# KIm

Popular questions and responses by KIm-
## statistic

A lottery ticket has a grand prize of $28 million. The probability of winning the grand prize is .000000023. Based on the expected value of the lottery ticket, would you pay $1 for a ticket? Show your calculations and reasoning clearly.

*asked on August 27, 2010* -
## math

In the middle of the page, draw two circles an inch apart. Then draw a slight arch going up from the right edge of the left circle to the left edge of the right circle. Then draw a diagonal line out from the left edge of the left circle. This line should

*asked on February 29, 2016* -
## chemistry

Identify the neutral element represented by this excited-state electron configuration, then write the ground-state electron configuration for that element. Excited State: 1s2 2s2 2p2 3s1 Element Symbol: ? Ground State: ?

*asked on September 30, 2013* -
## Calculus Help Please!!!

Compute Δy and dy for the given values of x and dx = Δx. (Round your answers to three decimal places.) y = 3x − x^2, x = 3, Δx = −0.6 Δy=???

*asked on March 30, 2014* -
## Trigonometry

A painter needs to cover a triangular region 62 meters by 68 meters by 70 meters. A can of paint covers 70 square meters. How many cans will be needed?

*asked on April 24, 2009* -
## Chemistry

I have a few question about an equilibrium lab we performed. Approximately .1 g of CoCl2 * 6H2O was mixed with 2 mL of 12 M HCl. The solution turned blue. Then, water was added and stirred into the solution in 2 mL incriments until no further color change

*asked on May 29, 2007* -
## Accounting - Please check me

Indicate whether a debit or credit decreases the normal balance of each of the following accounts. Office Supplies- debit Repair Service Revenue- debit Interest Payable- debit Accounts Receivable- creditSalaries Expense- debit Owner Capital- credit Prepaid

*asked on April 8, 2008* -
## chem 101

How many kilojoules of heat are needed to completely vaporize 42.8 g of C4H10O at its boiling point? Given Hvap=26.5kj/mol

*asked on April 14, 2014* -
## CALCULUS

Rate of Change You are given the dollar value of a product in 2008 and the rate at which the value of the product is expected to change the nest 5 years. write a linear equation that gives the dollar value V of the product in terms of the yeart.(let t= 0

*asked on September 26, 2009* -
## chemistry

which pair(s) of liquids will be miscible ? H2O AND CH3CH2CH2CH2CH3(PENTANE) C6H6 (BENZENE) AND CCl4(CHLOROFORM) C2H5OH (ETHANOL) AND CH3COOH(ACETIC ACID) how do you know if they are miscible?

*asked on March 16, 2012* -
## AP Chemistry

what is the molecular shape of OCCl2 ion? C is the central atom. Options: 1. seesaw 2. tetrahedral 3. trigonal pyramidal 4. trigonal planar 5. trigonal bypyramidal 6. octahedral

*asked on July 14, 2010* -
## Early childhood

School-age children generally develop writing skills in which sequence? A.Expressive writing,expository writing,story B.Exposity writing,story writing,expressive writing. C.Expressive writing,story writing,expository. Story writing,expository

*asked on March 15, 2011* -
## geometry

2 complementary angles are in the ratio of 5:13. Find the measure of each angle?

*asked on March 28, 2010* -
## calculus

Find f(x+ (delta)x)- f(x) --------------------- (delta)x if f(x)=8x(squared)+ 1 This is so confusing! What is all the delta x stuff?

*asked on September 18, 2008* -
## Spanish please help!

Complete each sentence with the correct form of the verb in parentheses. 1. La clase de matemáticas (terminar) a las cuatro. 2. ¿Te gusta (estudiar) psicología? 3. La profesora (explicar) el mapa. 4. Necesito (comprar) el libro de español. 5. Ustedes

*asked on March 10, 2013* -
## Calculus-Modeling Equations

An unknown radioactive element decays into non-radioactive substances. In 420 days the radioactivity of a sample decreases by 39 percent. 1.What is the half-life of the element? 2.How long will it take for a sample of 100 mg to decay to 46 mg?

*asked on March 6, 2009* -
## Math

Which of the following is a factor of both x2- x-6 and x2 - 5x + 6

*asked on March 13, 2017* -
## Maths

Principal - 6000 Rate - 5% Effective Date - May 15 Maturity Date - November 1 Partial Payment Amount - $1500 Partial Payment Date -August 15 Also Answer the following questions: 1. NUMBER OF DAYS BETWEEN EFFECTIVE DATE AND PARTIAL PAYMENT = 2. INTEREST ON

*asked on March 10, 2008* -
## chem

if ferric chloride was added to an unknown which happened to be benzophenone to identify if it has the phenol functional grp...will the sol'n turn purple (it contains the phenol) or yellow(does not contain phenol)? Benzophenone is a ketone and ketones

*asked on November 18, 2006* -
## chemistry

Write the balanced net ionic equation for the following reaction and determine the conjugate acid-base pairs. HNO3(aq)+Li2CO3(aq)LiNo3(aq)+LiHCO3(aq) Which component in the net ionic equation is the acid, the base, the conjugate base, and the conjugate

*asked on April 29, 2015* -
## Calculus Help

A model for the length of daylight (in hours) in Philadelphia on the tth day of the year is L(t) = 12 + 2.8 sin[(2π/365)(t − 80)]. Use this model to compare how the number of hours of daylight is increasing in Philadelphia on March 21 and April 21.

*asked on March 9, 2014* -
## General Chemistry

A 230.0mL sample of a 0.275 M solution is left on a hot plate overnight; the following morning the solution is 1.50M. What volume of solvent has evaporated from the 0.275 M solution? a)42.2 mL b)63.3 mL c)187.8 mL d)230 mL e)272.2 mL

*asked on June 20, 2012* -
## physics- PLEASE HELP

2. A .12 kg ball is moving at 6 m/s when it is hit by a bat, causing it to reverse direction and have a speed of 14 m/s. What is the change in the magnitude of the momentum of the ball? 4. Lonnie pitches a baseball of mass .2 kg. The ball arrives at home

*asked on December 3, 2008* -
## Chemistry

We performed a lab in class about a month ago concerning different types of equilibrium. One particular portion of the lab adding 5 mL of .3M HCl to 5 mL of .3 M Pb(NO3)2. After a precipitate finally formed, 8 mL of water was added to dissolve PbCl2. One

*asked on May 28, 2007* -
## math

In right triangle ABC,BC=8cm and AC=17cm.Find the value of sin C

*asked on January 13, 2016* -
## Math

Betty has the option of using three types of tables in her coffee shop: square tables with a side length of 42 inches; rectangular tables 26 inches wide and 73 2/3 inches long; and round tables with a diameter of 36 inches. Which of the tables has the

*asked on November 7, 2017* -
## STATISTICS

Private colleges and universities rely on money contributed by individuals and corporations for their operating expenses. Much of this money is put into a fund called an endowment, and the college spends only the interest earned by the fund. A recent

*asked on February 15, 2011* -
## physics

a baseball is batted with a speed of 120 ft/sec at an angle of 37 degrees with the ground. find how long the ball is in the air, how high the ball goes, how far from the plate it is caught, and the components of the velocity of the ball 4 sec after it is

*asked on September 21, 2016* -
## General Chemistry

At STP, a 5.00L flask filled with air has a mass of 543.251g. The air in the flask is replaced with another gas and the mass of the flask is 566.107g. The density of air is 1.29g/L. What is the gas that replaced the air?

*asked on June 20, 2012* -
## Cash Budgeting Question

Cash Budgeting – Helen Bowers, owner of Helen’s Fashion Designs, is planning to request a line of credit from her bank. She has estimated the following sales forecasts for the firm for parts of 2006 and 2007: May 2006 $180,000 June

*asked on December 10, 2006* -
## Math

The elephants at the zoo are fed 1/2 barrel of corn each day. The buffalo are fed 7/10 as much corn as the elephants. How many barrels of corn are the buffalo fed each day?

*asked on February 26, 2013* -
## math

round to the nearest thousand, nearest hundred, nearest ten 8999

*asked on October 7, 2010* -
## Chemistry

Lithium nitride reacts with water to form ammonia and aqueous lithium hydroxide. Li3N(s) + 3H2O(l) ==> NH3(g) + 3LiOH(aq) a)What mass of water is needed to react with 32.9g Li3N? b)When the above reaction takes place, how many molecules of NH3 are

*asked on April 5, 2010* -
## Physics

A constant force is exerted for a short time interval on a cart that is initially at rest on an air track. This force gives the cart a certain final speed. Suppose we repeat the experiment but, instead of starting from rest, the cart is already moving with

*asked on February 6, 2015* -
## math

write a negation of the statement...not all people like football

*asked on September 20, 2011* -
## Ohlone

how many moles of oxygen are consumed in burning 1.6 moles of benzene, C6H6?

*asked on October 7, 2010* -
## Seattle central college

Which of the following is author’s opinion a. Olmsted - was appoint superintendent and worker began cleaning the land for construction. b. After a vote by park commissioner, Vaux and Olmsted become the officer design of Central Park. c. Calvert Vaux, a

*asked on March 21, 2018* -
## history

What are the checks on the power of the judiciary? Are they potent and easily invoked or weak and difficult to invoke?

*asked on November 30, 2008* -
## Chemistry

Write the formulas of the compounds formed by NH4+ with the following anions: CN-, ClO3-, SO42-, H2PO4-

*asked on November 25, 2015* -
## math

What is AB x BC?

*asked on October 15, 2014* -
## Chemistry

The mass of a single barium atom is 2.28E-22 grams. How many barium atoms would there be in 182 milligrams of barium?

*asked on January 23, 2013* -
## PM

You are creating a customer database for Modesto Nuts minor league baseball team. Draw a project network given the information below. Complete the forward and backward pass, compute activity slack, and identify the critical path. How long will this project

*asked on August 1, 2013* -
## Math

Javia ran 8 laps around a track to run a total of 1 mile on Monday. How many laps will she need to run on Tuesday to run 3/8 of a mile?

*asked on February 26, 2013* -
## Organic Chemistry

Why is benzyl chloride reactive in both tests, whereas bromobenzene is unreactive?

*asked on November 2, 2008* -
## Declaration of Independence

What are the key points of the declaration of independence? http://www.ushistory.org/declaration/document/ List a main idea for each paragraph; then let us know what YOU think. Someone here will give you feedback. =) One of the unwritten things, to me, not

*asked on January 23, 2007* -
## statistics

A school club consists of 22 male students and 15 female students. If 3 students are selected to represent the club in the student government, what is the probability 2 will be male and 1 will be female?

*asked on March 19, 2017* -
## Chemistry

Calculate the enthalpy change (delta H) in kJ for the following reaction. 2Al(s) + Fe2O3 (s) ==> 2 Fe(s) + Al2O3(s) use enthalpy changes for the combustion of aluminum and iron. 2Al(s) + 3/2 O2(g) ==> Al2O3(s) Delta H: -1669.8 kJ 2Fe(s) + 3/2 O2(g) ==>

*asked on May 23, 2010* -
## physics

The consumption of natural gas by a company satisfies the empirical equation V=1.50t+0.008t^2, where V is the volume in millions of cubic feet and t the time in months. Express this equation in units of cubic feet and seconds. Put the proper units on the

*asked on August 6, 2005* -
## math

Maria needed 5 gallons of gas to fill her car's gas tank. The mileage odometer read 34,300 miles. When the odometer read 34,528 Maria filled the tank with 12 gallons. At the end of the trip, she filled the tank with 17 gallons, and the odometer read

*asked on October 8, 2015* -
## Math

Suppose you draw a card from an ordinary deck of playing cards What are the odds in favor of drawing a face card? b. What are the odds against drawing a face card?

*asked on October 7, 2015* -
## Algebra

The height in feet of a projectile with an initial velocity of 32 feet per second and an initial height of 240 feet is a function of time in seconds given by h(t) = −16t2 + 32t + 240. (a) Find the maximum height of the projectile. ______ ft (b) Find the

*asked on November 3, 2014* -
## Help Please!!!!

The oral evacuation system is held with the _______ grasp. A. thumb-to-nose B. palm C. thumb-ring D. pinky-to-nose I said B and was wrong. Thank you!

*asked on August 9, 2014* -
## statistic

The random variable x represents the number of boys in a family with three children. Assuming that births of boys and girls are equally likely, find the mean and standard deviation for the random variable x.

*asked on August 20, 2013* -
## ECONOMICS

1. When McDonald’s Corp. reduced the price of its Big Mac by 75 percent if customers also purchased french fries and a soft drink, The Wall Street Journal reported that the company was hoping the novel promotion would revive its U.S. sales growth. It

*asked on July 31, 2011* -
## Statistics

A survey of 100 mayonnaise purchasers showed that 65 were loyal to one brand. For 100 bath soap purchasers, only 53 were loyal to one brand. a) Perform a two-tailed test comparing the proportion of brand-loyal customers at á=.05.b) Form a confidence

*asked on September 19, 2010* -
## English

correct or incorrect? Sally wants a new bicycle,but her mother and father will not buy her one. My little sister is a big baby;she cries all the time. Mr.Smith,my spanish teacher,is going on vacation. Parents want their children to go to college;however

*asked on May 18, 2010* -
## physics

What will a spring scale read for the weight of a 50 kg woman in an elevator that moves as follows? (a) upward with constant speed of 3.0 m/s Enter a number.1 N (b) downward with constant speed of 3.0 m/s Enter a number.2 N (c) upward with acceleration of

*asked on December 18, 2009* -
## Pre Algebra

“A pre-algebra book is 8 1 half Click for more options inches by 9 1 fourth Click for more options inches. Determine the perimeter of the textbook. Describe the steps you took to solve this problem.

*asked on March 30, 2018* -
## FSCJ

please help!! A storage tank 32 m high is filled with pure water. (Assume the tank is open and exposed to the atmosphere at the top.) (a) Find the gauge pressure at the bottom of the tank. (b) Calculate the magnitude of the net force that acts on a square

*asked on February 12, 2017* -
## physics

How much heat is necessary to change 345 g of ice at -11°C to water at 20°C

*asked on September 18, 2016* -
## Math, number and operations base

I have 8 thousands,17 tens, 5 hundreds, and 12 ones. What number am I?

*asked on September 15, 2016* -
## Math

A parking lot contains a total of 52 cars and motorcycles. There are a total of 186 tires (not counting spare tires) in the lot. Assuming each car has 4 tires and each motorcycle has 2 tires, determine how many cars and how many motorcycles are in the

*asked on February 20, 2013* -
## statistics

A lottery offers one $800 prize, one $400 prize, and ten $80 prizes. One thousand tickets are sold at $3 each. Find the expectation if a person buts two tickets. Assume that each ticket can win more than one prize.

*asked on October 26, 2012* -
## management

1. Regarding management and leadership, which statement is most accurate? A. Leaders can be good managers, and good managers can be leaders. B. Leaders aren’t managers, and managers aren’t leaders. C. Leadership and management are entirely unrelated.

*asked on August 22, 2012* -
## calculus, please help

A fish is reeled in at a rate of 3.2 feet per second from a point 10 feet above the water (see figure). At what rate is the angle between the line and the water changing when there is a total of 25 feet of line out? (Round your answer to three decimal

*asked on October 14, 2010* -
## Trig

Morana is trolling for salmon in Lak Ontario. She sets the fishing rod so its tip is 1 m above the water and the line enters the water at an angle of 45 degrees. Fish have been tracked at a depth of 45km. What length of line must she let out?

*asked on April 18, 2017* -
## Algebra

Find all points on the x-axis that are 10 units from the point (7, 6). (Hint: First write the distance formula with (7, 6) as one of the points and (x, 0) as the other point.)

*asked on October 6, 2014* -
## Calculus

A ladder 15 feet long leans against a vertical wall. Supppose that when the bottom of the ladder is x feet from the wall, the bottom is being pushed towards the wall at the rate of 1/2x feet per second. How fast is the top of the ladder rising at the

*asked on November 11, 2013* -
## Math

An Italian food restaurant claims that with the choices of toppings that they offer on their pizzas, you can order about 65,550 different types of pizza. How many toppings do they offer?

*asked on February 20, 2013* -
## chemistry

The charge and identity of an ion with 16 protons, 18 electrons and 17 neutrons would be?

*asked on February 6, 2013* -
## Chemistry

C15H30 is a hydrocarbon that reacts with oxygen gas to give carbon dioxide and water. Calculate the mass of water (grams) formed when 724.05 grams of the hydrocarbon reacts with the oxygen gas.

*asked on November 14, 2011* -
## statistics

An auditor of Health Maintenance Services reports 40 percent of policyholders 55 years and older submit a claim during the year. Fifteen policyholders are selected at random for company records. a)how many of the policyholders would you expect to have

*asked on March 26, 2011* -
## geometry

If AB is opposite AC and AC is opposite AD , what can you conclude? Explain.

*asked on February 14, 2011* -
## Chem

I stuck on this problem. Can you help me to solve it? A reaction mixture in a 3.67L flask at a certain temp. initially contains 0.763g H2 and 96.9g I2. At equilibrium, the flask contains 90.4g HI. Calculate the equilibrium constant(Kc) for the reaction at

*asked on October 17, 2010* -
## math

Round to the nearest thousand, nearest hundred, and the nearest ten 7509

*asked on October 7, 2010* -
## Physics

How much energy is needed to melt 0.225 kg of lead so that it can be used to make a lead sinker for fishing? The sample has an initial temperature of 27.3 degrees celsius and is poured in the mold immediately after it has melted. Not sure if this is

*asked on March 30, 2010* -
## Algebra

Find the equation for the line L. Note the x-coordinate of the point Q is 3, y-coordinate of the point P is 17, and the parabola has equation y=x^2+4.

*asked on February 1, 2020* -
## Multicultural Studies

Is there a website like sparknotes that gives summaries of non-fiction books. Autobiography of Recovering Skinhead ?

*asked on December 5, 2018* -
## Math

Village Q is 7km from village P on a bearing of 060. VIllage R is 5 Km from village P on a bearing of 315. Using scale drawing with a scale of 1 cm : 1 km. find: a. the direct distance from village Q to village R b. the bearing of village Q from village R.

*asked on September 27, 2018* -
## Algebra

Steve is making bags of mixed nuts. Almonds are $5 per pound & Cashews are $12 per pound. Steve charges $56 per 7 pound bag. 1. Write a system of equations that can be used to determine how many pounds of almonds & how many pounds of cashews Steve uses. 2.

*asked on July 18, 2018* -
## physics

Two charges +q and −q are separated by a distance d. Find an expression for the potential difference VBA = VB − VA, where points A and B are both a distance b from the charges. ￼

*asked on March 21, 2016* -
## DENTAL ASSISTANT HELP PLEASE!!!!!!

1)Each state has a dental board of examiners responsible for enforcing that particular state's Dental Practices Act (DPA). The DPA contains similar requirements for dentist conduct. Which of the following is not covered by the DPA? A. Americans with

*asked on August 7, 2014* -
## Math

A customer needs 88 ,2 inch pipe connectors to Complete a project. How many Bags of connectors would you recommend the customer purchase if each bag includes 25 connectors

*asked on October 1, 2013* -
## PM

J. Wold. project manager of the Print Software, Inc., wants you to prepare a project network; compute the early, late, and slack activity times; determine the planned project duration; and identify the critical path. His assistant has collected the

*asked on August 7, 2013* -
## medical coding

While running, a 10-year-old boy began choking on a small latex ballon and was rushed from the amusement park to the emergency deparmtent. The balloon is lodged in the trachea just past the larynx and threatening to obstruct her breathing. The piece of

*asked on July 7, 2013* -
## math

Write 0.026 As a sum using powers of 10 to show place value

*asked on February 11, 2013* -
## Chem

Calculate the number of C atoms in 0.185 C6H14O.

*asked on September 28, 2012* -
## Updated Math Question

The radius of circle A is 9 times greater than the radius of circle B. Which of the following statements is true? A.The area of circle B is 9 times greater than the area of circle A. B.The area of circle A is 9 times greater than the area of circle B C.The

*asked on July 18, 2012* -
## us history

what are the similarties and differences of philosophies in the Articals of confederation and the constitution

*asked on December 28, 2010* -
## Chemistry

When 84.8 g of iron(III) oxide reacts with an excess of carbon monoxide, iron is produced. Fe2O3(s) + 3CO(g) ==> 2Fe(s) + 3CO2(g) what is the theoretical yield of iron?

*asked on March 28, 2010* -
## Math

Write the first five terms of the sequence whose nth term is -7n-4.

*asked on December 12, 2008* -
## PHYSICS

1. A 4.0 N force acts for 3 seconds on an object. The force suddenly increases to 15 N and acts for one more second. What impulse was imparted by these forces to the object? 2. A railroad freight car, mass 15,000 kg, is allowed to coast along a level track

*asked on December 4, 2008* -
## ecoc

TC=50+16 Q -2 Q2+0.2 Q3 a.plot this curve for quantites 1 to 10 b.calculate the average total cost,average variable cost, and marginal cost for these quantities, and plot them on another graph c. discuss your results in term of decreasing,constant, and

*asked on August 9, 2007* -
## physics question

I have a question about a problem regarding Newton's third law. a. An iron rod is held up by a magnet. The magnet is held up by a string (from a ceiling, let's say). Draw a free-body diagram for the magnet and a separate free-body diagram for the iron rod.

*asked on November 21, 2006* -
## calculus

Suppose the revenue (in thousands of dollars) for the sales of 'x' hundred units of an electronic item is given by the function R(x)= 40x^2e^ -0.4x +30. where the maximum capacity of the plant is 800 units. Determine the number of units to produce in order

*asked on April 29, 2018* -
## math

License plates consist of letters and/ or digits. Calculate the number of licence plates that could be formed in each province or territory. Assume all numbers and letters are possible. a) Ontario, with 4 letters followed by 3 digits b)Québec, with 3

*asked on July 9, 2017* -
## math

Which of the following statements is true about the level of significance alpha?

*asked on November 15, 2016* -
## math

what is the dimension of 100 ft diagonal?

*asked on January 12, 2016* -
## physics

Calculate the Specific Gravity of an object that sinks in water if m = 21.97 g and mA = 17.40 g.

*asked on November 23, 2015* -
## physics

If the force of the explosion was focused onto a smaller ___________ of the window, then the pressure of the explosion on the window would be even greater.

*asked on June 11, 2015*