Questions Asked on
August 18, 2011

math
write an expression to represent each total and then simplify it cost of 2 pens and 3 notebooks the note books costs 179 each nd the pens 289 each
asked by adrian 
SCIENCE
a. An engine has a reservoir of 8000 J and has a sink of 1000 J.i. Find the work generated by the engine.
asked by KAIT 
Math
All of my life I have gotten a C average in math. I have been trying to set a goal to make above a C in math. I don't know why I have trouble with math. Can someone help me?
asked by Aquion 
physics
A passenger train is traveling at 30 m/s when the engineer sees a freight train 357 m ahead of his train traveling in the same direction on the same track. The freight train is moving at a speed of 5.9 m/s. (a) If the reaction time of the engineer is 0.43
asked by laura 
physics
A motorcycle officer hidden at an intersection observes a car driven by an oblivious driver who ignores a stop sign and continues through the intersection at constant speed. The police officer takes off in pursuit 1.98 s after the car has passed the stop
asked by laura 
chemistry
1 g alloy of Cu and Zn reacted with excess of H2SO4 gives 60 ml of H2 at STP. What is the % of Zn in the alloy?
asked by abhijit 
PHYSICS
A Carnot type engine has a reservoir of 1000 K with an efficiency of 50%. Find the temperature of the sink.
asked by KAIT 
marketing
Budgeting Concepts Paper (10 points). Prepare a 1,0501,750word paper in which you compare and contrast two types of operating budgeting concepts. For example, activitybased costing, zero based, line item, management by objectives, performance based,
asked by Anonymous 
finanace
Budgeting Concepts Paper (10 points). Prepare a 1,0501,750word paper in which you compare and contrast two types of operating budgeting concepts. For example, activitybased costing, zero based, line item, management by objectives, performance based,
asked by Anonymous 
earth
Why is the Earth's atmosphere rich in oxygen and poor in carbon dioxide?
asked by NAncy 
PHYSICS
a.A person with skin area of 3 m2 is nude in a room of still air at 22 C. i.Calculate the rate of conduction of heat loss in watts if the skin temperature is 28 C at a distance of 5 cm.
asked by KAIT 
SCIENCE
a.A person with skin area of 3 m2 is nude in a room of still air at 22 C. i.Calculate the rate of conduction of heat loss in watts if the skin temperature is 28 C at a distance of 5 cm.
asked by KAIT 
mathmodeling
Person A opens an IRA at age 25, contributes $2000 per year for 10 years, but makes no additional contributions thereafter. Person B waits until age 35 to open an IRA and contributes $2000 per years for 30 years. There is no initial investment in either
asked by fazilah 
science
Prepare a comprehensive directory (i.e. scrap book made of newspaper) of related resources with current news, information on forests, forest biodiversity including the people, plants and wildlife that call them home and why it is important to preserve
asked by stefeena 
MATHS
two circles c1 and c2 meet at the points A and B. CD is a common tangent to these circles where C and D lie on the circumference of C1 and C2 respectively. CA is the tangent to c2 at A. When produced DB meets the circumference of C1 at p. Prove that PC is
asked by JJ 
english..... please help me
is anyone can help to correct my english..thank you....please correct if it relevant to the question of my exination..thanks and GOD BLESS U. question..1.What is meant by “if we are to improve our speaking skills, we must first become more aware of
asked by jessie 
english..... please help me again.
please help me on my exam. to make good answer enough.please correct my english and answer if it is relevant to the question. thanks alot. please help me if you can give or add more on my answers. question 2.“Spoken language was the first form of
asked by jessie 
To Jessie  re English
Read and follow the directions I have already posted for you. Those are your first steps. http://www.jiskha.com/display.cgi?id=1313664789 No one can help you until you do those things, and continuing to repost the same things will not change anything.
asked by Writeacher 
B.V.B
A 10G bullet is short from a 5kg gun with a velocity of 400m/s.What is the speed of recoil of the gun?
asked by sachin 
physics
A car travels directly northwards at 10m/s.it then accelarates at 2m/s^2 over a distance of 200m.calculate the car's velocity after 200m.
asked by Welheminah 
health
total number of beats in 24 hours if the rate is 42 beats in 30 sec.
asked by shayla 
Titration Experiment
Why is unnecessary to measure precisely 25 ml of unknown acid into the beaker?
asked by Veronica 
MATH
What happens to the mean, median and mode for the data shown if the outlier is eliminated? 38 33 38 32 33 6b 30
asked by chachis 
analytical practical III
what happen when sodium hydroxide react with 5% cider vinigar
asked by 207236330 
math
sander needs to find 73%of $239. what is a good estimate of the answer
asked by howard 
Business Excel
I need help with BIS 155 Data Analysis with spreadsheets final exam. Total of 5 essay questions. Must write a total of 250 words per questions. This class is a excel class.
asked by Jacqueline 
HUM186
1. What are the social responsibilities of news media?
asked by Anonymous 
Math
1. Make a scatterplot of the data in the viewing rectanlge[19030,2010,10]by[0,6,1]. 2. Find the quadratic function given by f(x)=a(xh)2+k that models the data. 3. Estimate the minimum wage in 1976 and compare it to the actual value of $2.30. 4.Estimate
asked by Porsha 
algebra
A 49 foot pipe is cut into two pieces. If one piece has a length of y feet, what is the length, in feet, of the other piece?
asked by danielle 
physics
a body travels half of its total path in the last second of its free fall from rest.what is the duration of fall . you have answered the question before but the answer my mam gave is 3.4sec but you have solved it to 1.4sec .plz solve it for me
asked by pavatharani 
anatomy and physiology
select the correct sequence of nerves and nervous structure that would allow you to feel someone tickling the back of your leg?
asked by Anonymous 
Calc AB
(1/(x+h))(1/x) ..simplify
asked by star 
chemistry
Which best describes the physical change of an aluminum soda can after its crushed? A change in the mass of can B change in weight of can C change of volume of can D change in the specific heat of can
asked by Chriese 
Calc AB
(x+y)^3 expand
asked by star 
English
What word can I use to replace "fall victim to." Give me some examples please. I'm stumped.
asked by Sally 
math
100 Duration (d) in minutes what is the cost (c) in rands
asked by Anonymous 
Math
Can you check these questions for me? 1. Add: (3x^4x+2)+(9x^5x^2+x) 9x^5+3x^4x^2+2 2. Add: (4x^32x^2+x+4)+(9x^5x^2+4x) x^5+4x^33x^2+13 3. Subtract:(4x^4+3x+x^2)(x^26+3x^3) 4x^43x^3+3x+6 4. Subtract: (5x6)(3x^32x^2) 3x^3+2x^2+5x6 5.
asked by Chandler 
psychology
Sometimes when going to meet Jamie, Karen mistakes someone else for him. Her motivation and her expectation of seeing him affect her perceptions. Describe one study illustrating either of these factors and its effect on perception.
asked by mary 
math
a 4 digit number my 2 nd digitis twice my 3 digit the sum of all my digits is 3 times greater than my last digit the productof my 3rd and 4th digits is 12 times greater than the ratio of my 2nd to 3rd whats my number?
asked by richard 
Life orientation
In 1015 lines critically discuss 5 ways in which HIV AND AIDS problem impacts on the community.provide relevent sources to support your claim.
asked by Florance 
algebra
How do i work out this problem: f7.8=
asked by salina 
Calc AB
eliminate the parameter and write a rectangular equation for x=(t^2)+3 y=2t
asked by girl 
Physics
Three charges q1, q2 and q3 lie along the xaxis. Charge q1=2.5 micro coulomb is at x= 1.5 m, while charge q2= 6.3 micro coulomb is at the origin. Where must the third charge q3 be placed on the axis so that the resultant force on it is zero?
asked by Hilary 
Life orientation
What are the consequences of alcohol
asked by Ndumie 
Algebra
2. The Sugar Sweet Company is going to transport its sugar to market. It will cost $4200 to rent trucks, and it will cost an additional $150 for each ton of sugar transported. Let C represent the total cost (in dollars), and Let S represent the amount of
asked by Daniel 
Math
HELP! can you check and help me with some of these? 1. y + 8 = 15 My answer: 7 2.3x = 27 My answer: 9 3. 5 + a = 19 My answer:24 4. x + 1/3 = 5/6 My answer: NEED HELP WITH THIS ONE 5. 54 = 6y My answer: 9 6. a/3 = 11 My answer: 33 7.19.5 = 39.5 +
asked by Bryce 
algebra
what is 4.14 times 10 to the 2nd power ?
asked by Caliyah 
stats
what does it mean to say alpha is set at 0.5
asked by nicole 
Science
How do you draw an atom?
asked by Bryce 
Algebra
I need this answer in Scientific Notation please help 7.74x10^4
asked by Cj 
math
1,8,27 what are the next 3 numbers? What is the pattern?
asked by steve 
Social Studies
One of the most hotly debated topics of national concern is gun control. In a complete essay, compose a proposal to either ban all hand guns or to allow free ownership of all hand guns and trace the history of this proposal. You must show the process it
asked by Tatianna 
Comp 155
identify the three key parts of a paragraph.
asked by Camille 
health safety & nutrition
measurements of height and weight provide useful information about: a.intellegience b.overall health status c.adult shape d.development age
asked by sue 
Calculus
I'm having difficulty figuring #2 of this prob;em. I'm utterly clueless. Can someone explain it? Please and thank you. y=x 2. List the roots of the function.
asked by Elee 
3rd grade math
how do you write a 4 didget number in expandable form ?
asked by brianna 
Math
Two small conducting spheres are identical except that sphere x has a charge of 10 micro coulombs and sphere y has a charge of + 6 micro coulombs . After the spheres are brought in contact and then separated,what is the charge on each sphere ,in micro
asked by Troy 
Math
What does KAPS mean in Math?
asked by Charlie 
MATH PLEASE HELP!!!!!
There are 36 buttons in a jar. There are 3 times as many red buttons as white. 1. how many white buttons are there? 2. how many red buttons are there? My answer is 6,am i right?
asked by LIDIA 
Math
Does 5/8 + 5/6 = 1 11/24
asked by Jessie 
marketing
which of the following are components of a proposed marketing plan? a.target market, costs, expected sales results b. website design, costs, expected sales results c. target market, costs, wbsite design d. website design, target market, expected sales
asked by Anonymous 
marketing
the fact that many americans want the convenience of driving gasguzzling trucks and sport utility vehicles that contribute disproportionately to pollution and global warming is an example of: A. the micromacro dilemma B. discrepancies in customer value
asked by Anonymous 
MATH HELP
There are 20 red and blue pens in abox. There are 3times as many blue pens as red pens? How many red pens are there? How many blue pens are there?
asked by MIKI 
Math
Does 5/8 + 5/6 = 1 11/24
asked by Jessie 
science
i grew in a cave but i am not alive.What am i
asked by Gabby cornieliues 
psychology
HYPOTHETICAL EXPERIMENT: You, as an eager young behavioral scientist, have noted that many people don't wash their hands when they are in a public rest room, unless there is someone there who they believe is watching them. Because you are very aware of the
asked by Jkim 
math
The base of a parallelogram is 6 times its height if the base is cut in half,the new area is what percentage of the original area?
asked by kyra 
6th grade math
2 2/3 \ 1 5/6
asked by Aaron 
Free Enterprise
Is the definition of thinking at the margin basically saying if you don't have any specific numbers or the use of the one additional unit in the situation at hand, then it wouldn't be thinking at the margin?
asked by CPut 
math
The base of a parallelogram is 6 times its height if the base is cut in half,the new area is what percentage of the original area?
asked by kyra 
marketing
a manufacture of drinks, wants to add packaged fruit juices to its existing product line. the manufacturer needs to make some decisions regarding packaging and branding of the fruit juices. these decisions would fall under which variable of the marketing
asked by Anonymous 
Math
Simplify 17/21.
asked by Madison 
Math Calc
Find the tangent line to the curve (yx)^2= 2y+4 at the point (2,6)
asked by Lalee 
math
Evaluate write in simplest form Y  for y = 6 and z = 20 z
asked by brittany 
Math
simplify 13/17
asked by Madison 
Math
simplify 64/76
asked by Madison 
Math
The temperature at 3:00 am was 17 f by noon the temperture was 17.8 f at what time was it the coldest?
asked by brittany 
science
What tools and safety standards do scientists use in scientific investigations
asked by Anonymous 
Math
simplify 14/22
asked by Madison 
Math
Samual is 5 in , taller than Jackie  8 shelly is 0.7 in taller than Jackie whos taller?
asked by brittany 
Physics
Two cars travel at the same speed, so that they move 105 km in one hour. One car, a sleek sports car, has a motor that delivers only 35 kW of power at this speed. The other car needs its motor to produce 65 kW to move the car this fast. The difference is
asked by Gullu 
Physics
Two cars travel at the same speed, so that they move 105 km in one hour. One car, a sleek sports car, has a motor that delivers only 35 kW of power at this speed. The other car needs its motor to produce 65 kW to move the car this fast. The difference is
asked by Gullu 
PHYSICS
A person with skin area 2 m2 and 0.97 radiation efficiency is at rest and has a skin temperature of 28 C in an environment with a uniform temperature of 22 C .Calculate the heat loss rate in watts
asked by KAIT 
PHYSICS
A person with skin area 2 m2 and 0.97 radiation efficiency is at rest and has a skin temperature of 28 C in an environment with a uniform temperature of 22 C .Calculate the heat loss rate in watts
asked by KAIT 
PreAlgebra
5 and 17/20  3 and 1/4
asked by Hannah 
physics
the plumbing in an old house uses lead pipes (which are now considered hazardous). Hot water is run through a section of pipe, increasing its temperature from 19.4 C to 36.8 C. if the pepe is intially 3.90m in length, what is the change in the length of
asked by Anonymous 
history
Where do archaeologists believe early Americans came from?
asked by brittany 
physics
A person with skin area 2 m2 and 0.97 radiation efficiency is at rest and has a skin temperature of 28 C in an environment with a uniform temperature of 22 C. Calculate the heat loss rate if the skin temperature is raised by 8 C by vigorous exercise.
asked by KAIT 
english..pls. ms. sue help me
please help me on my exam. to make good answer enough.please correct my english and answer if it is relevant to the question. thanks alot. please help me if you can give or add more on my answers. question 2.“Spoken language was the first form of
asked by jessie 
physics
a. A person with skin area 2 m2 and 0.97 radiation efficiency is at rest and has a skin temperature of 28 C in an environment with a uniform temperature of 22 C Calculate the heat loss rate in watts
asked by KAIT 
physics
a. A person with skin area 2 m2 and 0.97 radiation efficiency is at rest and has a skin temperature of 28 C in an environment with a uniform temperature of 22 C Calculate the heat loss rate in watts
asked by KAIT 
please help me ms. sue
is anyone can help to correct my english..thank you....please correct if it relevant to the question of my exination..thanks and GOD BLESS U. question..1.What is meant by “if we are to improve our speaking skills, we must first become more aware of
asked by jessie 
physics
A person with skin area 2 m2 and 0.97 radiation efficiency is at rest and has a skin temperature of 28 C in an environment with a uniform temperature of 22 C. Calculate the heat loss rate if the skin temperature is raised by 8 C by vigorous exercise.
asked by KAIT 
physics
A person with skin area 2 m2 and 0.97 radiation efficiency is at rest and has a skin temperature of 28 C in an environment with a uniform temperature of 22 C. Calculate the heat loss rate if the skin temperature is raised by 8 C by vigorous exercise.
asked by KAIT 
PHYSICS
a. A 25 nC particle and a – 7 nC particle is interacting with each other at a certain distance. Find the force between the two charges @ 3.0 cm and 1.0 cm Calculate and draw each of the particle’s electric fields. Calculate the electric potential
asked by KAIT 
history
what animal was a source of food for early hunters yet is not in existence today?
asked by brittany 
physics
The graphs below show position as a function of time for three different objects. Describe the similarities and differences of these motions. Explain your answer.
asked by Gullu 
PreAlgebra
5 and 17/20  3 and 1/4
asked by Hannah 
French
Can someone tell me the french numbers 110 in order?
asked by Bryce 
physical science
what is the freezing point depression when 153g of bromide is added to 1000g of benzene?
asked by melanie 
physical science
what is the freezing point depression when 153g of bromine is added to 1000g of benzene?
asked by melanie 
math
This number has 4 places to the right of the decimal point. It has 2 hundreds, 3 ten thousandths, and 1 tenth. It is between 240 and 242. The thousandths place is one less than the ten thousandths and less than the hundredths. What are the six numbers that
asked by lisa 
math
at a local restaurant 45% of the customers order spaghetti. Estimate the probability that 6 of the next 10 customers will order spaghetti.
asked by Tammy 
biology
Describe the concept of natural selection. Give some examples.
asked by Anonymous 
Math
Could I please have some help with this Calcuate the following and simplify where possible 3/7 divided by 2/3 1/4 divided by 5/6 1/3 divided by 5/12
asked by Anonymous 
math
Omar has the TalkALot plan. In September, his bill was $168.00. write an expression and show work
asked by cha 
Math
Can someone please help me with the following Complete the following calculations, making sure you follow the BEDMAS rule for order of operations (^361)2
asked by Anonymous 
trig
how do you find all the values of theta from 0 degrees through 360 degrees for which sin theta equals 0
asked by jen 
ms. sue pls. help me urgent
pls help me if my english is correct in grammar or relevant to the question thank you. question..1.What is meant by “if we are to improve our speaking skills, we must first become more aware of ourselves, our motivation, behavior patterns, and likely our
asked by jessie 
English
What does it mean " to get along you have to play along"?
asked by Nina 
ms.pls help me urgent and thanks a lot to you
ms sue thank you so much. and please help me again for this answer so that i can submit to my teacher in english. . “Spoken language was the first form of communication between human beings, it came along with the written language, and writing is the
asked by jessie 
chemistry
How do I draw Lewis Structure for BN and CN
asked by San 
Geometry please help me need to finish!
The slant height of a regular pentagonal pyramid is 6 cm, and the length of each side of the base is 3 cm. Find the lateral area.
asked by Nina 
Science
Scientists performed an experiment to determine whether there is a connection between learning ability and food. They took two groups of 20 mice each, all from the same purebred strain. The mice were deprived of food for 3 days and then given a standard
asked by Thomas 
Math
The table shows the driving distance from certain cities. From To Driving Dis(mi) Pittsburgh Johnstown 55 Johnstown Allentown 184 1. Write a number sentence that compares the mileage from Pittsburgh to Johnstown to Allentown, and the mileage from Allentown
asked by Hayley 
Math
Solve the following equation for t : 3/t + 2/m = 2
asked by Jenna 
Precalc
How would I put this parabola in standard form: x^26x+8y31 Here how I started it: x^26x+9=8y+31 Im not sure what to do from here :(
asked by Cinderella 
algebra
k^2+10k+16/k^2+13k+40 * k^2+5k/k^22k8
asked by Lois 
algerba 1 math
how do i solve the equation: 2(84)^2+84/4 please show step by stap HELP PLEASE
asked by cindey 
physics
A sports car moving at constant speed travels 120 m in 5.1 s. If it then brakes and comes to a stop in 4.0 s, what is its acceleration? Express the answer in terms of g's, where g = 9.80 m/s2. (Take the positive direction to be the direction of travel.)
asked by Hal 
CHEM 102
Can someone help me with this question please? What is the pH at each of the points in the titration of 25.00 mL of 0.1000 MHCl by 0.1000 M NaOH:i) After adding 25.00 mL NaOH ii) After adding 26.00 mL NaOH thankyou
asked by Anonymous 
CHEM 102
Can someone help me with this question please? What is the pH at each of the points in the titration of 25.00 mL of 0.1000 MHCl by 0.1000 M NaOH:i) After adding 25.00 mL NaOH ii) After adding 26.00 mL NaOH thankyou
asked by paige 
chem
If 1.0 L of 0.2 M Ca(OH)2 is added to 2.5 L of 0.1 M HCl, the pH of the final solution is? can someone show me the working out of this question? im very confused by it. thankyou
asked by an