# Posts by Lee

Total # Posts: 906

**Chemistry**

The Ksp values of BaSO4 and SrSO4 are 1.1x10^-10 and 3.8x10^-7 respectively. Calculate the concentrations of Ba2+, Sr2+, and SO4 2- in a solution that is saturated with BaSO4 and SrSO4.

**statistics**

A researcher finds that two continuous, random variables of interest, X and Y, have a joint probability density function (pdf) given by: f(x,y)={cxy 0<=x<=1,0<=y<=1,x+y=>1, .........0 otherwise where c is a constant. (i) Find the value of c so that f(x,y) ...

**statistics**

You want to set up a games stall at the Winter Wonderland. You have a single pack of 52 cards and decide to play card games with your customers. The game is designed as follows. A customer draws 4 cards at random. For every “Ace” that the customer draws, he/she wins...

**statistics**

You want to set up a games stall at the Winter Wonderland. You have a single pack of 52 cards and decide to play card games with your customers. The game is designed as follows. A customer draws 4 cards at random. For every “Ace” that the customer draws, he/she wins...

**chin**

The following data shows the annual salaries of 12 randomly selected employees of a company (in £ 1000’s) on the X-axis and the average number of days they have taken days off work in the last 10 years on the Y-axis. Y X Y X 11.1 29.6 9.6 39.2 8.4 58.6 10.9 46.8 8.7...

**chin**

You want to set up a games stall at the Winter Wonderland. You have a single pack of 52 cards and decide to play card games with your customers. The game is designed as follows. A customer draws 4 cards at random. For every “Ace” that the customer draws, he/she wins...

**English**

Would down to earth be considered a character trait?

**Algebra**

"If possible, completely factor the expression. (If the expression is not factorable, enter NF.) x2 − 6x − 7"

**social studies**

why did a land bridge emerge between asia and north america

**History**

What was Thomas Jeffersons stance on the Declaration of Independence?

**algebra**

Foursquare provides a service that allows your friend to know your whereabouts by checking in . From march 2010 to march 2011 it experienced amazing growth. The function : F(x)=1/18x^2 - 1/12^x + 1/2 Evaluate F(3)? Determine when foursquare had 4.25 million users ?

**algebra**

suppose that an employee receives 7% increase in salary each year and that sequence a^n models the employees salary after n years. Is this sequence arithmetic, geometric or neither ? and please explain

**Algebra**

Darren McFadden of Arkansas placed second overall in the Heisman Tophy voting. Players are given 3 points for every first place vote, 2 points for every second-place vote, and 1point for every third place vote. McFadden received 490 total votes for a total of 878 points. If he...

**English**

What is your stance on BASE jumping

**English**

Are the authors stance and opinion similar ? Can you give me an example of each?

**History**

What is the importance of Samuel de Champlain colonizing Quebec for France

**History**

What is the importance or effect of these 1. France is a latecomer in the scramble for New World real estate. 2. French Catholic missionaries, notably the Jesuits, labored zealously to save the Indians for Christ and from the fur-trappers. 3. William Pitt, the elder, becomes ...

**English**

Can you help me come up with a really good introduction for my essay of the narrative of the life of Olaudah Equiano, that deals with his opinion of white men on the ship .

**Math**

you complete 3 cm of a necklace in1 hour. Each hour after the first hour you triple the length of the necklace. What is the length of the necklace after 3 hours?

**English**

How does the perspective of white crewmen toward the captives help support the main idea in "from the Interesting Life of Olaudah Equiano"

**English**

What is the relationship between literature and place

**Pre-Calculus**

Hello! Can someone check and see if these answers are correct? Thanks! 1.) If a line with slope of 1/2 is perpendicular to another line, then the slope of the other line is -2. TRUE or FALSE? (I choose True) 2.) If Segment QR || Segment TU and the slope of Segment TU is -3, ...

**microeconomics**

Using MS Excel or a table in MS Word, complete Table-1 (Joseph Farms, Inc., Cost and Revenue Data). Assume that the price is $165. Assume the fixed costs are $125, at an output level of 1. Assume that the data represents a firm in pure competition. Show your calculations. ...

**Physics**

A sailboat runs before the wind with a constant speed of 4.0m/s in a direction 34∘ north of west. how far west has the sail boat traveled in 29 minutes

**math**

calculate the resistances of (a) 100-watt 120-volt incandescent lamp, (b) a 750-watt 115-volt toaster, (c) a 1300 watt 110-volt portable iron.

**Corporate Finance**

180000

**Org Chem**

Caffeine has a distribuation coefficient of about 8 between Me Cl2 and water. Given 30ml of water containing 10 grams of caffeine. a. How much caffeine can be extracted with one 30mL portion of MeCl2? b. How much caffeine can be extracted with three 10mL portions of Me Cl2? c...

**accounting**

72200

**math**

A right cone has a height of 8cm and of volume of 250cm^3. Determine the radius of the base of the cone to the nearest centimeter.

**math**

44

**math**

How much money I saved if I follow this number pattern 5,10,15,?20?30

**troy Academy**

which of the following statements is the best supported by the new studies

**troy Academy**

based on the results of the studies, what should an elementary school teacher do to ensure that a child with an unusual name develops normal intellectual ability

**troy Academy**

the overall effect of the five amendments was to extend the vote to

**troy Academy**

a comparison of the average temperatures on any given day at points Z, X, and U on the globe would probably show that the temperature at point X is

**TROY Academy**

president kennedy was calling on u.s citizens to

**statistics**

It is known that the population mean for the Quantitative section of the GRE is 500, with a standard deviation of 100. In 2006, a sample of 400 students taking the GRE, whose family income was between $70,000 and $80,000, had a quantitative GRE score of 511. Perform a one-...

**statistics**

The Good Mental Health Insurance Company has determined the number of new clients a psychologist gets per month and their respective probabilities, as shown in the table below: Number of New Clients Probability 0 0.05 1 0.10 2 0.15 3 0.35 4 0.20 5 0.10 6 0.05 The probability ...

**statistics**

A standardized third grade reading test, called the We Can Read Test, has a mean of 50 with a standard deviation of 10. A developmental psychologist conducts a study, where he assesses the reading ability of a random sample of 75 third graders using the We Can Read Test, and ...

**statistics**

A standardized third grade reading test, called the We Can Read Test, has a mean of 50 with a standard deviation of 10. A developmental psychologist conducts a study, where he assesses the reading ability of a random sample of 75 third graders using the We Can Read Test, and ...

**statistics**

The Good Mental Health Insurance Company has determined the number of new clients a psychologist gets per month and their respective probabilities, as shown in the table below: Number of New Clients Probability 0 0.05 1 0.10 2 0.15 3 0.35 4 0.20 5 0.10 6 0.05 The probability ...

**statistics**

A standardized third grade reading test, called the We Can Read Test, has a mean of 50 with a standard deviation of 10. A developmental psychologist conducts a study, where he assesses the reading ability of a random sample of 75 third graders using the We Can Read Test, and ...

**math**

if a car has decreased in value by 10% and is now worth 22,000.00 how much was the original price

**Finance**

24.34

**math-Algebra**

Anonymous: Your answer is INCORRECT. The correct formula is: k=xy k= 8*10 k=80 y=80/x y=80/6 simplify the fraction to y=40/3. I am a homeschool teacher.

**English**

peace I beleive

**math**

k-3/7k=-6/7 3.5+6.4x=x-3.4

**Statistics**

Assume it is known that the probability of birth is equal in all months. What is the probability that in the STAT class of 120 students, exactly 20 students have their birthdays in either August or September? Solve using (i) the exact Binomial distribution, (ii) the Normal ...

**Math**

Assume an annual 6% return and annual compounding if Tara saves $2000 a year for 40 years how much money would she have at the end?

**algebra based physics**

24m/s

**math**

Select the sum of the series E^5k=1^k2.

**math**

Select the first five terms in the arithmetic sequence an = 8n, starting with n = 1

**physics**

a 50-N force is directed at an angle of 50 degrees above the horizontal. resolve this force into vertical and horizontal components.

**math**

Determine the equation of g(x) that results from translating the function f(x)=x^2+9 upward 15 units. A)g(x)=(x+24)^2 B)g(x)=(x + 15)^2+9 C)g(x)=x^2-6 D)g(x =x^2+24

**math**

Select the approximate values of x that are solutions to f(x) = 0, where f(x) = -6x^2 + 4x + 7.

**math**

Determine the equation of g(x) that results from translating the function f(x) = x^2 + 9 upward 15 units

**math**

f(x) = (x + 2)^2 to the right 12 units

**math**

Solve for in the equation x2 - 3x - 40 = 0.

**math**

Determine the equation of g(x) that results from translating the function f(x) = x^2 + 9 upward 15 units

**math**

The range of f(x) = ax + b is the set of all real numbers given that a and b are real numbers. Which produces a counter example to her statement?

**history help plzzzzzz**

@lolz is right!!! that was extremely rude

**math**

Write an equation that uses 18 - ? and 10 + 2. Explain how to decide which numbers would make it true.

**Physics**

A car traveling at a velocity of 24 m/s is accelerated uniformly at a rate of 2 m/s¶ for 8 seconds. What is the final velocity of the car?

**Physics**

Police find skid marks 180 meters long on a highway where a car made an emergency stop. Assuming that the deceleration was a = 10 m/s¶ (about the maximum for dry pavement), how fast was the car traveling before the brakes were applied?

**Quantitative Analysis**

Ethical

**Calculus**

A 17 foot ladder is leaning against a wall. The bottom of the ladder is moving out away from the wall at 0.6 feet per second. The top of the ladder then begins sliding down the wall. How fast is the top of the ladder going when the bottom is 8 feet away from the wall?

**Math**

how did you get BE=32?

**Flowers for Algernon book**

Think about all the times knives or razors appeared in the story. How could they be symbolic?

**Flowers for Algernon**

Explain Charlie's problems with women. Why does he have trouble getting close to them?

**STATISTICS**

79%

**health**

ms. sue you don't have to be disrespectful with it, all their asking for is help nothing more nothing less so chill out!

**calculus**

x/a^2+y/b^2-z/c^2=1

**World history**

Well it's definitely not C!!

**accounting**

•The Bank Account as a control device that helps to protect cash. One of the requirements is to conduct periodic bank statement reconciliations. Using the following data, complete a bank statement reconciliation or EEE Electric for the month of September. The Bank ...

**accounting**

•XYZ Company signed an 18-month, $20,000, 8% note on June 1, 2006. The amount of interest to be accrued on December 31, 2006, assuming no prior interest entry is:

**economics**

Explain the economic logic behind OPEC decision to reduce output

**Health**

A - Thigh

**Geometry**

What is the perimeter and area of a rectangle that has a width of 6 inches and length of 8 inches

**Math**

The hexagon below is made up of six equilateral triangles with sides of 6 centimeters each. The height of each triangle is 5.2 centimeters. What is the area of the hexagon

**Math**

Do you need to regroup to find product of 34 and 3? Explain

**economics**

What are welfare payments or consumer subsidies?

**english home language literature**

What does the opening sentence imply about Gatsby's parties?

**chemistry**

Balance the following redox reaction by inserting the appropriate coefficients. H^+ +CrO4^2- +NO 2^- =Cr^3+ +H2O+NO3^-

**chemistry**

If a solution containing 34.576 g of mercury(II) perchlorate is allowed to react completely with a solution containing 10.872 g of sodium sulfate, how many grams of solid precipitate will be formed?

**chemistry**

Baking soda is sodium bicarbonate, NaHCO3, and vinegar is primarily acetic acid, HC2H3O2. When baking soda is added to vinegar, the resulting reaction produces a tremendous amount of gas, as shown in this video. Complete this equation for the reaction of NaHCO3(s) with HC2H3O2...

**chemistry**

Write the net ionic equation (including phases) that corresponds to Fe(ClO4)2(aq)+Na2S(aq)=FeS(s)+2NaClO4(aq)

**chemistry**

59.0 mL of a 1.40 M solution is diluted to a total volume of 278 mL. A 139-mL portion of that solution is diluted by adding 129 mL of water. What is the final concentration? Assume the volumes are additive.

**chemistry**

Write the balanced chemical equation for the Habor-Bosch process, that is, the combination of nitrogen and hydrogen to form ammonia, NH3. Phase symbols are optional.

**chemistry**

Write the equation for the decomposition of water into its elements. Phase symbols are not graded.

**chemistry**

What NaCl concentration results when 279 mL of a 0.640 M NaCl solution is mixed with 427 mL of a 0.490 M NaCl solution?

**chemistry**

You have 67.0 mL of a 0.400 M stock solution that must be diluted to 0.100 M. Assuming the volumes are additive, how much water should you add?

**math**

the world record for the men's long jump is 29 3/8 feet. the women's record for the same event is 24 88/48 feet. How many feet longer is the men's record?

**maths**

How many shirts 7 seamtresses can make 10days. If 5 seatmtresses can make 3 shirts in 3 days

**economics**

A subsidy is a grant given by one party

**algebra**

So tired of asking for help ane never getting it. Whats the purpose of this site then?

**algebra**

For problems 13 and 14, assign each letter and a blank space to a number as shown by the alphabet table below. Use the code [1,-2_-3,7] encode the phrase "ONE QUESTION TO GO" The matrix C=[1,-2_-3,7] was used to encode a phrase to [7,-28,-25,-35,-2_-21,107,90,123,17...

**algebra**

For problems 13 and 14, assign each letter and a blank space to a number as shown by the alphabet table below. Use the code [1,-2_-3,7] encode the phrase "ONE QUESTION TO GO" The matrix C=[1,-2_-3,7] was used to encode a phrase to [7,-28,-25,-35,-2_-21,107,90,123,17...

**algebra**

Ok I see I was not multiplying the right numbers. Thanks for clarifying for me.

**algebra**

Can anyone help explain how to work this problem out? One factor in flood safety along a levee is the area that will absorb water should the levee break. the coordinates that make up the boundry area are (0,0),(2.8,2.1)and(4.3,4.4) what is the area of the land that would ...

**chemistry**

determine how many grams of N2 are produced by 9.12 g of H2O2 and 6.90 g of N2H4. 2H2O2+N2H4= 4H2O+N2