Questions Asked on
May 25, 2011

Statistic
Sample autocorrelation at lag1, lag2, and lag 3 denoted by r1, r2, and r3 for large ‘n’ for weekly thermostat sales of one year are 0.4954 , 0.3285, and 0.0959. Assuming that SAC cuts of after lag3 and using level of significance = 0.05, the SAC
asked by Jacko 
Algebra
1. Express your answer in the form y=mx+b. (7,8); x+7y=6 2. Express your answer in the form y=mx+b. (4,8); 8x=7y+9 3. Express your answer in the form y=mx+b. (8,9); 5x+y=9 4. Express your answer in the form y=mx+b. (2,6); 8x+7y=5 I don't get ANY of this
asked by Ann 
Algebra
Justin had nickels and dimes in his pocket. when he counted out his change he had $1.30. If he had 17 coins altogether, how many dimes did he have?
asked by Kim 
MATH ~~
HELP Please!! Sample autocorrelations at lag1, lag2, and lag3 denoted by r1, r2, and r3 of weekly sales of shampoo bottles was found 0.4551, 0.3376, and 0.2514. Using the criteria of your text, the maximum number (‘n’) of weeks for shampoo bottles
asked by Peter 
us history
How do you think American isolationism and appeasement by Britain and France influenced the policies of Germany , Italy, and Japan?
asked by kathy 
U.S. History
Life for African Americans in the South changed after the Civil War because many Africans Americans...?
asked by Peter 
U.S. History
True or False? If a soldier had a wounded arm, it would most likely be amputated during the Civil War.
asked by Peter 
U.S. History
True or False? General Sherman's 60 miles path of destruction was from Atlanta, Georgia to Savannah, Georgia?
asked by Peter 
U.S. History
True or False? "The rebels are our country men again." Is a quote that is referring to the Emancipation Proclamation.
asked by Peter 
us history
how would the wartime experience of african americans , other minorities, and women make them less willing to accept the status they held prior to the war?
asked by kathy 
maths..
find the H C F of three Numbers 198 126 and 240 by using fundamental theorem of arithmetic
asked by .... 
English
Could you please check if everything is ok? It's really urgent. 1)The old woman is wearing an elegant black business suit with a white blouse and a whiteandblue striped scarf. 2)The boy in the picture is wearing a black leather jacket with a white
asked by Henry1 
Chemistry
What is the volume of 0.255 moles of gas held at 1.75atm and 10°C?
asked by J.Gomez 
travel agency
what is the comaprative analysis with competitors of the travel agency? thanks!!!
asked by resisster 
English
The waves got higher and higher. Then the waves broke the boat, and the emperor could not get back to the palace. (What is the meanign of 'Then' in the passage above? 1. At that time 2. After that 3. In that case Or another meaning?)
asked by rfvv 
social studies
Can someone give me some information and possible sources regarding some short and long term affects of nazi control over literature and art etc, as well as how the ideas and beliefs of members of German society changed as a result of Germany being
asked by Milia 
btech
a 2d regular box has a perimeter of 200cm determine the maximum possible area
asked by tony 
life orientation
provide recommendation on how to address the topic
asked by mals 
life orientation
provide recommendation on how to address the topic
asked by mals 
geography
Jshaped curve of mortality depicts the pattern of death typically experienced in:which one is the correct answer. a. Developing countries with high infant mortality b. Developed countries with low infant mortality c. Female pattern of mortality d. Male
asked by TALOFA 
geometry
If a rectangular solid has a volume of 27 and at least one edge the length of 3,which of the following Must be true? My thoughts lead me to think D is the answer,but I,m not sure?? a.The solid is a cube b.Exactly 4 edges of the solid have a length of 3
asked by JOY 
geometry
A pyramid has a square base with sides length of b. The height of the pyramid is h. If the pyramid is enlarged by doubling the height while leaving the base unchanged, what is the effect on the volume of the pyramid? Will the volume triple? These are my
asked by JOY 
SCIENCE(PHYSICS)
A train travels 40 km/hr for 0.2 hr, 50km/hr for next 0.2hr and 60km/hr for next 0.4 hr.calculate the average speed of train. My Solution:1st hr. distance=40 multiplied by 0.2=8km 2nd hr.= 50 multiplied by 0.2=10km 3rd hr. =60 multiplied by 0.4=24 km
asked by YASH 
SCIENCE(chemistry)
SIR BUT THIS IS ONLY PROVIDED IN THE QUESTION &I HAVE TO COMPLETE IT. (DRAW A TEMPERATURE TIME PLOT FOR ICE STEAM TRANSFORMATION.)
asked by YASH 
Science
In gunea pigs , short har (L) is dominant to long hair (l) and heterozygous conditions of yellow coat (cy) and white coat (Cw) give cream coat. A shorthaired, cream guinea pig is bred to a longhaired, white guinea pig, and a long haired , cream baby
asked by Ronia 
Science
In gunea pigs , short har (L) is dominant to long hair (l) and heterozygous conditions of yellow coat (cy) and white coat (Cw) give cream coat. A shorthaired, cream guinea pig is bred to a longhaired, white guinea pig, and a long haired , cream baby
asked by Ronia 
Chemistry
the vapour pressure of a solution having 2g of solute X ( molar mass=32)in 100g of CS2(vapour pressure = 854 torr)is 848.9 torr. The molecular formula of solute is?
asked by Swathi 
Physics
The electric field between the two parallel plates of an oscilloscope is 1.2 X 10^5 V/m. If an electron of energy 2 keV enters at right angles to the field, what will be its deflection if the plates are 1.5 cm long?
asked by Swathi 
Chemistry
What is the concentration of NO3 ions when equal volumes of 0.1M AgNO3 and 0.1M NaCl are mixed together?
asked by Swathi 
Chemistry
In a unit cell(cubic)atoms A,B & C are located at corners, facecentres and edge centres respectively. If atoms touching one of the rectangular plane of symmetry and one of the tetrad axis are removed then formula of the compound will be? 1)ABC2 2)AC2
asked by Swathi 
Chemistry
In AB...AB...AB type arrangement if all the atoms present in body are removed,then packing fraction of the crystal is?
asked by Swathi 
Chemistry
In Zinc blend structure (r[zn2+]+r[s2]) is equal to? (if edge lenght is a)
asked by Swathi 
geometry
I found the volume of six cubes to total 336 cubic inches. How do I change the volume to surface area? I need to find the Find the total Surface Area
asked by JOY 
Algebra
Write the equation of the line containing the given point and parallel to the given line. The equation of the line is y= ?... 1. Express your answer in the form y=mx+b. (7,8); x+7y=6 2. Express your answer in the form y=mx+b. (4,8); 8x=7y+9 3. Express
asked by Ann 
english
Do you say colorful or colored shirts?
asked by henry1 
Chemistry
The reaction O2 ⇄ 2 O has a K=1.2x1010. If a 1.7 L container holds 3.8 moles of O atoms (and nothing else), what will the concentration of O be when equilibrium is reached? So far, I have 1.2x10^10 = 2.2^2 / 0 but I don't know how to do the rest. When
asked by Kat 
math
order from largest to smallest 8, 5, 8,3 5, 6,1,3
asked by Anonymous 
Math
Kayla has a 41% grade average. Then sha takes an exam that is for 20% of her grade and gets an 100%. What is her grade now?
asked by Ashley 
Ancient History URGENT Akhenaten
HI Are there any good journal articles on Akhenatens personal aims? What he hoped to achieve. So far all I have is one sentance in a book saying he wanted to do away with the power of the priests of Amun. This is really urgent. My state library is offline
asked by HELP plz 
Pre algebra
Kayla has a 41% grade average. On an exam that is worth 20% of her grade she gets a 100%. What is her grade now?
asked by Ashley 
maths....(mathematics..)
by prime factorisation method find the least positive number divisible by 700 and 364
asked by .... 
english 114
I've got to write a good news letter to the president of a college expressing my appreciation of an instructor with dedication to his/her instructors...help
asked by tab 
trig
A plane is is flying 240 mph heading N60°E. The wind is blowing S30°E at 30 mph. What is ground speed? What is the smallest angle in the triangle? What is the biggest angle in the triangle? What is the remaining angle in the triangle? What is the bearing
asked by Anonymous 
intergrated math
evaluate the expression [(4(8].[7)(5)]
asked by Nichole 
algebra
(4a^3b^214a^2b18ab^2)/(2ab)
asked by ethan 
algebra
(4a^3b^214a^2b18ab^2)/(2ab)
asked by ethan 
algebra
(4a^3b^214a^2b18ab^2)/(2ab)
asked by ethan 
Geometry
A wooden cylinder with a diameter of 10 centimeters and a height of 20 centimeters rests on its circular base. It is cut in half horizontally. What is the difference between the combined surface areas of the two newly created cylinders and the total
asked by Mary 
Geometryhelp
If a rectangular solid has a volume of 27 and at least one edge the length of 3,which of the following Must be true? I,m not sure??? a.The solid is a cube b.Exactly 4 edges of the solid have a length of 3 c.Exactly 6 edges of the solid have a length of 3
asked by Mary 
teacher aids
In regular school,the mainstreaming/inclusion technique is?
asked by sara 
statistics
A vending machine dispenses coffee into a sixteen ounce cup. The amount of coffee dispensed into the cup is normally distributed with a standard deviation of 0.03 ounces. You can allow the cup to overfill 10% of the time. What amount (in ounces) should you
asked by dj 
STATS
a woman standing on a bridge overlooking a major insterstate wants to know how likely it is that the next 20 out of 50 cars that pass under the bridge are red cars, if she has observed in the past that the probability than any given car on that interstate
asked by Mattie 
Ancient History
Hi Okay, hypothesis time XD. That Akhenaten challenged the religous system of New Kingdom Egypt and the role of a typical New Kingdom pharoah. Furthermore he did not create any lasting reforms, was detrimental to Egypts development and did not act as a
asked by Em 
algebra
Simplify the expression: 3x^2 − 3y + 8x − 5x^2 + 12y
asked by jordan 
math
2/27(x3)√((x^26x+23)/y)rearrange the equation to make y the subject
asked by alan 
geometry need help
Claim: the lateral (side ) surface of any area of any cylinder can is larger than the circlar surface area of its bottom. Which of the following is an example showing that the claim is false? a. a can with the diameter of 5 inches and height of 10 inches
asked by Mary 
Maths
How many 1's go into 4??
asked by Milly 
algebra
Find the value of f(0) if f(x) = x2  3x + 2 / x + 1
asked by jordan 
Algebra
x = 2 or x = 4 What is the Quadratic equation?
asked by Julie Ty in advance 
math
3n5=15
asked by Anonymous 
math
The University Entrance scores are normally distributed with a mean of 250 and a standard deviation of 30. What is the probability that a randomly selected student scored lower than 250?
asked by Probability 
Spanish
How do you say she was looking at the tv in Spanish. I know this is in the imperfect progressive but ver ( to look) is irregular in the imperfect . Does that matter? Would it be esta viendo a la tele?
asked by Hannah 
math
Explain why the function f(x)={x^29}/{x3} is discontinuous at x=3.
asked by Function 
Geometry
3. A box company produces two sizes of pizza boxes. The smaller box has a surface area of 260 square inches. The larger box has a length, width, and height that are twice those of the smaller box. What is the surface area of the larger box? A. 520 square
asked by Mary 
math
The derivative of f(x)=square root of {x} with respect to x is given by f'(x)={1}/square root of {x}.it is true or false?
asked by Derivative 
math
The function f(x)=(x2)^4 has an inflection point at x=2.It is true or false.
asked by Function 
math
A study has shown that 20.05% of all college textbooks have a price of $80 or higher. It is known that the standard deviation of the price is $10. What is the mean price of the college textbooks? Assume the price is normally distributed.
asked by Math 
algebra
Solve the equation: 2x − 5 £ 9
asked by jammon 
math
The function f(x)=x(x1)(x2) has stationary points at x=0, x=1 and x=2.true or false.
asked by Function 
math
The price p per kilogram when x kilograms of a certain commodity are demanded given by p=[{300}/{x+3}]+105 for 0 < x < 100 Find the revenue function.
asked by Function 
math
The sales (in millions of dollars) of a laser disc recording of a hit movie t years from the date of release is given by S(t)=[{4t+1}/{t^3+1}] How fast is the sales changing one year the laser discs are released?
asked by Math 
trig
An aifplane is flying on a compass heading (bearing) of 170* at 460 mph. A wind is blowing with the bearing 200* at 80mph. a) Find the component form of the velocity of the airplane. b) Find the actual ground speed and direction of the airplane.
asked by ale 
geometry
The volume of a cone is 54 pi cubic inches. The radius and height of the cone are both reduced by a factor of 3 to create a new cone. What is the volume of the new cone? Is the volume of the new cone 18pi cu in A. 2 pi cu inches B. 6 pi cu inches C. 9 pi
asked by Mary 
Pre Calc
Find the work done by a force F of 30 pounds acting in the direction (2,3) in moving an object 3 feet from (0,0) to the point in the first quadrant along the line y = (1/2)x.
asked by Em 
trig
A 2000 pound car is parked on a street that makes an angle of 12* with the horizontal (think it's a street on a hill). a) find the magnitude of the force required to keep the car from rolling down the hill. b) Find the force perpendicular to the street.
asked by ale 
physica
a stone is thrown vertically upward with an initial velocity v0. the distance travelled by it in time 1.5v0/g?
asked by pavatharani 
business
are there similars between the world court and the us courts
asked by ctherine cummins 
GeometryHelp PLZ
Each of 6 cubes has a volume of 64 cubic units. If the figure is reduced in size such that the volume of each new cube is 1/8 the volume of the original, what is the surface area of the 6 cubes after the decrease? I came up with 96 sq units Is this
asked by Mary 
business
what are the procedures of the world court.
asked by ctherine cummins 
math
what is 4 divided by 2 2/3?
asked by Gavin 
Life orietation
Describe the life style disease/behaviour and explain 5 (more)factors that contribute to the disease.topic that refers to:lack of physical fitness and proper nutrition in the adolescent
asked by Vusi 
For Ms Sue
Claim: the lateral (side ) surface of any area of any cylinder can is larger than the circlar surface area of its bottom. Which of the following is an example showing that the claim is false? a. a can with the diameter of 5 inches and height of 10 inches
asked by Mary 
trig
if x and y are positive acute angles, tan x=1/3and tan y =1/4, find the value of sin(xy)
asked by Anonymous 
Biology
What is in urine after in has been filtered thrigh the kidneys?
asked by Lauren 
Geometry  Ms Sue
Do I need more information to work this problem???? A box company produces two sizes of pizza boxes. The smaller box has a surface area of 260 square inches. The larger box has a length, width, and height that are twice those of the smaller box. What is
asked by Mary 
Math
3/17x=12
asked by Tammy 
algebra
Let R = {0,1,2,3}be the range of h(x)= x7. The domain of h is?
asked by Loren 
algebra
Which of the following functions has an inverse that is not a function? y=x y=2x+1 y=x to the second power
asked by Loren 
chem
Balance the following redox equation by the oxidation number methode Ag + HNO3 = AgNO3 + NO + H2O
asked by Amber 
Algebra
If g(x)=3x5, then g inverse(x)=
asked by CAL 
Mrs.Sue please help!!!
It says in my competency goal 1 to establish and maintain a safe,healy learning environment. This is what i put. To provide a safe enviroment for infants you must make sure there are no small toys that the kids can choke on. You also need to make sure that
asked by Heather 
Algebra
If f(a)=K, then which of the following must be true? f(K)=a f inverse(k)=a f inverse(a)=K
asked by Jon 
Math
156 x 29/39 x 1/16
asked by Tammy 
human resource management
1. Critically evaluate the job analysis that Mary conducted for the position of assistant manager. Has she used appropriate methods? What are the strengths and weaknesses of her efforts? 2. What kind of factors about Today's Fashion and its operations
asked by tim 
career management
When considering a postsecondary option, you should consult which of the following sources? A. your internal motivation B. family and friends C. reference materials D. all of the above
asked by career management 
Math
A box company produces two sizes of pizza boxes. The smaller box has a surface area of 260 square inches. The larger box has a length, width, and height that are twice those of the smaller box. What is the surface area of the larger box? Choices are: A.
asked by Mary  Help plz 
Algebra
The volume of a cone is 54 pi cubic inches. The radius and height of the cone are both reduced by a factor of 3 to create a new cone. What is the volume of the new cone? Is the volume of the new cone 18pi cu in A. 2 pi cu inches B. 6 pi cu inches C. 9 pi
asked by Mary  Help plz 
algebra
Hector enlarges a photo 4 by 6 so that measures 12 by 18. The area of tge englared photo is how many times greater than the area of the original photo?
asked by synthia 
English
I urgently need to find a site where I can get a video lesson with transcript of the Holocaust. By the way, could you check these sentences I'm not sure of? 1)Robinson’s ship was stuck (wrecked) in the sand and the waves were dashing over it. There was
asked by Henry1 
excel graphing
In cell D21, type the formula to calculate the % change from January to February. That formula is: =(J18E18)/ABS(E18). Format the result in the Percentage style and decrease the decimal places if necessary to round the result to the nearest whole percent
asked by kayla 
Physics
Find the electric field at P in the figure shown below. (Take r = 1.5 m and θ = 41°. Measure the angle counterclockwise from the positive xaxis.)
asked by SBHS 
Geometry
The area of a regular hexagon is 35in.2. Find the length of the side.
asked by Meg 
Chemistry
Calculate the heat change (q) in kJ for each reaction. Assume the density of the acid solutions is 1.00 g/mL and the heat capacity is 4.184 J/g*°C. i have the Ti and Tf..what equation do i use?
asked by ChemGeek 
Geometry  plz help
The radius of a right circular cone is 6 inches and the height is 8 inches find the slant height of the cone.
asked by Mary 
COMPUTER LITTERACY
HOW IS A CELL NUMBERED
asked by JMAN 
Chemistry
Please help! How many moles of hydrogen are needed to triple the volume occupied by 0.25 mol of hydrogen, assuming no changes in pressure or temperature
asked by Michelle 
math
Have a math question Determine whether or not the network is traversable.
asked by Anonymous 
Chemistry
Complete each of the following nuclear equations: a. 239/92U  ? + o/1e b. 11/5B  7/3Li + ? thank you!
asked by Pernell 
math
Carbon disulfide is produced by the reaction of carbon and sulfur dioxide. 5C(s) +2 SO2(g) > CS2(g) + 4CO(g) How many moles of CO would be made if you started with 10 moles of C?
asked by Clare 
Chemistry
Is this answer correct? Calculate the molar concentration of sodium hydroxide solution if 36.00mL of this solution were required to neutralize 25.00 mL of a 0.2000 M solution of hydrochloric acid. .0288M??????
asked by jordan 
Chemistry
Will you check this answer for me? the halflife of strontium87 is 2.8hr. What percentage of this isotope will remain after 8 hours and 24 minutes? ?? 34%
asked by Madison 
Managerial Economics
Assume the only choice variable is total benefit function is B(x) = 170xx², and cost function is C(x) = 10010x + 2x². a. What are the marginal benefit and marginal cost functions? b. Set up the net benefit function and then determine the level x that
asked by Megan 
Geometry
A right cylinder has a radius of 2 feet and a height of 5 feet. Find the surface area of the cylinder. What formula should I be using ? My answer should be 28pi ft^2 I didn't get this using 2pi.h + 2pir^2
asked by Mary 
Algebra 2
Solve and write in interval notation: 3 ¡Ü (x − 4) / 2 < 4 Solve and write in interval notation: 7 < 4x − 3 ¡Ü 7 Solve and write in interval notation: 4x − 2 < 6 AND 3x ¡Ý 6
asked by Anonymous 
Chemistry
NH4HS(s) reverse reaction arrow NH3(g) + H2S(g) Using Le Chatelier's principle, explain how increasing the temperature would affect the equilibrium.
asked by Kat 
physics
a man weighing 500N runs up a staircase half a minute he rise up by 4m. a.what work did he do? b.what was his power?
asked by sam 
chemistry
please help.....i want to know the metals that have atomic mass less than50 with symbol and valency
asked by mystery/chemistry 
Physics
The water level in a vertical glass tube 1.40 m long can be adjusted to any position in the tube. A tuning fork vibrating at 440 Hz is held just over the open top end of the tube, to set up a standing wave of sound in the airfilled top portion of the
asked by Emma 
Physics
A golfer hits a ball from the origin with an initial speed of 35 m/s at an angle of 44 degrees above the horizontal axis. The ball is moving down when it lands on a green that is 3.00 m above the level where it was struck. Neglect air resistance. 1. How
asked by Lynn 
Us History
Task: Identify two events (Monroe Doctrine & Open Door Policy) in U.S History that demonstrate how the U.S has promoted the national interest by taking foreign policy actions and for each event : .Discuss the historical circumstances that led the United
asked by Janina 
Chemistry
A 50.0 piece of ice at 0.0 is added to a sample of water at 8.0. All of the ice melts and the temperature of the water decreases to 0.0. How many kilograms of water were in the sample?
asked by Cassie 
us history
True or False? the war against hitler and mussolini was faught on three fonts: the soviet union, north africa and italy, and western europe?
asked by kathy 
us history
True or False! As soon as the United States entered the war in 1941, the tide turned in favor of the allies?
asked by kathy 
com 155
Are these well written sentences? 1. When I am writing, my words need to construct a clear picture for my readers. 2. I will avoid using slang in my writing. 3. Using irrelavant words, is one error I need to change in my writing. 4. I need to use a
asked by blake 
Physics
When a horizontal force of 350 is applied to a 86.0 box, the box slides on a level floor, opposed by a force of kinetic friction of 130 .What is the magnitude of the acceleration of the box?
asked by EL 
music
public enemy's abrasive rap recording fight the power has a basic pulse of
asked by Anonymous 
Physics
In an emergency stop to avoid an accident, a shoulderstrap seatbelt holds a 58 passenger in place. If the car was initially traveling at 94 and came to a stop in 5.2 along a straight, level road, what was the magnitude of the average force applied to the
asked by EL 
Biochemistry
what will be the pH of a buffer prepared by mixing 600 ml of 0.1M sodium acetate solution and 40 ml of 0.2M acetic acid solution
asked by Lisa 
geometry
line xy bisects and is perpendicular to line ab and dc .line Ab = 48 in. line ap = 26 inches . what is the length of line xy
asked by miguel butgos 
physics
an electric field of 15000 N/C is directed along the positive xaxis, what is the electric force on an electron in this field?
asked by Anonymous 
American Government
The nominating process? A.chooses new government officeholders. B.selects politicalparty leaders. C.narrows the field of possible candidates D.all the above
asked by John Delarosa 
Prealgebra
Simplify the expression 12q•0•q
asked by Ashley 
Prealgebra
Simplify the expression (8•5)•1
asked by Ashley 
Prealgebra
9n+599n
asked by Ashley 
Pre algebra
6k+104k2k
asked by Ashley 
World History
What was the most important factor in the British conquest of India during the eighteenth century? A. willingness of the British government to pay for an invasion. B. political disunity in India. C. superiority of British arms. D. addiction of millions of
asked by Joe 
Pre algebra
simplify (0+9k)+k
asked by Ashley 
Pre algebra
Simplify (3c•7)•2
asked by Ashley 
Pre algebra
Simplify 10w+6+3w
asked by Ashley 
Pre algebra
The width of a triangle is x3 and the length is 2x1. Write and solve an equation to find the perimeter and area of the rectangle if the measures of its length and width are in a 1:3 proportion
asked by Ashley 
Pre algebra
At the wintergrove amusement park you can purchase a season discount pass for 75$ that will allow a 10$ admission to the park all season. If you do not purchase a season discount pass, then the park admission is 35$. Determine the number of times you must
asked by Ashley 
psychological statistics
A random selection of files from a student counseling center revealed the following reasons why college students seek services: Mental health issues 25 Learning/school issues 15 Relationship issues 5 Other 5 What does it mean to say the files were randomly
asked by tia 
HISTORY
1. How did the rulers of the Canyon peoples deal with the environmental challenges that their region presented? A. They allowed high levels of citizen participation in the running of their local communities. B. They developed a remarkable level of exchange
asked by BOB 
GEOMETRY
PLEASE HELP ME, I HAVE AN EXAM TOMORROW AND THIS THE ONLY QUESTION I HAVE. THE AREA OF A REGULAR HEXAGON IS 35 IN SQUARED. FIND THE LENGTH OF A SIDE. ROUND YOUR ANSWER TO THE NEAREST TENTH. I KNOW THE ANSWER IS 3.7 BUT I DON'T KNOW HOW TO GET IT!!
asked by Meg 
physics
A golfer hits a ball from the origin with an initial speed of 35 m/s at an angle of 44 degrees above the horizontal axis. The ball is moving down when it lands on a green that is 3.00 m above the level where it was struck. Neglect air resistance. 1. How
asked by Amy 
chemistry
suppose that a scientist needs to make 100 mL of a 1.00 M solution. What mass of solid KC needs to be used
asked by heather 
chemistry
now lets say that this scientist wants to make 50 mL of a 0.250 M KC solution. How much of the 1.00 M "stock" solution whould he use
asked by heather 
math
Find a parametric description for the ellipse having the focus F=(0,4), corresponding directrix y=3, and eccentricity e=3/4.
asked by sophie 
Chemistry
Really hard Chemistry question that I need help with. Any assistance would be really helpful.? When 0.5963g of a sample containing NaNO2 and some inert material is allowed to react with excess HSO3NH2, the volume of N2 gas produced is measured. The volume
asked by Codec 
Chemistry
Calculate how much heat 32.0 g of water absorbs when it is heated from 26.0°C to 73.5°C.
asked by Jessica 
Chemistry
It says to draw the structural formula CH3CH(OH)CH3 on my hw. What's the parenthesis in the formula?
asked by Jamie 
Algebra 2
Simplify: sqrt6(sqrt2/2+sqrt3)sqrt8 I need all of the steps. I need this ASAP because this is due tomorrow. Thanks
asked by Brandon 
Chemistry
The specific heat of toluene, C7H8, is 1.13 J/g K. How many joules of heat are needed to raise the temperature of 30.0 g of toluene from 10.4°C to 29°C? THANK YOU
asked by Emily 
Algebra 2
Simplify: sqrt(72x^3)5x sqrt(2x) I need all of the steps. I need this ASAP because this assignment is due tomorrow. Thanks
asked by Brandon 
Algebra 2
Simplify: (2sqrt6sqrt3)^2 I need all of the steps. I need this ASAP because this assignment is due tomorrow. Thanks
asked by Brandon 
Algebra 2
Simplify: 6/(3+2sqrt3) I need all of the steps. I need this ASAP because this assignment is due tomorrow. Thanks
asked by Brandon 
Chemistry
0.60 mol of steam condenses at 100°C
asked by Emily 
Algebra 2
Solve: 2y=sqrt(y+4) I need all of the steps. I need this ASAP because this assignment is due tomorrow. Thanks
asked by Brandon 
Algebra 2
Solve x^44x^3+4x^29=0 given that 1+i sqrt2 is a root. I need all of the steps. I need this ASAP because this assignment is due tomorrow. Thanks
asked by Brandon 
Algebra 2
Simplify: (2^(1+sqrt2)/2^(1sqrt2))^sqrt2 I need all of the steps. I need this ASAP because this assignment is due tomorrow. Thanks
asked by Brandon 
Chemistry
When 0.5963g of a sample containing NaNO2 and some inert material is allowed to react with excess HSO3NH2, the volume of N2 gas produced is measured. The volume of N2 gas corrected to 298.15K and 100kPa is calculated to be 0.146L. Find the mass percent of
asked by SadFace 
Algebra 2
Are the functions f and g inverse functions if f(x)=5/3x+1 and g(x)=3(x1)/5? I need all of the steps on how to determine this. I need this ASAP because this assignment is due tomorrow. Thanks
asked by Brandon 
Algebra 2
Simplify: log6^(36/6^10) I need all of the steps. I need this ASAP because this assignment is due tomorrow. Thanks
asked by Brandon 
Chemistry
how do you calculate the quantity of heat gained or lost? 0.60 mol of steam condenses at 100°C
asked by Emily 
Algebra 2
If logb^z=1/3logb^x+logb^y, write z in terms of x and y. I need all of the steps. I need this ASAP because this assignment is due tomorrow. Thanks
asked by Brandon 
Algebra 2
Solve e^(2x1)=3 I need all of the steps. I need this ASAP because this assignment is due tomorrow. Thanks
asked by Brandon 
Chemistry
When 0.5963g of a sample containing NaNO2 and some inert material is allowed to react with excess HSO3NH2, the volume of N2 gas produced is measured. The volume of N2 gas corrected to 298.15K and 100kPa is calculated to be 0.146L. Find the mass percent of
asked by Derek 
Chemistry
In the test for chloride ion why is it necessary to acidify with hno3
asked by Agu 
grammar
is this senetence put right? or how do i fix it? Commas are very important to add to a sentence where they are needed because if you don't properly use them, the reader will be confused.
asked by diana 
Chemistry
When 0.5963g of a sample containing NaNO2 and some inert material is allowed to react with excess HSO3NH2, the volume of N2 gas produced is measured. The volume of N2 gas corrected to 298.15K and 100kPa is calculated to be 0.146L. Find the mass percent of
asked by Mark 
Chemistry
Mercury, with a freezing point of 38.8°C, is the only metal that is liquid at room temperature. How much heat energy (in joules) must be released by mercury if 1.30 mL of the metal is cooled from room temperature (18.0°C) to 38.8°C and then frozen to
asked by Amalia 
history
I am doing a report on the 1938 "war of the worlds"radio brodcast/scare. i need just one reliable website (no dot com's, dot net's or wikipedia)that can give me some more information on it. please give me a link
asked by penny lane 
Math
Use the limit process to find the area of the region between f (x)=10x+8 and the xaxis on the interval [0,3]
asked by Christiana 
algebra
what is the slope of line that passes through (3,8) and (0,6)
asked by randy 
Chemistry
A 22.0 g piece of aluminum at 0.0°C is dropped into a beaker of water. The temperature of the water drops from 92.0°C to 77.0°C. What quantity of heat energy did the piece of aluminum absorb? Please Help, I'm so lost :( Thank you
asked by Jane 
English
Could you please check these sentences,please? It's really urgent. I made some changes and I would like to know if they are correct. 1) The interior monologue has the following features. First, it is immediate since it lacks the conventional syntax and it
asked by Henry1 
Chemistry
Calculate how much heat 32.0 g of water absorbs when it is heated from 26.0°C to 73.5°C. In joules, and then we have to calculate calories too, how is that done? I was absent. Thanks so much!
asked by Jane 
history/ just need someone to read this
describe the reconstruction period and how is happened and if it had any gains. i have to post this a paragraph at a time. sorry The Reconstruction Period refers to efforts made in the US between 1865 and 1877 to restructure the political, legal and
asked by krystal 
science
What is a simple definition for the 2nd law of Thermodynamics?
asked by christina 
Ap human geo
Umm this isn't really a question, it's actually a thank you to Ms. Sue for answering my question. Although it was not direct and you made me think, ugh, I figured it out!!!! I did not check until today the 25 of May bcause no other website has given me an
asked by Arielle 
English
I left out three sentences, I hope you can see them. 1) Can you use his/her when writing a dissertion? Exmple: The character stays fixed in a place whereas his/her consciousness moves freely in time. 2) There was no use in (is "in" necessary?) thinking of
asked by Henry1 
English
I saw your corrections and I thank you for your help. Shall I write this way: 1) The interior monologue has the following features: first, it is immediate since it lacks the conventional syntax and it is free from introductory expressions. Second, it is
asked by Henry1 
Chemistry
A 22.0 g piece of aluminum at 0.0°C is dropped into a beaker of water. The temperature of the water drops from 92.0°C to 77.0°C. What quantity of heat energy did the piece of aluminum absorb? Please Help, I'm so lost :( Thank you
asked by Morgan 
us history
True Or False! Despite the steppedup industrial production of the war years, the United States could not shake off the effects of the Great Depression.
asked by kathy 
us history
True or False! Before the end of the war, the supreme court declared the internment of Japanese Americans unconstitutional.
asked by kathy 
Pre Calc
Find the work done by a force F of 30 pounds acting in the direction (2,3) in moving an object 3 feet from (0,0) to the point in the first quadrant along the line y = (1/2)x. The answer is 85.38 footpounds. I just need to figure out how to get the answer.
asked by Em 
math
This is a question on a study guide for a test tomorrow. How do you do it? Please help According to the Federal Highway Administration, teenage males drive an average of 10,718 miles each year. Assume the mileage totals are normally distributed with a
asked by Max 
advanced functions
I need help figuring this question out please :) log2=log(x+5)1 I have been studying for my test and this is a question i got stuck on.
asked by oranges 
Chemistry
Which shows 15/c9d3 in simplified radical form with the smallest possible index?
asked by Melanie 
Math
Given the plane 2x3y+7z=4, find the equation for the line perpendicular to the plane that intersects the plane at the point (6,5,1).
asked by Marisol 
Algebra
Write the equation of the line containing the given point and parallel to the given line. The equation of the line is y= Express your answer in the form y=mx+b. (7,8); x+7y=6 Express your answer in the form y=mx+b. (8,9); 5x+y=9 Express your answer in the
asked by AE 
Communication
What are innovative uses of communication technology that changed the world
asked by Theresa 
chemistry
What minimum mass of HCl in grams would you need to dissolve a 2.5g iron bar on a padlock?
asked by Anonymous 
Computers
What is good and bad email etiquette
asked by JoshelaT 
algebra
simplify and write using only positive exponents. thanks. (2x^3y^4)^2 divided by (8xy^6)^3
asked by kristin 
Algebra 2
Simplify: 2/^6sqrt8 I need all of the steps. Thanks
asked by Brandon 
math
Simplify: 5/8 divided by 15/16 + 1/2
asked by jasmine 
FRENCH
We just started learning about Reflexive Verbs. And We learned how they are supposed to be in the Past tense, but our focus right now is only on the Present tense. And for the present tense I am wondering whether I need agreement or not? Cause I believe
asked by Sydney 
advance functions
will someone please help me with the question i posted earlier ? :(
asked by oranges 
math
a rectangle whose sides measure 8cm 3cm 8cm and 3cm
asked by abriana 
Algebra
I need help multiplying rational expressions.. x2/x+3 x 4x+12/6 first I took the four out from 4x +12/6 so I got x2/x+3 x 4(x+3)/6 but now I'm not sure what to do?
asked by Michelle 
Sociology  Essay
I'm doing an essay about the 4 purposes of prison and how they are being met in the movie "The Shawshank Redemption". I have to do 4 of the 6 paragraphs with 2 points, 2 proofs, and 2 analysis. The paragraphs that I'm doing now are about protection and
asked by Alex L. 
grammar
Write several sentences describing a recent interaction with a friend or family member about personal finance or credit cards. This interaction may be imagined or real. Use at least five different pronouns, adverbs, and adjectives in your sentences.
asked by Venel 
MATH
Find A n B if A={5, 10, 15, 20} and B={10, 2O, 25, 30} THAT N IS AN UPSIDEDOWN U, DON'T KNOW WHAT THAT MEANS
asked by K. C 
Activity Question
Was conflict over red river settlement inevitable? Yeah because I am sure Macdonnel would have still issued his Pemmican Proclamation no matter what. This question is like a trick question. How do I reword it, and my answer is not good. please help
asked by Emma 
Social studies
Describe attitude of George Simpson and his wife towards natives peoples and Metis. how were their views racist? what impact did these views hve on simpsons? on red river settlement? George and his wife did not like the Metis and the Natives. Frances could
asked by Emma 
Grammar
***Is this done correctly? Write some examples of sentences that change the meaning of a word by using different modifiers? Eventually I realized what they were talking about. My grandmother is a very sweet woman. The man was extremely tall. It was
asked by Angelina 
physics
A 870kg race car can drive around an unbanked turn at a maximum speed of 41 m/s without slipping. The turn has a radius of 180 m. Air flowing over the car's wing exerts a downwardpointing force (called the downforce) of 11000 N on the car. (a) What is
asked by cswidener 
math
Solve the radical equation: √300 or ã300
asked by jasmine 
math
ã2x+4=4
asked by jasmine 
physics
A rocket, initially at rest on the ground, accelerates straight upward from rest with constant acceleration 29.4 . The acceleration period lasts for time 9.00 until the fuel is exhausted. After that, the rocket is in free fall. Find the maximum height
asked by ahhhh! 
Chemistry
I was heating a flask containing salicylic acid, acetic anhydride, and H2SO4 to synthesize aspirin. During the heating period, a black sludge appeared at the bottom of the flask. I have no idea what this could be. Other students had experiments that worked
asked by Gretchen 
risk management
You are the risk manager of an energy producing company. Your firm explores for and extracts crude oil. Your firm regularly produces approximately 50,000 barrels of oil monthly. You watch the energy markets closely and determine in early May 2011 that the
asked by kamran 
Red River SettlementRoles of the Women
What jobs did women do in the daily life of red river settlement? How does this relate to life for women colonists in the wilderness of upper Canada? Women and men worked side by side. The women helped in the grain harvest, using sickles to cut the wheat
asked by Emma 
Math
Find a parametric description for the ellipse having the focus F=(0,4), corresponding directrix y=3, and eccentricity e=3/4.
asked by Marisol 
finance
Refer to Figure 71 of Personal Finance. Why is it important to go through these steps when you are planning on making a large purchase? Provide at least one example to support your response.
asked by chris 
Economics
3. (i) Sleak Teak builds yard furniture using hardwoods and (in a smaller shop) handcrafted knickknacks from the same sort of wood. The hardwood usage in the two lines of product are Yard Furniture: Y = 2 Ty  .001Ty2 Knickknacks: Z = 20Tz  .01 Tz 2
asked by Michelle 
Economics
4 (ii) You manage Dirt Diggers, an excavating firm that excavates roadside ditches for laying drainpipes. Its output follows the production function: Q = 10L .1L2 where L denotes labor hours and Q the length of the ditch in meters. You can hire labor at
asked by Michelle 
Economics
2. (i) The production function for a firm is given by Q = LK where Q denotes output; Land K labor and capital inputs. Wage rate and rental rate are given by w and r respectively. (a) Show whether or not the above production function exhibits diminishing
asked by Michelle 
ecology
after spraying crops with ddt for several years, farmers found that populations of insect pests rebounded. one reason was that the insects had developed resistance to the insecticide. suggest populations, pyramids, predators and competitors
asked by nawal rahem 
science
Two point charges 8q and 2q are located at x=0 and x=l find the location on the x axis where electric field due to these two point charges is zero
asked by Prasoon 
english
How does the valley of ashes give a vision of the American Dream? Is it like that it showed prosperity?
asked by Katie 
English
syllableswhat would be the onset for throw and roast? throw a. thr b. ro c. ow d. th e. row roast a. roa b. oa c. st d. oast e. r
asked by Glenda 
US HISTORY
1.Good weather, sufficient supplies, and secrecy were the keys to the success of the Allies' crosschannel invasion of France. true or false
asked by tROMPUdA 
US HISTORY
2.At the Yalta Conference, Stalin agreed to enter the war against Japan, but he refused to promise free election in Eastern Europe after the war. true or false
asked by tROMPUdA 
US HISTORY
Despite their losses in the war, France and Britain were as firmly in control of their colonies in 1945 as they had been before 1939. true or false
asked by tROMPUdA 
physics
A motorcycle has a constant speed of 24.4 m/s as it passes over the top of a hill whose radius of curvature is 135 m. The mass of the motorcycle and driver is 364 kg. Find the magnitude of (a) the centripetal force and (b) the normal force that acts on the
asked by cswidener 
FIN
Jesse, Inc., located in Mesa, Arizona, manufactures highend baby chairs. The firm’s cost accountant, Lisa, has been assigned by the CEO to determine how many baby chairs Jesse, Inc., needs to make and sell in order to break even. She is given the
asked by ZICKO 
geology
When astronauts brought back rock samples from the Moon, the minerals present were mostly the same as those found on Earth. Can you think of reasons why this might be so? Would you expect minerals on Mars or Venus to be the same, or at least very similar,
asked by nikki 
Physics I
A car can decelerate at 4.40 m/s2 without skidding when coming to rest on a level road. What would be the magnitude of its deceleration if the road were inclined at 12° uphill? Assume the same static friction coefficient.
asked by Jason 
algebra
a bag contains 3 green marbles, 2 yellow marbles, and 5 blue marbles. a marble is picked at random and replaced. a second marble is picked at random. what is the probability that the first marble is yellow and the second is not yellow.
asked by waterman 
statistics
with a mean of 60 and standard deviation of 7, what is the z score at 1.64?
asked by jackie 
Chemistry
what are the concentrations of hydrogen ions and hydroxide ions in a solution that has a oh of 5? *please include work done so I can understand*
asked by Sara 
Economics
The accompanying table shows a car manufacturer’s total cost of producing cars: Qty TC Variable Costs Avg. Var. Costs Avg. Total Costs Avg. Fixed Costs 0 $500,000        1 540,000  2 560,000  3 570,000  4 590,000  5
asked by shay 
Bio
im stuck on these questions for my study guide Please help! i don't want links. thanks 1. Which of the follwoing would be an appropriate measure of the phenotypic variation of a trait in a population? a) the mean of the trait in the population b) the
asked by Philip 
physics
Calculate the maximum acc. of a car that is heading up a 4 degree slope. Assume that only half the weight of the car is supported by the two drive wheels and the static coefficient friction is involved the tires can not slip during the acceleration a) on
asked by jake moose 
biology
What are different ways antibodies can react with antigens, that aids in preventing a host from being infected.
asked by osa 
english
For Grapes of Wrath and the American Dream, how did the setting affect the characters vision of the dream? Is it sort of brutal because there was starvation, poverty, and death?
asked by Katie 
teacher aide
In a regular school, the mainstreaming/inclusion technique is a]used only with visually impaired students. b]often impossible with behaviour disordered students c]frequently a positive experience for regular students. d]impractical for learning challenged
asked by sara 
Chemistry
Determine Kc for the following reaction: 1/2N2(g) + 1/2O2(g)+ 1/2Br(g) NOBr(g) from the following information (at 298K) 2No(g) N2(g) + O2(g) Kc = 2.1x10^30 NO(g) + 1/2Br2(g) NOBr(g) Kc = 1.4
asked by K 
Chemistry
What are the steps in solving this problem? There was 455 mL of water added to 60 mL of a 2M ammonia solution. What is the new molarity?
asked by Colleena 
Chemistry
Starting with 0.3500mol Co(g) and 0.05500mol COCL2(g) in a 3.050 L flask at 668K, how many moles of Cl2 are present at equilibrium? Co(g) = Cl2(g) COCL2(g) Kc = 1.2x10^3
asked by K 
Chemistry
HCONH2(g) NH3(g) + CO2(g) Kc= 4.84 at 400 K2(g) If 0.186 mol of HCONH2(g) dissciates in 2.16L at 400K, what will be the total pressure at equilibrium?
asked by K 
math
What us the total length of the small rectangle? The length of it us 17inches
asked by wendy 
Algebra
Write the equation of the line containing the given point and parallel to the given line. The equation of the line is y= Express your answer in the form y=mx+b. (8,9); 2x=9y+4
asked by AE 
algebra
Write the equation of the line containing the given point and parallel to the given line. The equation of the line is y=... Express your answer in the form y=mx+b (2,6); 8x+7y=5
asked by samae 
Math
If the radius of a circle is 3960 the angle is 1.59 the arc length is 110 how would I find the hypotenuse? I think it is 3960/cos1.59 but I know that you just don't automatically know that wouldn't it start out as cos1.59 = A/H (adjacent/ Hypotenuse) Could
asked by Amy~ 
Chemistry
If you are given 46 grams of magnesium how many grams of hyfrogen will be produced?
asked by Jena 
teacher aide
when working with behaviour disordered children in the classroom,the teacher aide can modify behaviour by a.praising them when they succeed. b.using the same techniques for every student. c.underestimating what the child can do. d.reinforcing the problem
asked by sara 
Algebra
The equation of a mirror in a particular telescope is y= (x^2)/(520), where x is the radius (in cm). If the mirror has a diameter of 32 centimeters, what is the depth of the mirror?
asked by Calisha 
math
a 26 foot tree cast a shadow of 14 feet, a nearby tower cast a shadow of 21 feet, how tall is the tower?
asked by jamie 
math
What is the sin of 495 degrees?
asked by Suzanne 
Physics
On earth, a certain type of bacteria doubles in number every 24 hours. Two cultures of these bacteria are prepared, each consisting initially of one bacterium. One culture is left on earth and the other is put on a rocket travelling at .866c relative to
asked by Joe Schmo 
teacher aide
A diagnosis of mental retardation means that a child a.can't read or write at a funtional level. b.needs serious learning support in mental ability and behaviour. c.has a mental age equal to his or her chronological age. d.can never funtion in normal
asked by sara 
Math
which mountains peaks can be seen from Oahu. Island Distance(Mi) Mountain Height(ft) Molokai  40  Kamakou  4,961 A) Radius of earth= 3960 mi. Determine angle formed at the center of the earth. B) Determine length of the hypotenuse. Could someone go
asked by Amy~ 
Chemistry
phosgene an equilibrium reaction is the formation of phosgene an equilibrium reaction? how can you tell
asked by John 
Roles of Women
How does this relate to life for women colonists in the wilderness of upper Canada? Okay so they both had to take care of their families and had to do all the housework, the women colonists in the wilderness of upper canada helped with the farming too.
asked by Emma 
algebra
Please Solve! ln= 1/e3 (e to the third power)
asked by Katieneedsyourhelp