Questions Asked on
July 20, 2011

statistics
The 92 million Americans of age 50 and over control 50% of all discretionary income (AARP Bulletin, March 2008). AARP estimated that the average annual expenditure on restaurants and carry out food was $1873 for individuals in this age group. Suppose this
asked by Anonymous 
Physics
Some gliders are launched from the ground by means of a winch, which rapidly reels in a towing cable attached to the glider. What average power must the winch supply in order to accelerate a 163kg ultralight glider from rest to 27.9 m/s over a horizontal
asked by Kristi 
Chemistry
What is the ph of 2.5 M solution of HClO4?
asked by Josh 
chemistry
The reaction of calcium bicarbonate, Ca(HCO3)2 with hydrochloric acid, HCl, produces a solution of CaCl2, gaseous carbon dioxide, CO2, and water, H2O. Write a balanced chemical equation for this reaction and determine the volume of CO2, in mL, that forms
asked by terria 
Child Psychology
I need help, could someone please check my answers to these five questions below. If I answered any that were wrong, please help me to identify the right answer. Thank you. 3. Even though her motherinlaw insists she is wrong, Danielle knows that which of
asked by Sharon 
math
When m is divided by 7, the remainder is 2. What is the remainder when 4m is divided by 7? Please give me an explanation and not just the answer! Thankss:)
asked by Jennifer 
chemistry
sample of liquid water at 100 degrees C absorbs 113 kJ of heat. HOw much water will be converted to steam heat vaporization if water is 2.26 kJ/g I just need help with what formula to set this up
asked by LG 
biology
hemophilia is a sex linked recessive disorder. A man who has a hemophilia has a daughter who has a normal phenotype. She marries a man who also does not have hemophilia. what is the chance that they will have a daughter who has hemophilia? what chance will
asked by sushk 
Calculus
The circumference of a sphere was measured to be 74.000 cm with a possible error of 0.50000 cm. Use linear approximation to estimate the maximum error in the calculated surface area
asked by Julie 
Chem
I have a chemistry test that I need help with. My answers have stars by them Can someone please help me with the answers to this test??? Part 1 – Matter as Energy & Structure 1. When a pair of electrons is shared between two atoms, a covalent bond is
asked by Winona 
principle of marketing
are offers of cash to customers who purchase a specific product, and ____ are offers of cash to customers who purchase a specific quantity of a specific product. a. Rebates; refunds b. Centsoff; refunds c. Rebates; premiums d. Rebates; money refunds is D
asked by vedrana 
chemistry
Repost ? [H3O+] in 0.15 M C2N2H8 and 0.35 M C2H2H9Cl; Kb= 4.7 x 10^4
asked by hal 
Earth Science
How is the local hydrologic cycle affected by the practice of drawing drinking water from a river and then returning sewage to the same river? Can anyone please help?????? THANKS A LOT!!!!!
asked by Cynthia 
accounting
On December 31, 2008, University Theatres issued $500,000 face value of bonds. The stated rate is 6 percent, and interest is paid semiannually on June 30 and December 31. The bonds mature in 10 years. Required: If required, round your answers to the
asked by me 
Calculus
A ball of radius 14 has a round hole of radius 8 drilled through its center. Find the volume of the resulting solid
asked by Jordan 
math
If a translation maps point (3, 2) to (4, 5); or T : (3, 2) (4, 5), indicate the image for (2, 4).
asked by robbie 
programming
write a program that asks the user to enter an objects mass, and then calculates and displays its weight.
asked by Anonymous 
chem
compute theoretical yield (g) ~2Al+3Cl2>2AlCl3 ~2g Al, 2g Cl2 [ans:2.5g AlCl3] i need the calculation work bcus i got diff from the ans which is 7.12 g.
asked by lily 
PHSC
Hello, i need help. This is WorkEnergy Theorum A car moving at 50km/hr skids 15m with locked brakes. How far will the car skid (with locked brakes if the car moves at 100km/hr assume that the mass of the car is 500kg
asked by latrice 
principle of marketing
Why would a company use an undifferentiated targeting strategy? ____a. The needs of individual consumers are similar, and distinctive marketing mixes are required to satisfy them. ____b. The undifferentiated strategy requires less time and fewer resources.
asked by vedrana 
Trigonometric Expressions
Simplify and write the trigonometric expression in terms of sine and cosine: tanxcscx= 1/f(x) What does f(x)=
asked by Anonymous 
Physics
A uniform bar of iron is supported by a lon, uniform Hooke's Law spring. The spring is cut in half exactly and the two pieces are used to support the same bar. If the whole spring is stretched by 4 cm in the first bar (that is not cut in half) how much
asked by Capreeca 
Physical science
A car moving at 50km/hr skids 15m with locked brakes. How far will the car skid (with locked brakes if the car moves at 100km/hr assume that the mass of the car is 500kg
asked by latrice 
chemistry
A sample of ammonia gas at 65.5°C and 0.921 atm has a volume of 15.31 L. What is its volume when the temperature is 15.8°C and its pressure is 0.921 atm?
asked by blake 
chem
a mixture of 50g of S & 1x10^2g of Cl2 reacts completely to form S2Cl2 &SCl2. Find the mass of S2Cl2 formed.
asked by susan 
principle of marketing
Morgan's decided to put a much larger share of its promotion budget into ____ because of the heavy reliance it will be placing on coupons in the second quarter. a. advertising b. sales promotion c. public relations d. personal selling IS B CORRECT ANSWER
asked by vedrana 
Math
A cylinder is inscribed in a right circular cone of height 8 and radius (at the base) equal to 2.5. What are the dimensions of such a cylinder which has maximum volume? What is the radius, and height?
asked by mike 
biology: genetics
You are attempting to determine whether a plantderived processed food sample (for example, a corn chip) contains material from a geneticallymodified organism (GMO). First, you crush the sample and attempt to extract DNA from it. Next, you perform PCR
asked by billy 
chem
a mixture of 50g of S & 1x10^2g of Cl2 reacts completely to form S2Cl2 &SCl2. Find the mass of S2Cl2 formed.
asked by ella 
geometry
Using the information about John, Jason, and Julie, can you uniquely determine how they stand with respect to each other? On what basis? Statement 1: John and Jason are standing 12 feet apart. Statement 2: Julie is standing 31º NW of Jason. Statement 3:
asked by Lydia 
English
Please check my work. Identify whether each sentence is complex, an exclamation, declarative, or interrogative. 1. Tim likes soup, so Mary bought tomatoes. Complex 2. Oh no! Exclamation 3. Do you want to play in the Garden? Interrogative 4. In the story,
asked by Priya 
chem
a mixture of 50g of S & 1x10^2g of Cl2 reacts completely to form S2Cl2 &SCl2. Find the mass of S2Cl2 formed. (ans:20.2g) i need the calculation work bcus i got diff. from the ans which is 70.2g.
asked by lily 
psychology of personality
The way you see and define your self is known as your a) selfesteem b)self concept c)social identity d)selfesteem variability is a correct answer? thank you
asked by vedrana 
chemistry
What is the equilibrium constant "Kp" at 200 C for the reaction below: P4(s) + 6 Cl2(g) >
asked by l 
algebra
A clerk was asked to change a $10 bill. She returned 9 more dimes than nickels and twentyone more quarters than dimes. How many coins of each did she return? Solve using the V.E.S.T. method.
asked by Sally 
Physics
All the formulars for solving motion under gravity and waves
asked by Aliyu 
math
lim (2x^2+3x2)/ (2x1) the lim is x>1/2 [ans:5/2 but i get 3/2) can someone show me the calculation work.
asked by ella 
MATLAB for MathMate
Would you please help Lee with his problem? Sra
asked by SraJMcGin 
chemistry
? [H3O+] in 0.15 M C2H2H8 and 0.35 M C2H2H9Cl
asked by hal 
Baking
Explain how a pan's surface affects the outcome of the baked product?
asked by Michael 
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
asked by Linda 
physics
a car moving with constant acceleration covered a distance of 50 metres between two points in 5 seconds. if the velocity of the car at the second point is 16 metres per second. what is the acceleration of the car. what the velocity of the car at the first
asked by kofi 
physics
if W(a) and W(g) are workdone on a person by air resistance and gravity respectively, during the first 600m of his fall what is the relationship between W(a) and W(g)
asked by lol 
physics II
the lens to retina distance in the human eye averages 2.0cm what is the power of the lens of the human eye
asked by kb 
chemistry
what is the angular momentum quantum number for the orbital from which an Mg atom loses two electrons to form Mg2+ ion.
asked by kb 
Chemistry
A NASA satellite showed that in 2003 the ozone hole was much larger than it was in 2002. The 2003 hole measured 1.04 x in diameter, while the diameter of the 2002 hole was 6.9 x Calculate the difference in size between the two holes in square meters
asked by Norma 
chemistry
RATE = ([ Na2S2O3]/time) = k [I]a [BrO3]b [HCl]c 1A) You mix together in the proper manner the following: 10.0 mL of .0100 M Potassium Iodide 10.0 mL of .00100 M Sodium thiosulfate 10.0 mL of water 10.0 mL of .0400 M Potassium Bromate 10.0 mL of .100 M
asked by Krisha 
Math
Mr. Doodle’s grade distribution over the past 3 years for a course in college algebra is shown in the chart below. Grade Number A 45 B 180 C 110 D 95 F 65 I 5 If Jane plans to take a college algebra course with Mr. Doodle, determine the empirical
asked by Jen 
algebra
The halflife of 234U, uranium234, is 2.52 105 yr. If 97.7% of the uranium in the original sample is present, what length of time (to the nearest thousand years) has elapsed?
asked by Anonymous 
partial fractions
(7x^216)/(x^22x) solve by using partial fraction decomposition. i cant figure out how to do this because after i split up the bottom the A and B don't end up having an x^2 in order to equal the numerator of the original fraction. so confused!
asked by gabs 
physics
what causes an object to experience an artificial gravitational acceleration in a rotating space station
asked by ikemaze 
English
Can you please check these few sentences, please? Thank you very much in advance. 1)I let you know about our daily timetable as soon as possible. 2) I believe you could meet at the hotel every day at around 5.45 for one or two hours of conversation
asked by Henry2 
Trig: Conics
Sketch the graph and find following info: Vertex: Focus: Directrix: Axis of Symmetry: Ends of Latus Rectum: (x2)^2=4(y3) I think the vertex is (2,3) is this correct, and how do I proceed on? Thank you!
asked by EVJ 
algebra
Find the vertex angle of an isosceles triangle with base angles of (3x+10) and (8x15). Show your work for credit.
asked by calisha 
rate of reaction
What is the initial rate of *appearance* of SO3(g)? a reaction and table are given: reaction: 2S02(g)+O2 > 2 SO3(g) Table note: i= initial, IRD= initial rate of disappearance; concentrations given in molarity (M) IRD given in M/s. Experiment [SO2]i
asked by j 
chemistry
What is the pressure change for the reaction below at 25 C in the process of reaching equilibrium if there is initially enough ammonium hydrogen sulfide to reach equilibrium? Kp= 4.0*(10^4) NH3(g)+H2S(g) >
asked by l 
Computer Science  MATLAB
thanks mathmate. It's way above my head to. I got another question Consider the following two equations: x^2 + y^2 = 42 x + 3y + 2y^2 = 6 Define a symbolic equation for each, and solve it by using MATLAB's symbolic capability. Could you solve these
asked by Lee 
Algebra
What is the equation of the line that passes through point (7,2) and is perpendicular to the line y=1/3x+4 A. y=3x+19 B. y=3x19 C. y=3x=19 D. y=1/3x+19 E. y=1/3x+2
asked by Deja 
Physics
A 49.9g golf ball is driven from the tee with an initial speed of 48.8 m/s and rises to a height of 24.0 m. (a) Neglect air resistance and determine the kinetic energy of the ball at its highest point. (b) What is its speed when it is 5.42 m below its
asked by Kristi 
equilibrium constant (Kp)
What is the equilibrium constant "Kp" at 200 C for the reaction below: P4(s) + 6 Cl2(g) >
asked by k 
Paseo
Today's hikers prefer a shoe that is six inches high, is made of leather, and thick sturdy composition soles. What correction should be made to this sentence?
asked by Anonymous 
physics
A partical is projected vertically upward with speed 20 m/s. What will be the time after particle is at a height 15m above the ground( g=15 m/s*s)
asked by Anil 
algebra
Kim is 9 years older than her siater. kim is one more than 3 times her sisters age. How old is kim?
asked by lisa 
Eath Science
Please help me on these questioons (Science homework)? 1. When people decide to use resources in the environment carefully it is _______ a) erosion b) restoration c) conservation d) ecology e) geology 2.Preservation of resources means________ a) using
asked by Tommy 
principle of marketing
Kleenex Boutique is brand n of tissue made by the Kimberly Clark: a)mark b)identification c)name d)guarantee is C correct?thank you:)
asked by vedrana 
physics
A 989 kg automobile is moving at 15.6 m/s at a height of 5.0 m above the bottom of a hill when it runs out of gasoline. The car coasts down the hill and then continues coasting up the other side until it comes to rest. Ignoring frictional forces and air
asked by Steve 
stats
A set of 50 data values has a mean of 30 and a variance of 4. I. Find the standard score (z) for a data value = 26. II. Find the probability of a data value < 26. I think the first part is z=(2630)/4 = 4/4 = 1. I am not sure how to go about the second
asked by Celest 
physics
If velocity v of particle moving in straight line is related with distance travelled S as v=2(1+S)^1/2. What will the acceleration of the particle?
asked by Pappi 
algebra
Solve by elimination method 3x+4y=5 6x+8y=10
asked by lola 
intermediate algebra
find the product. (5x6y)(5x+6y)
asked by Mike 
management of international business
1)what are the main changes in this current global market? 2) how do you define a global manager?
asked by janki 
math
List the ages of two people in your life, one older than you and one younger than you. It would be best if the younger person was 15 years of age or younger. Find the prime factorizations of your age and the other two persons’ ages. Show your work listed
asked by trenda 
Child Psychology
I need someone to let me know if I answered these two questions correctly. 1st Question Amy knows that when she runs over and stands quietly by her grandfather's chair, he will reach over and tickle her under her chin. When a child learns to behave in a
asked by Sharon 
unstanding psychology
the means of travel within and between neurons is different because: a. electrical signals move impulses within the neuron, while chemical signals move the impulses between neuron. b. chemical signals move the impulses within the neuron, while electrical
asked by Deanie 
English
Please check my work. Identify whether if this sentence is complex, an exclamation, declarative, or interrogative. The car broke down, but a rescuer van arrived within minutes.  Complex
asked by Priya 
Marketing
Wanted to know how to answer the following questions related to a small copier company. See below. Development: What is the training medium? Training mediums include internal, external, contracted, or outsourced.
asked by Tee 
Computer Science  MATLAB
Create a stacked contour plot of the MRI data, showing the first, eight, and twelfth layer of the data. An MRI visualization example is shown in the help tutorial. Copy and paste the commands into an Mfile and run the example. Be sure to add the clf
asked by Lee 
Maths
What is the estimate of the following quotient: 48.3 divide by 7
asked by Alexis 
health
hi there i realy need a script about noise pollution plz help me.thanks :D
asked by Sam 
English
Please check my work. Identify whether each sentence is complex, an exclamation, declarative, or interrogative. 1. Tim likes soup, so Mary bought tomatoes.  Complex 2. Oh no!  Exclamation 3. Do you want to play in the Garden?  Interrogative
asked by Priya 
chemistry
What is the result expected when alkanols are tested on a litmus paper ?
asked by David 
Math
In a multiplechoice test, each question has five options. Students will get 5 points for each correct answer; lose 2 point for each incorrect answer; and receive no points for unanswered questions. A student does not know the correct answer for one
asked by Jen 
Intro to calc
3 numbers x y and z are to bea randomly chosen between 0 and 1. A What is the probability that X + y + z will be less than 1? B What is the probability that both x+ y
asked by Jane 
Chemistry
On top of one of the peaks in Rocky Mountain National Park the pressure of the atmosphere is 500. torr. Determine the boiling point of water at this location. The heat of vaporization of water is 40.7 kj/mol.
asked by San 
Statistics
Suppose we have a population of scores with a mean (ì) of 200 and a standard deviation (ó) of 10. Assume that the distribution is normal. Provide answers to the following questions: What score would cut off the top 5 percent of scores? What score would
asked by Sam 
pressure change
What is the pressure change for the reaction below at 25 C in the process of reaching equilibrium if there is initially enough ammonium hydrogen sulfide to reach equilibrium? Kp= 4.0*(10^4) NH3(g)+H2S(g) >
asked by l 
chemistry
What is the result we get when NaOH and Na2CO3 solution are added to alcohol respectively in difference test tubes? (2)Discuss the reactions of aldehydes with fehling's solution.Give the relevant equation. (3)How would ethanoic acid react with ammonia(NH3)
asked by David 
Algebra
If the profit equation for the monthly sales of tile sets is P = x^2 + 56x  300, how do I find the number of tiles that yeilds the most profit. x=number of tile sets. The amount of money for costs each month is set at $300. I saw an answer as 28 tile
asked by Aria 
Computer Science  MATLAB
Thanks MathMate. Print plotting sounds awful O_O. What you suggested was correct and this code worked disp('Problem 13.9') x=[2*pi:.00001*pi:2*pi]; a=0; y=sin(xa); g=plot(x,y); title(sprintf('sin(x%.2f)\n',a)) grid on; set(g,'EraseMode','xor') while a
asked by Lee 
Maths
What is the estimate quotient of the following: 48.3 divided by 7
asked by Alexis 
intermediate algebra
find the product.(7x^2y)(7x^2+y)
asked by Mike 
college algeb
when ax^2+bx+c is divided by x1, the remainder is 10 if the same poly. is divided by x+2 the remainder is 1. x+1 is a factor of the polynomial. Find a,b, and c.
asked by rock 
introduction to computers
Which type of high speed memory is common to almost all personal computers? a)L1 b) L2 c)L3 d)L4 is a) correct answer?thank you
asked by vedrana 
chemistry
Im brenda,n i found its hard copng in chemistry.im dng grd 11,n i wish 2 hv sm1 wo wil help m cope.tnx
asked by Brenda nyathikazi 
chemistry
What is the result we get when NaOH and Na2CO3 solution are added to alcohol respectively in difference test tubes? (2)Discuss the reactions of aldehydes with fehling's solution.Give the relevant equation. (3)How would ethanoic acid react with ammonia(NH3)
asked by David 
Calculus
Use the Law of sines to find the remaining sides. 1. a=40 degrees; Beta=87; c=115
asked by Josh 
management
Where can I found information on how how ISO assures quality?
asked by patiance 
govt
Third parties are also called minor parties theocratic parties antiRepublicans authoritarian partie
asked by Anonymous 
math
i really don't understand why this 1lim 3/(y+4) [the lim is x>infinity] the ans is 0 while this 2lim (76x^5)/(x+3) [x>+infinity ] is  infinity. can anyone explain why the 1 is zero & the 2 is infinity.
asked by susan 
geometry
The points A(3;1), B(1;2) and C(2;3) in a cartesian plane are given. If CD is parallel to AD with D(t/3;t+1) determine the value of t
asked by steffi 
physics
what is the relationship between the distance fallen from an object as a function of time for an object experiencing air resistance.
asked by ike 
rate of reaction (formatted repost)
I can't get my table to line up so I've surrounded the values in curly brackets. Experiment [SO2]i [O2]i IRD O2 {1} {0.05} {0.05} {7.3*[10^(2)]} {2} {0.10} {0.05} {2.9*[10^(2)]} {3} {0.10} {0.15} {2.6*[10^(1)]} {4} {0.12} {0.12} {?????????????} so
asked by j 
phil
According to Sartre, what makes us uniquely free?
asked by Anonymous 
math
differentiate y=e^x/(x)^(1/2).i need the calculation work.[ans: e^x/x^(1/2)  e^x/2x^(3/2)]
asked by elli 
English
Rewrite the following sentencesto make them effective and precise. 1. The newspaper reported about how the hostages in Jolo were rescued. The newspaper reported about the hostages' rescue. 2. In actual fact, he posed as a policeman to extort money from the
asked by Hoa 
Algebra
Please show work because I have multiple questions like this and it will help me do the others. Thanks! Solve 12=w/4. a. 48 b. 3 c. 3 d. 48
asked by Deja 
math
A pyramid has a volume of 16 and an altitude of 5. What is the area of its base
asked by Anonymous 
math
how to d/dx x^2/(x1)^(1/2)? [ans: (x(3x4))/(2(x1)^(3/2))but i get (x(3x4))/(2(x1)^(5/2))].
asked by susan 
Mathprobability
In a multiplechoice test, each question has five options. Students will get 5 points for each correct answer; lose 2 point for each incorrect answer; and receive no points for unanswered questions. A student does not know the correct answer for one
asked by Jen 
speech
Some dragons may have a modification in this breath weapon  what part of speech is modification
asked by Chanel 
science
write down ten balanced equations
asked by gabriel 
English
Please check my work. Which word is correct? 1. I think (there, their, they're) son is the quarterback of the team. > "there" 2. The strom didn't have as much (affect, effect) on our community as it did no others. > effect 3. He is much bigger (than,
asked by Priya 
human services 260
why is it important for human services workers to know about financial management? two examples that tells your point.
asked by laniece 
HCA430
Which has a greater influence on a person’s health: individual choices and actions (micro perspective) or community policies and resource availability (macro perspective)? Discuss three reasons why you selected one over the other. Your initial post
asked by silvia 
Science
how many gram of oxygen in persent in 36 gram of water?
asked by Deepak 
math
f'(x).... y=(e^xe^x)/(e^x+e^x). I need the calculation work. [ans: 4/(e^x+e^x)^2]
asked by ella 
math
lim (76x^5)/(x+3).... the lim is x>+infinity [ans=infinity but i get 0] can someone show me the calculation work.
asked by ella 
intermediate algebra
Find the product. 9y^2(y^4+8y^3y^2+8y+7)
asked by Mike 
english 204
the dog is quiet, but the cat is missing. I want to know the voice and structure of this sentence
asked by soliah 
Chemistry
Is it possible to calculate heat of vaporization if i only have pressure and temperature.
asked by San 
math
If $690 is invested in an account that earns 20.75%, compounded annually, what will the account balance be after 25 years? (Round your answer to the nearest cent.)
asked by Anonymous 
math
Subtract and simplify if possible c/(x+c)c/(xc)
asked by shania 
chem
why is hexane known as hydrocarbon?
asked by jo 
govt
what system of government gives all key powers to the national government.
asked by Anonymous 
math
dy/dx of the following: x^2y^2=2/x^2 [ans:1/x^4y y/x]. i need the calculation work.
asked by susan 
English
Corrct the 10 mistakes found in the paragraph. You may have notice this plant Aloe barbadensis in your garden or neighbourhood,but may have not realise its medicinal property. (corrct noticed, realised, capitalise B in Barbadensis) It is used to cure many
asked by Hoa 
geometry
1] find the degree measure of an angle which is 4 divide by 5 of its complement 2]likewise 1 divide by 2
asked by fredie