V=155 ml, T=308K, n=?, p= 1.1 atm. How do you get your R.
February 28, 2010

chemistry
How many moles of a gas are in a container with a volume of 155 milliliters at a temperature of 35 degree celcus and a pressure of 1.1 atmoshheres? Please provide steps to get answer
February 28, 2010

chemistry
If 3.51 grams of AgCl was precipitated from an unknown in a gravimetric analysis, how many grams of CL- does this represent? please explain the steps needed to get to the answer.
February 27, 2010

chemistry
Could you provide a little bit more clues i am still confused.
February 26, 2010

chemistry
Calculate the vapor pressure of water over each of the following ethylene glycol C2H6O2 solutions at 80 degree C (vp=pure water=657.6 mm Hg). Ethylene glycol can be assumed to be nonvolatile. (a) X (ethylene glycol)= 0.288 (b) % ethylene glycol by mass =39% (c) 2.42 m ethylene...
February 26, 2010

Chemistry I
a. 41.2% b. 58.8% c. 0.358 moles
February 26, 2010

Chemistry I
Acetone , C3H6), is the main ingredient of nail polish remover. A solution is made up by adding 35.0 ml of acetone (d=0.790g/ml) to 50.0ml of ethyl alchole, C2H6O (d=0.789 g/ml). summing volumes are additive, calculate (a). the mass percent of acetone in the solution. (b). the...
February 26, 2010

grade 12 chem
hi, does anyone know any good websites on practicing reactions of hydrocarbons?
February 24, 2010

grade 12 chem
hi, does anyone know any good websites on practicing reactions of hydrocarbons?
February 24, 2010

grade 12 chem
hi, does anyone know any good websites on practicing reactions of hydrocarbons?
February 24, 2010

Fin
Midland Chemical Co is negotiating a loan from Manhattan Bank and Trust. The small chemical company needs to borrow $500,000. The bank offers a rate of 8¼ percent with a 20 percent compensating balance requirement, or as an alternative, 9¾ percent with additional...
February 13, 2010

Biology
1 Could be the fact that carbon has 4 electrons in it's outer shell therefore bonds easily. 2 Could be that the Oxygen in the last three bonds with water
February 10, 2010

9th grade Algebra
what is the inverse function of g(x)= 3x+2?
February 9, 2010

chemistry
Which of the following has the largest molar mass? A. isopropanol B. Water C. ethanol
February 7, 2010

Physics
is there .136kg for 13.6g.....check that
February 5, 2010

Social Science
What does race and ethnicity mean?
February 2, 2010

physics
A runner traveling with an initial velocity of 3.0 m/s accelerates at a constant rate of 1.7 m/s2 for a time of 3 seconds. What distance does the runner cover during this process?
January 28, 2010

Math
Go to webmath, it's a site on the internet. When you get there click on home and scroll down to complex numbers, multiplying. There you can type in the problem and it will show you step by step how to do this. Your gonna love this site. Take care!
January 27, 2010

Elimination method
Solve by the elimination method. Is there a solution? 2r-5s= -11 5r+2s= 16
January 27, 2010

Algebra
Trains A and B are traveling in the same direction on parallel tracks. Train A is traveling at 40 miles per hour and train B is traveling at 60 miles per hour. Train A passes a station at 5:25 A.M. If train B passes the same station at 5:37 A.M, at what time will train B catch...
January 27, 2010

Math
Yes..thanks. I did that, but now I'm stuck, for some reason, on how to write what the rule for the function would be. The question asked: A freezer's temperature is decreasing at a rate of 5 degrees per hour. When the temperature was first measured, it was 50 degrees. ...
January 21, 2010

Math
I don't understand what the function would be for the following function table: When X is 1/Y=45 When X is 2/Y=40 When X is 3/Y=35 When X is 4/Y=30 When X is 5/Y=25 etc. So what would the function be? I can't get it. Thanks
January 21, 2010

Probability
A card that is not a ten and not a diamond is drawn. (out of an ordinary deck of 52 cards) For some reason, I am not coming up with the right answer. Can you work this out for me.. I keep getting 35/52...but I know that isn't right.
January 18, 2010

Fin 200
The Landis Corporation had 2008 sales of $100 million. The balance sheet items that vary directly with sales and the profit margin are as follows: How do I come up with the percent breakdowns to multiply by - such as 85%, 25% and 6%?
January 17, 2010

Algebra
So then would it be y= -5?
January 17, 2010

Math
I dont even know where or how to start.Im lost on these.
January 17, 2010

Math
Give the equation of a line perpendicular to the line y = 4x having the same y-intercept.
January 17, 2010

Math
Give the equation of the line that passes through point (5, 1) and is parallel to the line y = 3x – 1.
January 17, 2010

Math
Find the other endpoint of a line segment with the given midpoint and one endpoint. Endpoint (6, 4): midpoint (3, 5).
January 17, 2010

Math
A store sells a 1-liter container of juice for 75¢ and a 2-liter container for $1.40. Assume that the cost varies linearly with the number of liters, and find the slope of the line that shows the relationship. How many liters would be in a container that cost $3.35?
January 17, 2010

Tim
A store sells a 1-liter container of juice for 75¢ and a 2-liter container for $1.40. Assume that the cost varies linearly with the number of liters, and find the slope of the line that shows the relationship. How many liters would be in a container that cost $3.35?
January 17, 2010

Math
Solve the quadratic equation using any technique you wish. Name the technique. Check. 12x2 + 10x = 0
January 17, 2010

Math
Solve the linear equation using any technique you have learned. Name the technique. Check. 3x + 12 = -7x - 28
January 17, 2010

Math
State whether the given equation represents a linear, quadratic, or exponential function. Tell how you decided. y = -8x2 + 4
January 17, 2010

Math
Evaluate and tabulate the values of y for the value(s) given. y = 2x3, for x = -3, 0, 1, 4
January 17, 2010

Math
A store sells a 1-liter container of juice for 75¢ and a 2-liter container for $1.40. Assume that the cost varies linearly with the number of liters, and find the slope of the line that shows the relationship. How many liters would be in a container that cost $3.35?
January 17, 2010

math
If each side of a regular pentagon is X2 + 17 and each side of a regular hexagon is x2 + 2x, for what value or values of x will be the perimeters of the figures be equal
January 14, 2010

math
How would you solve this proportion 4/15=x/5
January 11, 2010

math
find the circumference and area of a circle with a diameter of 16 feet
January 10, 2010

religion
What is the relationship between Buddhism and the natural habitat? How does it help guide the modifications of the environment and shape the perception of nature?
January 9, 2010

Math
A study of Hub Furniture regarding the payment of invoices reveals the time from billing until payment is received follows the normal distribution. The mean time until payment is received is 20 days and the standard deviation is 5 days. a. What percent of the invoices are paid...
January 7, 2010

Physics
A vaulter holds a 20.7 N pole in equilibrium by exerting an upward force, U, with his leading hand, and a downward force, D, with his trailing hand. Let L1 = 0.71 m, L2 = 1.5 m, and L3 = 2.21 m. What are the magnitudes of U and D?
January 5, 2010

Physics
A vaulter holds a 20.7 N pole in equilibrium by exerting an upward force, U, with his leading hand, and a downward force, D, with his trailing hand. Let L1 = 0.71 m, L2 = 1.5 m, and L3 = 2.21 m. What are the magnitudes of U and D?
January 5, 2010

Physics
A vaulter holds a 20.7 N pole in equilibrium by exerting an upward force, U, with his leading hand, and a downward force, D, with his trailing hand. Let L1 = 0.71 m, L2 = 1.5 m, and L3 = 2.21 m. What are the magnitudes of U and D?
January 5, 2010

Accounting
Smith Company for the year ended December 31, has $169,000 recorded in the Debit column and $193,434 in the Credit column on the line for the Income Summary account. What were tht beginning and ending balances for Merchandise Inventory?.
January 2, 2010

art
Design elements and principles, have been used by most people for years these basics elements are color, line, shape, texture, and space. Color represents emotion and allows objects to stand out from the background. Lines represent order and give the eye explicit directions ...
January 1, 2010

Data Management
Suppose that the populations of the three species are distributed as shown in the following table. You capture a frog, note its gender and species, and then release it. This process is repeated until you have captured and recorded 50 frogs. Species gen.ratio Species %total pop...
December 17, 2009

Language
What reference source would you use to find the address of the nearest music store?
December 10, 2009

social studies
How did Charlemagne gain the title Emperor of the Roman People from Pope Leo III? A. He inherited it from his father. B. The pope saw his concern for his people in the way he governed. C. He built a very large cathedral in Aachen and earned the pope’s respect. D. He aided...
December 8, 2009

Quoting,Summarizing, and Paraphrasing Sources
How so I write a summary for Gun Control Losing Ground with an in-text citation.
December 6, 2009

Finance
A. $823.15
December 5, 2009

math
Eight pennies are placed in a row on a tabletop. Every other coin is then replaced with a nickel. Every third coin is then replaced with a dime. finally, every fourth coin is replaced with a quarter. what is vaule of the eight coins noe on the table?
December 3, 2009

physics
At what projection angle will the range of a projectile equal to 6 times its maximum height? I know its easy but ive been absent and missed class!
December 2, 2009

Self-esteem Positve or negative response
A family member tells you he or she is disappointed that you have decided not to continue the family tradition of working in the healthcare field. How do you respond?
November 29, 2009

Programming
Actually I have a few questions: How do I create the removeLowest() method if the maximum number of nodes can be up to ten. I seem to be having problems with the toString() method, Any suggestions? Heres my code so far: import java.util.LinkedList; public class GameLinkedList ...
November 26, 2009

Programming
Anyone?
November 26, 2009

Programming
Hey guys, I seem to be having a bit of trouble with my assignement involving linked lists in java. The problem is with creating the node. My professor asks that we create a string and int in the node, but all examples that I have found only use one node. Heres the assignment: ...
November 26, 2009

Calculus
Two people, Paige and Sandy, are racing each other. Assume that both their accelerations are constant, Paige covers the last 1/8 of the race in 5 seconds, and Sandy covers the last 1/5 of the race in 8 seconds. Who wins, and by how much?
November 25, 2009

college algebra
-2/3x+y=2-->y=2+2/3x Then you substitute 2+2/3x for y in the second equation: 2x-3(2+2/3x)=6.
November 25, 2009

English
helping people/volunteer work
November 25, 2009

Hurricanes are very dangerous
could you help me find something that will help me write a paragraph on hurricanes are very dangerous to earth and people causing tremendous devastation.
November 12, 2009

Critical Analysis
how do you identify the principal issue presented by the source.
November 11, 2009

Critical Analysis
why and how could you apply critical thinking when evaluating each of the following? Articles, Advertising, media, and Conversation
November 11, 2009

conceptual physics
if you throw a ball straight upward at a speed of 10 m/s, how long will it take to reach zero speed? how long will take to return to its starting point? how fast will it be going when it returns to its sparting point?
November 11, 2009

Hurricanes
I need help writing a 1700 word essay on hurricanes can you provide help with that subject.
November 11, 2009

Comprehensive grammar
What is the rationale for Subject-verb agreement ;Some athletes have taken drug tests to prove they are not on steroids
November 11, 2009

Essay
I'm writing a essay on Hurricanes where can I find credible sources for my essay with intext citation or citation.
November 11, 2009

Comprehensive grammar
some athletes have taken drug test to prove they are not on steroids. What is the rationale for this?
November 11, 2009

math
What is the second derivative of e^(-1/x)?
November 10, 2009

Math
What is the rate of inflation of an item with a Consumer Price Index of 246.8 in 1991 and 362.4 in 1992? Round your answer to the nearest tenth. I would appreciate any help.
November 10, 2009

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