Wednesday
July 30, 2014

Posts by D


Total # Posts: 290

Macroeconomics
D Marginal Cost

statistics
In a survey of 400 college students, 40 were left-handed. Treating the sample as if it were random and using 0.015 as the standard deviation of the sampling distribution of the sample proportion, what is the lower bound of a 95% confidence interval for the population proportion?

marketing
Unit 5 Individual Project Deliverable Length: 4-5 body pages, 1 PERT chart, 1 Gantt chart Details: Using your current work organization (or an organization of interest) as the subject matter, research the elements of business and prepare an APA formatted paper that: Analyzes ...

Calculus
2) 2*x*e^(-4) 3) 2*x*e^(sin(x))+x^2*cos(x)*e^(sin(x)) 1) e^(x)*sin(x)^2+2*e^(x)*sin(x)*cos(x)

maths
a) 1/6,1/7,1/8,...

Science
idk!!

simple subject
What is the simple subject in: The black and white Schnauzer barked all day long.

math
0.009615

biology
Why is a denaturing solution used in the Southern blotting technique?

physics
DOnt know

chemistry
32.2

math
how many line segments are in the word FAME?

algebra
how do you solve -x+2y=2

Physics C
A point charge of 5.5 µC is located at the center of a spherical shell of radius 30 cm, which has a charge −5.5 µC uniformly distributed on its surface. Given: ke = 8.98755 × 10^9 Find the electric field for a point inside the shell a distance 12 ...

World Civ
What were the social and administrative foundations of the absolute power of Ming Quing emperors?

World Civ
What were the social and administrative foundations of the absolute power of Ming Quing emperors?

World Civ
How did advances in military technology change warfare in 16th century Japan? How was the strategic balance of power reflected in the government created by Tokugawa leyasu?

World Civ
Why were so many people living in the European countryside dependent on aristocracy? (during and before the agricultural revolution in Europe)

geometry
Quadrilateral QRST is a square. If the measure of QR is 3x – 6 and TS is 6 - x. Find the area of the square.

english
Actually, can you just post your email address, and then we can figure stuff out through email?

english
When you get the answers to the final....please post them!

english
Explain your changes?

english
Explain your changes?

home economics
When were the Home Economics Courses dropped or greatly reduced by the school system in Ontario.

Calculus 1
If you have 280 meters of fencing and want to enclose a rectangular area up against a long, straight wall, what is the largest area you can enclose?

Physics
Air in a balloon does 25 J of work while absorbing 81 J of heat. What is the change in internal energy?

Ashford
Beth gives Megan $2 allowance a week. Then she takes Megan shopping and allows her to select what she wants to buy. If the item desired costs more than $2, Megan's mother suggests she save her money until she has enough saved to pay for the desired item. When Megan purchas...

Maths Grade 8
fart

Algebra
Rewrite -81/(-88) as multipulcation

Algebra
whats the answer for 14(3-7x)=-(9+2x) with simple steps on how to do it

specific heat capacity
figured it out.

specific heat capacity
How much heat would be required to heat 1 gram of pure liquid water from 10C to 20C? How would i approach this problem?

math
how do yo convert hte ratio 120:200 to a fraction in simpliest form

Math
Jake says that adding 0 does not change a sum. Is he correct? explain.

Math
Ms. Poole, my PE teacher, asked the 100 seventh in my school if they could swim. Half the boys and two thirds of the girls said yes. Seventeen boys said no. How many seventh graders know how to swim?

Chemistry
When 1.0 g of gasoline burns, it releases 11 kcal of heat. The density of gasoline is 0.74 g/mL a) How many megajoules are released when 3.0 of gasoline burns? b) If a television requires 150 kJ/h to run, how many hours can the television run on the energy provided by 3.0 gal ...

chemistry
When 1.0 g of gasoline burns, it releases 11 kcal of heat. The density of gasoline is 0.74 g/mL a) How many megajoules are released when 3.0 of gasoline burns? b) If a television requires 150 kJ/h to run, how many hours can the television run on the energy provided by 3.0 gal ...

american history
what is one reason colonist came to america

Chemistry
A sample of 0.43 moles of a metal M reacts completely with excess chlorine to form 18.23 grams of MCl. How many moles of Cl are in the sample of MCl that forms?

criminal law
thank you Ms. sue

criminal law
Describe current parole and mandatory release policies

math
Simplify: (3-7x)/8+(2x+3)/8

geometry
Given the quadrilateral ABCD with the following vertices A(-4, 0), B(10, 0), C(10, 10), and D(0, 14), find its area.

geometry
Consider the following. newskills15 Solve for BC (the the nearest hundredth).

Precalculus
Consider the following. f\(x\) = 5tan(1/3 x + pi/2) The period of the function above is ...

geometry
In ΔABC, angleB = 46°, angleC = 28° and AB = 50. Find BC (to the nearest hundredth).

chem
calculate the amount of heat (kcal) released when 50.0 g of water at 100degrees Celsius hits the skin and cools to a body temperature of 37 degrees Celsius.

chemistry
calculate the volume of sulfur dioxide produced when 27.9 mL O2 reacts with carbon disulfide to produce carbon dioxide and sulfur dioxide at STP

physics
(c) Tube (c) is again filled with water. A1 and A2 are the same as in part (b). Two pistons apply different forces to the water in the tube so that the water in the right side of the tube is a height h = 0.43m above the height of the water in the left side of the tube. If F2 =...

e-commerce
The business plan should include the concepts and ideas covered during the past several weeks. The following points need to be addressed in your business plan for the establishment of an e-commerce site: The e-commerce infrastructure Marketing concepts for the e-commerce envir...

Math 116
Use all available methods (in particular, the Conjugate Roots Theorm if applicable) to factor the polynomial function completely, making use of the given zero, f(x)=x^4+x^3+4x^2+196x-2205; -7i is a zero.

calculus
A missile is fired at an angle of 75 from the horizontal. At one point, its speed was 900 mph. Find its horizontal velocity in miles per minute

math
The probability is 1 in 4,000,000 that a single auto trip in the United States will result in a fatality. Over a lifetime, an average U.S. driver takes 50,000 trips. (a) What is the probability of a fatal accident over a lifetime? Explain your reasoning carefully. Hint: Assume...

chem
Magnesium burns in air to produce magnesium oxide, MgO, and magnesium nitride, Mg3N2. Magnesium nitride reacts with water to give ammonia. Mg3N2(s) + 6 H2O(l) → 3 Mg(OH)2(s) + 2 NH3(g) What volume of ammonia gas at 24°C and 753 mmHg will be produced from 4.46 g of ma...

Physics Mehanics
A meter stick is held vertically with one end on the floor and is then allowed to fall. Find the speed of the other end when it hits the floor, assuming that the end on the floor does not slip. (Hint: Consider the stick to be a thin rod and use the conservation of energy princ...

Physics Mehanics
In the figure below, wheel A of radius rA = 11 cm is coupled by belt B to wheel C of radius rC = 23 cm. The angular speed of wheel A is increased from rest at a constant rate of 1.6 rad/s2. Find the time needed for wheel C to reach an angular speed of 110 rev/min, assuming the...

Physics Mechanics
Thanks a lot. Your answer are both right. Thank you so very much.

Physics Mechanics
Particle A and particle B are held together with a compressed spring between them. When they are released, the spring pushes them apart, and they then fly off in opposite directions, free of the spring. The mass of A is 3.00 times the mass of B, and the energy stored in the sp...

Physics Mechanics
Thank you so much drwls. You're a life saver. Thanks a lot! :)

Physics Mechanics
A banked circular highway curve is designed for traffic moving at 57 km/h. The radius of the curve is 211 m. Traffic is moving along the highway at 48 km/h on a rainy day. What is the minimum coefficient of friction between tires and road that will allow cars to negotiate the ...

Physics
Suppose that the terminal speed of a particular sky diver is 170 km/h in the spread-eagle position and 315 km/h in the nosedive position. Assuming that the diver's drag coefficient C does not change from one position to the other, find the ratio of the effective cross-sect...

Precalc
Its #2 which is 3 because you add all the degrees of all the parenthesis and add them up and that's ur answer

Science
Its 133.88 degree Celsius.. Hope it helps :)

Physics
In a pickup game of dorm shuffleboard, students crazed by final exams use a broom to propel a calculus book along the dorm hallway. If the 3.5 kg book is pushed from rest through a distance of 0.87 m by the horizontal 25 N force from the broom and then has a speed of 1.58 m/s,...

Algerbra 1
4.50

Chem (but i think its physics)
203lbs= 902.94N 110ft= 33.528m 902.94*33.528*3=90 822J 90822J* 1Calorie/(4184J) = 21.7

Chem (but i think its physics)
Ok so this problem appeared in my online chem homework, but it looks alot more like a physics problem. I have no idea how to do it A 203 lb man eats an order of French Fries consuming 250 Cal of food energy. Afterwards he feels guilty and decides to work off the excess calorie...

8th grade science
what voltage produces a current of 500 amps with a resistance of 50 ohms?

chemistry
Sorry Doc but the satallite is 30 miles above the earth and the question states there and back. please check again.

Chemistry
What is the molality of a solution of sucrose(molar mass=342) dissolved in water that is 25% sucrose by mass?

chemistry
Which of the following properties increase with increasing atomic number for fluorine and chlorine? I. melting point of the elements (yes) II. boiling point of the hydrogen halides i'm not sure about II because HF has the highest boiling point but fluorine and chloride fit...

chemistry
Which of the following properties increase with increasing atomic number for fluorine and chlorine? I. melting point of the elements (yes) II. boiling point of the hydrogen halides i'm not sure about II because HF has the highest boiling point but fluorine and chloride fit...

chemistry
At 100 degrees celsius, the ratio of the average kinetic energy of oxygen molecules, O2, to the average kinetic energy of methane molecules, CH4, is: A) 4:1 B) 1:4 C) 1:2 D) 1:1 I think it's D because the kelvin temperature is the same for both collection of gases, and und...

physics
at what angle with respect to the horizontal should the shot put be launched if the starting height is 2.0m to have the greatest range?

12th grade
Firm A offer 40,000 salary with $2,000 increase evey year. FIRM B offer 38,500 salary with 5% increse every year. After how many year he will make same money?

Chemistry
Before 1962,dimes minted in the US contained the precious metal silver.A 2.08 gram dime is dissolved in nitric acid and reacted with saturated sodium chloride solution. This process precipitates all the silver in the dime as 342mg of AgCl(s). How many moles of silver did the d...

Chemistry
Before 1962,dimes minted in the US contained the precious metal silver.A 2.08 gram dime is dissolved in nitric acid and reacted with saturated sodium chloride solution. This process precipitates all the silver in the dime as 342mg of AgCl(s). How many moles of silver did the d...

earth
A cold front traveling at an average speed of 35 km/h eastward is 280 km due west of you. Appoximately how long will it be before your location experiences a sudden temperature drop?

Algebra
120

Algebra
120

test
235U 92

Chemistry
Example: 235U 92

algebra
how can 2 boys weighing 100lbs each and a man weighing 200lbs cross the river in a boat that only holds 200lbs safely?

English
There is

5th grade
if 5/17 of region is shaded what part is not?

Calculus
A particle moves in a straight line with velocity t^-2 - 1/9 ft/s. Find the total displacement and total distance traveled over the time interval [1,4]. I found out that the total displacement is .4116 But I cannot find the total distance traveled.

Physics
where did the 3x/5 come from

AP Chemistry
What is the Dumas Method in regards to the molas mass of a gas?

AP Chemistry
The molar mass of a volatile liquid (one which vaporizes easily) can be determined by a the DUMAS METHOD.' In this process a small amount of the liquid (a few drops) is placed in a clean flask. The mouth of the flask is covered with a piece of foil that has a small hole (p...

physics
balls

chem
What is the pH of 0.2 M HN3?

physics
idk

History
when i said even the hebrews tried to secure their race i meant before the world wars.

History
when i said even the hebrews tried to secure their race i meant before the world wars.

History
LBN means white in akkadian and they were a peaceful people. Hitler decided to take the sigma doubled as his symbol as it dealt with what he thought he was being the furor after the king named sin. which was also akkadian. Illuminati have thier roots in this in tales dealing w...

History
Anglo saxons get thier start in akkadian for LBN or palestine which is lebanon so i am led to think. It deals with old ritualistic root philosophies on the beginning of the histories of the civilizations which was the dragon then the beast then the lamb like beast. Sargon firs...

Chem
5. The LC50 for fluorine is 0.29 mg/m3. What is this in ppm at 25 oC and 1 atm pressure? How does this compare to the PEL?

College Chem
Recycling of PET soft drink bottles involves heating with methanol and an acid catalyst to liberate ethylene glycol and dimethylterphthalate (methyl ester of pthalic acid). These can then be used as monomers to make new PET products. Write an equation for this recycling reaction.

College Chem
How many liters of carbon dioxide at 20 oC and 750 torr are produced when one gallon of toluene is burned? C7H8 + 9O2 ==> 7CO2 + 4H2O 1 gallon toluene = about 3,785 mL density = about 0.867 g/mL mass toluene = 3785 mL x 0.867 g/mL = 3282 grams. moles toluene = grams/molar m...

nothing
so how does this website work?

Pages: <<Prev | 1 | 2 | 3 | Next>>

Search
Members