Tuesday
September 16, 2014

Posts by liz


Total # Posts: 1,155

physics
A horizontal force of 20 N acted on a 10 kg mass at rest. The force accelerated the mass over a rough surface so that the mass had a speed of 6.0 m/s after 5.0 seconds. How much friction was acting on the mass?
October 15, 2010

precalculus
Find the dimensions of a square cardboard box (open top) that holds 100 cubic inches and is 4 inches deep?
October 14, 2010

college pre-calc
how do you know if there are holes in a rational function?
October 13, 2010

Physics Help!!
Three identical masses of 500 kg each are placed on the x axis. One mass is at x_1 = -11.0 cm, one is at the origin, and one is at x_2 = 37.0 cm. What is the magnitude of the net gravitational force F_grav on the mass at the origin due to the other two masses? Take the ...
October 11, 2010

physics
a patrol of timing paths each vehicle needs to travel the first half of the distance at a speed of 140 km / h. if the speed limit is 80km / h. which should be the highest average speed of the car in the second half of the section, to avoid being fined?
October 10, 2010

physics
a car crosses the street ABC. the segment AB = average speed of 60km / h for 2 hours, the length BC = average speed of 90km / h for 1 h. the average speed of car travel in AC is? the route is a straight line
October 10, 2010

business math
How long, to the nearest year, will it take an investment to triple if it is continuously compounded at 16% per year?
October 9, 2010

math
After several drinks, a person has a blood alcohol level of 200 mg/dL (milligrams per deciliter). If the amount of alcohol in the blood decays exponentially, with one fourth being removed every hour, find the person's blood alcohol level after 2 hours.
October 9, 2010

math
A bacteria culture starts with 1,000 bacteria and doubles in size every 2 hours. Find an exponential model for the size of the culture as a function of time t in hours. f(t) = 1
October 9, 2010

Physics Help!!
Suppose the kinetic energy of an object moving is 15 J and the potential energy is 25 J at some point in time. Then I measure the potential energy some time later and find it to be 10 J. What is the new kinetic energy?
October 8, 2010

chemistry
I think I'm doing the same lab as you. So what I did was find the new concentration of nitric acid in the solution (because by adding it to water, you've just diluted ur concentration). I got .167. Since nitric acid is a strong acid, it dissociates completely, right? ...
October 8, 2010

college
f(x) = 4 e**(5 x); f(x)=A b**x
October 8, 2010

math
After several drinks, a person has a blood alcohol level of 200 mg/dL (milligrams per deciliter). If the amount of alcohol in the blood decays exponentially, with one fourth being removed every hour, find the person's blood alcohol level after 2 hours.
October 8, 2010

math
After several drinks, a person has a blood alcohol level of 200 mg/dL (milligrams per deciliter). If the amount of alcohol in the blood decays exponentially, with one fourth being removed every hour, find the person's blood alcohol level after 2 hours.
October 7, 2010

math
if AX= kX k belongs to real numbers A=|4 -2| X=|x| |-2 4| |y| and x is not equal to cero, and cero is not equal to y, find k
October 7, 2010

physics
if AX = kX, k belongs to reals where A=|4 -2| <-(is a matrix) X=|x|<-(matrix) |-2 4| |y| and x is not equal to cero, cero is not equal to y, find k
October 7, 2010

math
Use exponential regression to model the price P(t) as a function of time t since 1994. Include a sketch of the points and the regression curve. (Round the coefficients to 3 decimal places.)
October 7, 2010

math
After several drinks, a person has a blood alcohol level of 200 mg/dL (milligrams per deciliter). If the amount of alcohol in the blood decays exponentially, with one fourth being removed every hour, find the person's blood alcohol level after 2 hours.
October 7, 2010

physics
for example of the stone dropped from a ballon and striking the ground and taking into account air resistance sketch a) a distance-time graph b) a velocity-time graph c)an acceleration-time graph
October 7, 2010

math
Find equations for exponential functions that pass through the given pair of points. (Round all coefficients to 4 decimal places if necessary.) (-2, 3) and (3, 4)
October 7, 2010

math
After several drinks, a person has a blood alcohol level of 200 mg/dL (milligrams per deciliter). If the amount of alcohol in the blood decays exponentially, with one fourth being removed every hour, find the person's blood alcohol level after 2 hours.
October 7, 2010

math
A bacteria culture starts with 1,000 bacteria and doubles in size every 2 hours. Find an exponential model for the size of the culture as a function of time t in hours.
October 7, 2010

math
Obtain exponential functions in the form f(t) = Aert, if f(t) is the value after t years of a $9,000 investment depreciating continuously at an annual rate of 8.5%. f(t) = 1
October 7, 2010

physics! center of mass
a long non uniform board of length 8 m and mass m = 12 kg is suspended by two ropes if the tensions in the ropes are mg/3 (on left) and 2mg/3 (on right) what is the location of the board's center of mass thank you!
October 7, 2010

physics! center of mass
a long non uniform board of length 8 m and mass m = 12 kg is suspended by two ropes if the tensions in the ropes are mg/3 (on left) and 2mg/3 (on right) what is the location of the board's center of mass thank you!
October 7, 2010

langauge arts
PASSAGE: How did one village bring disaster on itself? On a morning in early spring, 1873, the people of Oberfest left their houses and took refuge in the town hall. No one knows why precisely. A number of rumors had raced through the town during recent weeks, were passed on ...
October 4, 2010

chemistry(FSU)
3 is right! Thank you!! But how'd you get the answer?
October 2, 2010

Math
Im still confused. Wouldnt each side just be 0.33 m then?
September 20, 2010

Math
How would i determine that with only one value?
September 20, 2010

Math
The corners of a square lie on a circle of diameter 0.33 m. Each side of the square has length L. Find L.
September 20, 2010

PHI103: Informal Logic
eating candy will help his daughter improve in areas other than math
September 17, 2010

PHI103: Informal Logic
Barney’s lawsuit against Pinetree Café is unwarranted.
September 17, 2010

math
17 + 1 = 9(s) solve for s 18 = 9(s) s = 2
September 14, 2010

math
what do you divide 83 and 100 with to get to 5/6
September 14, 2010

business hs
positive attitude manners
September 14, 2010

English fallacies
my assignment is to find quotes from thimas jefferson's query 14 and label them according to fallacies and i just dont get it. some quotes include "Comparing them by their faculties of memory, reason, and imagination, it appears to me, that in memory they are equal to...
September 9, 2010

Medical Billing and Coding
Ok thank you This is what I had wrote: Healthcare, as it exists today, is an ever escalating, competitive process whereby providers and institutions thrive financially. If universal health care coverage were made available to all people, the competition among the providers and...
August 29, 2010

Medical Billing and Coding
Explain why the lack of universal health care coverage can raise health care costs.
August 29, 2010

Medical Billing and Coding
I have found the answer thank you to all who helped
August 27, 2010

Medical Billing and Coding
The investigational new drug (IND) application contains which of the following information?
August 27, 2010

12th grade - Math
Explain. 1.) To solve x(x-5)=0 either factor may be equal to zero. 2.) | 8-15i | = 17 3.) The solution for x^2 = -2 cannot be found graphically. [any help or explanation is greatly appreciated]
August 26, 2010

12th grade - Math
Identify the system as consistent, inconsistent or dependent. Explain your choice. 1.) 3x - 2y = 12 6x - 4y = 24 2.) x= -5 y= 4
August 26, 2010

physics
A unit of area often used in measuring land areas is the hectare, defined as 104 m2. An open-pit coal mine consumes 72 hectares of land, down to a depth of 29 m, each year. What volume of earth, in cubic kilometers, is removed in this time?
August 25, 2010

Math
Solve for the indicated variable p I don't know what you do to solve it. A=P+Prt
August 24, 2010

Physics - Uniform circular motion
centripetal acceleration? v^2 / r = ac
August 21, 2010

physics
I actually used that formula and got that answer (35.625 m/s) but does that take into account the speed of the police car? (or is that a red herring)
August 21, 2010

physics
A speeding car is pulling away from a police car. The police car is moving at 30 m/s. The radar gun in the police car emits an electromagnetic wave with a frequency of 20.0 x 10^9 Hz. The wave reflects from the speeding car and returns to the police car where the frequency is ...
August 21, 2010

Physics
A 8.1 kg stone is at rest on a spring. The spring is compressed 12 cm by the stone. The stone is then pushed down an additional 27 cm and released. To what maximum height (in cm) does the stone rise from that position?
August 19, 2010

algebra
Substitute -21 into -x, which gives you -(-21). Two negatives make a positive, therefore -x = 21.
August 19, 2010

math
14 to 49
August 17, 2010

hca/210
What do you see as the purpose of health insurance? Should there be limits on the amount of health care provided? Word count met? If yes, what criteria should we use to ration health care? If no, how should health care be financed so that everyone has access?
August 4, 2010

writing call
In what ways are full-sentence outlines more beneficial than topic outlines? o Explain why it may or may not be simpler to write your paper instead of first creating a full-sentence outline. o What steps will you take to turn your outline into the body of your rough draft?
August 3, 2010

university of phoenix
I need to write a paper on the immigration law SB1070 in one week.
August 3, 2010

essay
I need to see if the paragraph I wrote is Ok?
July 21, 2010

chemistry
An enclosed cylinder has 3 moles of gas with a volume of 60 L and a temperature of 400 K. What is the pressure inside the container? Round to the nearest tenth. Don't forget the units.
July 4, 2010

Chemisrty
If you were balancing a chemical equation that contained the substance sodium nitrate, NaNO3, composed of a sodium ion, Na+1, and a nitrate ion, (NO3)-1, what number or numbers could you change in order to balance the equation?
June 30, 2010

math
Find the measure of angle DBC if the measure of angle ABD is 36 degrees and the measure of angle ABC is 74 degrees.
June 28, 2010

Chemistry
Fe + 2HCl = FeCl2 + H2 A piece of metallic iron (10 moles) was dissolved in concentrated hydrochloric acid. The reaction formed hydrogen gas and iron chloride. How many grams of HCl were consumed? Don't forget the units.
June 27, 2010

Government
#1 is c.) socialism, communisn
June 20, 2010

geometry
Find the Pythagorean triple for m = 14
June 18, 2010

healthcare
list and describe the four steps necessary to establish the proper ICD-9-CM code.
June 17, 2010

proviso
how many grams of Fe2O3 are formed when 16.7g of Fe reacts completely with oxygen?
June 14, 2010

question
who gets to decide if you go to summer school?
June 13, 2010

SOCIAL STUDIES! EMERGENY! HELP NEEDED!
Trade between the two countries is relatively modest when compared to trade with their immediate continental neighbours, but still significant. France is Canada's seventh largest trading partner overall, and the third largest in Europe. Annual bilateral trade between the ...
June 3, 2010

nutrition
If you have ever poured oil into a glass of water, you have seen that these two substances do not mix. Knowing this, how do lipids move through the body so they can be digested and absorbed?
June 1, 2010

statistics
Consider a study in which the population variance estimate based on treatment group of 14 participants is 8, and the population variance estimate based on a control group of 17 individuals is 9. Compute the pooled estimate of population variance.
May 31, 2010

health
Neurology : It organizes the information The nervous system controls all body functions. It receives information from inside and outside the body and then sends out messages to appropriate organs in the body in response to this information. The organs of the body that receive...
May 30, 2010

Biology
It can all so be called Genetic Inheritance I think this is better and shorter
May 30, 2010

Biology
All humans and many other primates can be typed for the ABO blood group. There are four principal types: A, B, AB, and O. There are two antigens and two antibodies that are mostly responsible for the ABO types. The specific combination of these four components determines an ...
May 30, 2010

Finance
Milwaukee Surgical Supplies, Inc., sells on terms of 3/10, net 30. Gross sales for the year are $1,200,000 and the collections department estimates that 30% of the customers pay on the tenth day and take discounts, 40% pay on the thirtieth day, and remaining 30% pay, on ...
May 30, 2010

bus210
As with all Busineses in cluding the University of Phoenix they all have this analysis. A SWOT Analysis is a tool for evaluating the strategic environment of a business or other organization. Developed in the 1960s, the technique was designed to solve problems revealed by a ...
May 30, 2010

science
If the stomach was above the diaphragm, you would have PROBLEMS !!! - Your lungs would press against it, increasing chance of vomiting every time you breathe. The stomach wouldn't be able to expand as much as normal. - You would have trouble breathing. The stomach must ...
May 30, 2010

History
Albrecht Durer, a German painter and printmaker. Durer is generally regarded as the greatest Northern Renaissance artist. His famous paintings have been the subject of extensive analysis and interpretation. His watercolours mark him as one of the first European landscape ...
May 30, 2010

Social Studies
Due to stronger literacy in northern Italy, as well as a larger and wealthier bourgeoisie, Italian humanists were far more widespread and common than their counterparts across the Alps in the north. Northern humanists were few, and were often isolated. Apart from size and ...
May 30, 2010

biology
Sponges are able to reproduce asexually through budding. This is when a small piece of sponge is broken off but is still able to survive and grow into another sponge. Sponges are also able to repair damages to their bodies. These characteristics of sponges are ideal because ...
May 30, 2010

algebra
5x^2=80
May 18, 2010

TRIG
Use the cofunction of a complementary angle. PLEASE HELP ME! tan θ = cot (30° + 5θ)
April 30, 2010

algebra
If the sides of a square are increased by 3 meters, the area becomes 64 meters squared. Find the length of a side of the original square?
April 28, 2010

Algebra
multiply(square root5 +1)(8 square root5 +1)
April 27, 2010

COM/220
This particular DQ is due on Day 3. Please post your response to the following: o How do the writers of this documentary “The Origins of AIDS” organize information to build their argument? o Do they include any counter arguments? Why or why not? o What kinds of ...
April 26, 2010

COM/220
Please post your response to the following: o Identify the thesis statement in the movie “The Origins of AIDS.” o What strategies do the filmmakers use to formulate their argument? o What makes the arguments viable and compelling? 1. Review the documentary entitled...
April 26, 2010

Algebra
solve and graph each function: 2x = 3y y = 2x + 4
April 24, 2010

Algebra
How do you solve and graph these equations? y = 4x + 5 x - 2y = 4
April 24, 2010

Algebra II
A math book said that the answer to (1 + 1/n) to the nth power was 2.5 when n=1. It seems like the wrong answer to me and that the answer should be 2. Please let me know if I am right or explain if I am wrong.
April 17, 2010

Statistics
Can a hypothesis test yield a statistically significant (say p<=0.05), yet practically meaningless result? Give an example of how this might happen. Could someone please explain this to me so I will understand it in simple terms.
April 7, 2010

Algebra
5(r-9)+3>6(r+3)-26 {r/r_____ ______
March 27, 2010

Statistics
How does the law of large numbers affect you as a gambler in a casino? As the owner of the casino? Why do people still patronize casinos? How is the law of large numbers relevant to healthcare studies?
March 27, 2010

scientist
Which of the following factors does not help predict future oil production?
March 24, 2010

Social Studies
What was the main difference between the Hudson Bay Company and the Northwest Company in terms of the way their businesses were structured?
March 21, 2010

Algebra
Solve by the elimination method 2r-5s=1 5r+2s=46 The solution is _______, or there are infinitely many solutions, or there is no solution
March 21, 2010

Algebra
Solve by the substitution method 9x+8y=-5 x=40-9y The solution is _______ or there is no solution
March 21, 2010

history
show how the ideas of the competing political positions on the creation of the new national government continued down to at least the time of the civil war.
March 16, 2010

ethics
I agree with amanda. if you are not going to help answer peoples questions (which is what this site is for) then keep you thoughts to yourself. You are making yourself sound ignorant. Axia is a real school and we earn real degrees which is more than likely a lot more than you ...
March 15, 2010

Algebra
41-(2x+4)< or + to 2(x+1)+x Use set-builder notation to describe the complete solution. {x/x__ __}
March 15, 2010

another rotation
A hollow cylinder (hoop) is rolling on a horizontal surface at speed v = 1.85 m/s when it reaches a 23.5° incline.How far up the incline will it go? How long will it be on the incline before it arrives back at the bottom? Again, I am so confused about these problems and ...
March 11, 2010

physics rotations-please help
Two masses, mA = 35.0 kg and mB = 42.0 kg, are connected by a rope that hangs over a pulley (as in the figure). The pulley is a uniform cylinder of radius 0.50 m and mass 4.8 kg. Initially mA is on the ground and mB rests 2.5 m above the ground. If the system is released, use ...
March 11, 2010

Math
In 1920, the record for a certain race was 46.6 sec. In 1980, it was 45.4 sec. Let R(t)= the record in the race and t = the number of years snce 1920. a) Find a linear function that fits the data R(t) = b) Use the function in (a) to predict the record in 2003 and in 2006. 2003...
March 11, 2010

Math
The function W(d) = 0.112d approximates the amount in centimeters of water that results from d cm of snow melting. find the amount of water that results from snow melting from depts of 15cm, 26 cm, 70 cm
March 11, 2010

Math
In 1920, the record for a certain race was 46.6 sec. In 1980, it was 45.4 sec. Let R(t)= the record in the race and t = the number of years snce 1920. a) Find a linear function that fits the data R(t) = b) Use the function in (a) to predict the record in 2003 and in 2006. 2003...
March 11, 2010

Math
Write an equation of the line containing the given point and parellel to the given line. (2,-6); 9x-5y=4
March 11, 2010

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