Thursday
July 24, 2014

Posts by Rachael


Total # Posts: 151

Managerial Economics
Why the cost structure associated with many kinds of information goods and services might imply a market supplied by a small number of large firms.

chemistry
Calculate the pH for each of the following cases in the titration of 25.0 mL of 0.180 M pyridine, C5H5N(aq) with 0.180 M HBr(aq): 1)before addition of any HBr 2)after addition of 12.5 ml of HBr: 3)after addition of 16 ml of HBr: 4)after addition of 25 ml of HBr: 5)after additi...

everest
What number is 45% of 680

math
B independent

math
A researcher was interested in the emotional effects of music on exam performance. Before their exam, a professor took one group of students into a room in which calming music was played. A different group of students were taken to another room in which new wave hard rock was ...

Math
Suppose that the service rate to a waiting line system is 10 customers per hour (exponentially distributed). Analyze how the average waiting time is expected to change as the arrival rate varies from two to ten customers per hour (exponentially distributed)

math
Four key marketing decision variables are price (P), advertising (A), transportation (T), and product quality (Q), Consumer demand (D) is influenced by these variables. The simpiest model for decribing demand in terms of these variables is: D = k - pP + aA + tT + qQ, where k, ...

math
If 30 samples of 100 items are tested for nonconformity, and 95 of the 3,000 items are defective, find the upper and lower control limits for a -chart.

math
If 30 samples of 100 items are tested for nonconformity, and 95 of the 3,000 items are defective, find the upper and lower control limits for a p-chart.

math
In developing a multiple linear regression model in excel. How do I find the x and Y inputs. How do I find a 95% confidence interval for the mean market value for houses that are 30 years old and have 1,800 sq ft, and 95% prediction interval for a house that is 30 years old wi...

math
Consider the experiment of drawing two cards from a deck in which all pictures cards have been removed and adding their values (with ace =1). A. Describe the outcomes of this experiment. List the elements of the sample space. B. What is the probability of obtaining a total of ...

math
Consider the experiment of drawing two cards from a deck in which all pictures cards have been removed and adding their values (with ace = 1). A. Describe the outcomes of this experiment. List the elements of the sample space. B. What is the probability of obtaining a total of...

Math
Liked your answer, did not see it the first time, thanks!

Math
Consider the experiment of drawing two cards from a deck in which all picture cards have been removed and adding their values (with ace = 1). A. Describe the outcomes of this experiment. List the elements of the sample space. B. What is the probabilit of obtaining a total of 5...

algebra 3
identify the greatest common factor then factor expression x^2+9x+47

Calculus
If F(x)=x^3−7x+5, use the limit definition of the derivative to find FŒ(5), then find an equation of the tangent line to the curve y=x^3−7x+5 at the point (5, 95). FŒ(5)= The equation of the tangent line is y = x + . Check your answer for your...

algebra
If the opposite of x is -x, then their sum is 0, however, if the opposite of x is 1/x, then their sum is (x+1)/x

Social Stuides
wat?

Social Stuides
The People's Party grew out of a response to falling cotton & wheat prices in the South & trans-Mississippi West. The Farmers' Alliance, formed in TX in 1876, promoted collective economic action by farmers.

chemistry
concentrated sulfuric acid is typically 18.1 M H2 SO4. Calculate the volume in mL of concentrated sulfuric acid needed to prepare 125 mL of a 0.100 M H2SO 4 solution

physics
Electric field at a distance r from a charge q is given by Coulomb's law: E = k q / r^2 To get the E-field, you have to add the contribution of 3 charges: E1 = k q1 / r1^2 E2 = k q2 / r2^2 E3 = k q3 / r3^2 You can look at the geometry and so simple addition and subtraction...

maths
Given the the instantaneous voltage across a capacitor is VC=40(1-e -t/CR) Volts When being charged by a 40 volt DC supply, find the time, t for VC to reach 18 volts after the charging process has started if C = 100ìF and R = 20kÙ

AP Calculus
Two ships sail from the same port. The first ship leaves port at 1:00a, and travels eastward at a rate of 15 knots. the second ship leave port at 2:00am and travels northward at a rate of 10 knots. Determine the rate at which the ships are separating at 3:00am

chemistry
How many grams of HCL must be added to make 1 liter of a 2.0 M HCl solution?

chemistry
How many grams of HCL must be added to make 1 liter of a 2.0 M HCl solution?

Stats
A class of 85 students writing an exam had a mean mark of 74.2 write down the total sum of the 85 grades.

UOP RES 342
Use the numerical data from one of the data sets provided. · Develop one business research question from which you will formulate a research hypothesis that will test two or more populations. · Prepare a 250 word paper describing the results of a hypothesis test ...

physics
"A cab driver picks up a customer and delivers her 3.31 km away, driving a straight route. The driver accelerates to the speed limit and, upon reaching it, begins to decelerate immediately. The magnitude of the deceleration is 4.70 times the magnitude of the acceleration....

Chemistry
Given that the specific heat capacities of ice and steam are 2.06 J/g degrees celsius, respectively, and considering the information about water given in exercise 16, calculate the total quantity of heat evolved when 10.0g of steam at 200. degrees celsius is condensed, cooled,...

PHYSICAL SCIENCE PLEASE HELP REALLY APPRECIATE IT!
Thank You So Much! ^_^

PHYSICAL SCIENCE PLEASE HELP REALLY APPRECIATE IT!
In the reaction between bromine and sodium, a bromine atom gains an electron. What ion is formed? Is the bromine oxidized, or is it reduced? Thank You ^_^

physics
A block is released on an inclined plane from a height of 1m. There is friction (static and kinetic =.4) and the mass of the block is 5 kg, the mass of the pulley is 1 kg and it has a radius of 5 cm. The slope of the incline is 30 degrees. Find the acceleration of the block as...

Grammar
Actually, #1,#2, and #4 are correct. Just took this test a few minutes ago...

Grammar
Actually #2 is correct. Just took this y test.

algebra 1
N decreased by 12 is greater than or equal to 11?

algebra 1
N decreased by 12 is greater than or equal to 11?

Physics
A football is punted up into the air and it lands 5 seconds later. How high did the did the football reach it's highest point and when does it reach this height?

College Geometry
A circular grassy region with a 12 ft diameter has a 2ft by 3ft reflecting pool in its center. What is the Surface Area of the reflecting pool? What is the Area if the grass?

economics
1. Pick a business that you are familiar with and list three (3) fixed and (3) variable inputs associated with that business. 2. What are some things that you think that business could do to reduce their costs? Why?

Chemistry
Identify the acid or base behavior of each substance in this reaction: H2PO4 + H2O <----> H3O+ + HPO4-

Chemistry
Show that the pH of a solution is -0.301 when its hydronium-ion concentration equals 2 M. Is the solution acidic or basic?

Ethics
what measurements do sociologists utilize to calculate prejudice

trig
solve each equation for 0 less than or equal to x greater than 2ð. cot²x-cscx=1 thanks:) step by step please :)

Chemistry
The Ka value for ethanoic acid is 1.8x10^-5, what would be the pH of a 2.0x10^-2 M solution of ethanoic acid?

Chemistry
The Ka value for ethanoic acid is 1.8x10^-5, what would be the pH of a 2.0x10^-2 M solution of ethanoic acid?

science
which chromosome is breast cancer located on?

Chemistry
The question is: Hydrogen and oxygen gas combine explosively to produce water. Write a balanced chemical equation for this process. If 10 mol of hydrogen reacted with oxygen, what volume of liquid water could be produced? Is this right for the balanced equation? 4H + O₂ ...

Chemistry
The question is: Isotonic saline is a 0.9% (g/100ml) solution of salty water. You are asked to make up 2L of isotonic saline. How much salt should you weigh out? I got the answer of 18g with the following working: 9 ÷ 1000(ml) x 100 = 0.9 Therefore 9% of 1000ml (1L) is ...

math
A helicopter is 400 miles directly north of Ghana and is flying at 20 miles per hour. A second helicopter is 300 miles east of Ghana and is flying west at 15 mph. What is the rate of change of the distance between the helicopters?

10th grade
48

algebra
Is the relation y> the absolute value of x+3 a function? Why?

math
TUESDAY

algebra
How do i compute the track of two circles one with a diameter of 100 feet, the other with a diameter of 200 feet? The question asks me to compute the length of the track with these two circles touching each other at a single point.

arithmetic
cross sectional area*length

math
The height, in feet, of a free-falling object t seconds after being dropped from an initial height s can be found using the function h = -16t2 + s. An object is dropped from a helicopter 784 feet above the ground. How long will it take the object to land on the ground?

arithmetic
1/4*3=3/4

reading
What is an appositive?

6th grade math HELP
You have a triangle that measures 180 degrees. AB is 4 units. the measure of BC is 5 units. The measure of CD is 12 units. What is the measure of DE and how did you get that answer?

6th grade
The measure of AB is 4 units, the measure of BC is 5 units and the measure of CD is 12 units. Find the measure of DE?

math
12

math
the answer is 12

Arithmetic
1 litre per bottle

chemistry
The Burning MG in CO2 reaaction had deltaG=-746 kJ/mol at 298K. Calculate the equilibrium constant for this reaction.

arithmetic
1/4

HCA/220
need help writing a soap note with five medical words out of chapters 6,7,8

math
Suppose that the multiplication and division keys on your calculator were broken. Explain how you can calculate 452 x14 by using other keys on the calculator.

Physics
Two young sisters with a combined mass of 75 kg ride on a cart of mass 30.0kg travelling at 2.0 m/s. If they jump off together so they land with zero speed relative to the ground, what is the change in speed of the cart?

Investigation
Conduction, convection, or radiation? The heat yuo feel from a fireplace

arithmetic
3/8

spanish
How do i say i dont like history?

arithmetic
20

math
53

english
What are the adjectives in each of the following: 1. A quarter will not buy very much. 2. Do you need any food for the party?

arithmetic
2.911

Social Studies
Who were the first Native American groups to settle in Ottawa, Illinois? Where did they come from? What kind of people were they?

arithmetic
Steves mom is 47 and Steve is 18

arithmetic
Steves mom is 47 and Steve is 18

Math
first number is 910/39,the second one is 3601/13and the third one is 2/3

arithmetic
7/16

arithmetic
100

math
72

arithmetic
1.423760 2.4 years

arithmetic
423760

Art history
what are the major connections between the ashcan schools ethics and todays documentary photogrphers such as nan godin and corrine day?

yr8 geography
not much help but thanks for helping

yr8 geography
my homework assignment is to colour the tributary of the river tees but i am struggling. i don`t know where to colour. please help

alegebra
a stone is thrown into a cylindrical water tank 2 feet in diameter, causing it to rise 1.5 inches. what is the volume of the stone?

english
Why, you're welcome. Tell me what you come up with and then I'll still help you.

english
Go to google and type in two opposing arguments about tattoos. Then keep scrolling down until you reach the bottom. Then click that. You can read all about that. It may help out.

Math
Thanks

Math
Thanks

Math
What are the 3 numbers that com after trillion. I'm talk about this- Ex: million then billion. I want to know what comes after trillion 3 times.

Math
Hahaha!!! oh know! what am i gonna do??

math
lkeruosehgnvshfdsjfkljurfeoiwajrtknfdn vjeoipajrsekaf

math
What??

math
yups it was! lol

math
lmfao. i was kdding. that was hilarious

math
8+2=400

Math
lol.

Math
thanks

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