Saturday

December 20, 2014

December 20, 2014

Total # Posts: 836

**Math**

The police can determine the speed a car was traveling from the length of the skid marks it leaves. The function they use is S = f(L) = 2sqrt(5L) where S is speed (mph) and L is the length of the skid marks (feet) (a) If skid marks of length 125 feed are measured, what was the...
*November 21, 2014*

**Foundations of Measurement**

Approximately 400,000 students took the GRE in 2009. Observed mean for the Verbal score was 540 with a standard deviation of 80, and the observed mean quantitative score was 500 with a standard deviation of 100. Assuming distribution was normal, answer the following: How many ...
*November 9, 2014*

**Help please Math**

is a(bc)= ( ab) (ac)
*November 5, 2014*

**Math 130**

Which has the greater effect on the surface area of a right circular cylinder - doubling the radius or doubling the height? How would I explain this
*October 28, 2014*

**Math 116**

If the length of a rectangle is increased by 10% and the width of the rectangle is decreased by 10%, is the area changed? If so, does it increase or decrease and by what percent? Explain your answer.
*October 14, 2014*

**Teaching 4Grade Math**

You play your Xbox 360 every day for a month. Each week you realize that every time you play, your battery lift goes down by 5% each week. Say you don’t play for two weeks, how much %___ are you saving a week by not playing.
*September 6, 2014*

**MATH1112**

A student argues that a p% increase in salary followed by a q% decrease is equivalent to a q% decrease followed by a p% increase because of the commutative property of multiplication. How do you respond?
*September 3, 2014*

**Math 130**

A Students says that 3 1/4 % = 0.03 + 0.25 = 0.28. Is this correct? Why or why not? So I got .0235 and I don't think this is correct
*September 3, 2014*

**Math**

A is 3 1/4 % = 0.03 + 0.25 = 0.28. Is this correct? Why or why not? So I got .0235 and I don't think this is correct
*September 3, 2014*

**Math 112**

thanks Reiny
*September 2, 2014*

**Math 112**

There are 100 employees in a room. 99% are managers. How many managers must leave the room to bring down the percentage of managers to 98%?
*September 2, 2014*

**MA112 HELP PLEASE**

Because of a recession, the value of a new house depreciated 10% each year for three years in a row. Then, for the next three years, the value of the house increased 10% each year. Did the value of the house increase, decrease, or remain the same after 6 years? How can I ...
*September 2, 2014*

**Geography**

To what extent are different landforms associated with different plate boundaries?
*September 2, 2014*

**MA 112**

Can a/b and (a+b)/b ever form a proportion? Why or why not?
*September 1, 2014*

**Writing**

This is great 6 how are you concluding this?
*September 1, 2014*

**MA112**

So for this next equation (a-b )d = b(c- d ) d=[ ] can I divide both sides is this equation by a-b would it safe t0 say d=db or d= bc-bd a-b
*September 1, 2014*

**MA112**

So for this next equation (a-b )d = b(c- d ) d=[ ] can I divide both sides is this equation by a-b would it safe t0 say d=db
*September 1, 2014*

**MA112**

Yes Steve it's correct
*September 1, 2014*

**MA112**

How do I factor both sides of this equation ad-bd=bc-bd I tried a/b =c/d that was wrong
*September 1, 2014*

**Please help **

What is 5x+6x+7x=31,050 solve for X X is 1725 I'm lost where and how did they get 1725 for X
*August 31, 2014*

**MA120 help please**

Can a/b and (a+b)/b ever form a proportion? Why or why not?
*August 27, 2014*

**MA**

Can a/b and (a+b)/b ever form a proportion? Why or why not?
*August 25, 2014*

**english**

Argue for or against which source (Traditional Library Sources versus Web-based Research Sources) would be better to prepare for a debate on changing the state’s laws on smoking in public buildings. Identify the advantages, types of sources, etc., and provide answers for ...
*July 21, 2014*

**American Government**

In a situation like this, why might state employment levels go up, even when federal activity might be going down? Provide at least one reason with support.
*July 13, 2014*

**American Government**

What do you think would happen to state employment if the federal government decided that, rather than passing laws an making states carry them out, it simply give the state responsibility for a major social program such as welfare? Provide at least two examples of what might ...
*July 13, 2014*

**Chemistry**

In a silphuric acid (H2SO4)-Sodium Hydroxide (NaOH) acid-base titration, 17.3mL of 0.126M NaOH is needed to neutralize 25mL of H2SO4 of unknown concentration. What is the morality of the H2SO4 solution? H2SO4 (aq)+ NaOH (aq) = Na2SO4 (aq) + H2O (l)
*July 1, 2014*

**Chemistry**

18.16mL of drug-a?
*July 1, 2014*

**Chemistry**

She needs to prepare a stock solution of Drug-A. The concentration of the stock solution she needs is 100mM and she needs to make 1.2mL solution of the drug A. The drug is in salt form weighing 181.6G/mol. What is the amount of G of drug-a will she have to make the stock ...
*July 1, 2014*

**Early Childhood Education**

C. conventional; information
*June 16, 2014*

**Early Childhood Education**

The __________ and __________ approaches use webbing. A. information; emergent creative B. emergent creative; conventional C. conventional; information D. learning; information
*June 16, 2014*

**Probability**

For hair color, Brown (B) is a dominant trait and Blond (b) is a recessive trait. If one parent has pure blond hair and one parent has hybrid brown hair, complete the Punnett square and questions that follow. a) What is the probability that their first child will have pure ...
*April 30, 2014*

**finance**

How much must be deposited into an account to generate a $2,400 payment every three months for the next four years if the account earns 10% compounded quarterly
*April 22, 2014*

**Math**

The new highway will be a total of 54 mils long. Will the highway be finished in 8 months?
*February 27, 2014*

**Math**

OK a pattern has 1 small square 1 3/4 on all sides middle has 5 1/4 on all sides large has 8 3/4 on all sides. I did'ent know how to do this now she wants to make the pattern 2 1/2 times bigger and show what will be the new lengths of the sides of the squares. Can somebody...
*January 29, 2014*

**Easy Statistics**

The probability Joe is at work is 49%,. The probability Joe is at home is 25%. What is the probability Joe is neither at work nor at home? a) 39% b)74% c)52% d) 26% *I personally think it is a or c. I am just needing some help thanks!
*December 6, 2013*

**math**

Determne the number of days of the loan. Loan Date is Oct 20. Due Date is Dec 18. Whats the number of Days?
*December 6, 2013*

**Business Math**

Principal is $1700, Rate is 12%, Days 33. What is the exact interest?
*December 6, 2013*

**Business math**

Buy 2 pair of jeans at $8.99 each and get 3 free. Calculate the markdown percent
*November 30, 2013*

**math**

What is the net price factor discount of 25/15/10?
*November 18, 2013*

**Geography**

thanks!
*October 1, 2013*

**Geography**

OOOHH ok that's what I thought! But I was not sure because lots of textbooks use different terminology and it got confusing. So ridges are the result of rifting process?
*October 1, 2013*

**Geography**

Hello, I am doing a presentation on the role and importance of rifts and ridges in the creation of continents. I am having a really hard time telling the difference between the two! I have researched them both and find them very similar...help! Thanks
*October 1, 2013*

**Chemistry**

What is the density of 3.40 Liters of Hydrochloric acid (HCl) that has a mass of 24.5 grams?
*September 10, 2013*

**algebra**

a jar contains $8.75 in nickels, dimes and quarters. There are two times as many dimes as there are nickels, and 10 more dimes than quarters, how many of each coin are in the jar?
*September 9, 2013*

**algebra**

What is the net price factor for trade discounts of 25/15/10? (Points : 2.5)
*August 17, 2013*

**Contemporary math**

Compound amount after 5 years for an investment of $7,700 at 6% interest compounded quarterly? What is the amount of compound interest for the invesment
*July 1, 2013*

**Human Resources**

Creating a Budget Various budget approaches play an important role in resource allocation in human service organizations. You are the executive director for a local government workforce agency that focuses on providing career- and work-related skills. The Department of ...
*June 30, 2013*

**business math**

40 employees each gross $325 p/w. What are the total combined social security & medicare taxes that should be withheld from employees paychecks each week?
*June 8, 2013*

**health**

need help with power point for hcr/210 final project records management presentation
*May 17, 2013*

**math**

Judy has 126 pencil boxes stacked in piles of equal size. what are all the possible pile sizes? Explain how you found your answer.
*April 17, 2013*

**statistics**

7=2-5m;m=
*April 10, 2013*

**Math 112 Help hard one**

Can you use the numbers 1 - 9, along with any math symbols and operations, to arrive at the answer of 100 when the 6 and 9 have a negative sign in front of them? There are many answers. See if you can find more than one.
*March 30, 2013*

**Math**

Mark bought four times as many apples as Harry and three times as many apples as Martin. If Mark, Harry, and Martin purchased less than a total of 190 apples, what's the greatest number of apples that mark could have purchased?
*March 10, 2013*

**Math**

Damon are you a professor. YOur answer was well explain and detail out. Thankyou
*March 9, 2013*

**Math**

Sum the first two odd numbers, then the first three, the first four, and so on. From these observations could you guess the sum of the first 100 odd numbers? So the first two odd numbers are
*March 9, 2013*

**physics**

A 240-kg boat is at rest in calm conditions. A sudden wind pushes the boat 200 meters in 30 seconds. What was the net force on the boat if the acceleration was constant?
*February 20, 2013*

**Statistics**

A candidate for a political office claims that he will win the election. A poll is conducted, and 35 of 150 voters indicate that they will vote for the candidate, 100 voters indicate that they will vote for his opponent, and 15 voters are undecided. a. What is the population ...
*February 19, 2013*

**Statistics**

A candidate for a political office claims that he will win the election. A poll is conducted, and 35 of 150 voters indicate that they will vote for the candidate, 100 voters indicate that they will vote for his opponent, and 15 voters are undecided. a. What is the population ...
*February 19, 2013*

**Physical Science Please Help!**

Am I supposed to divide 29.22 by 58.44?
*February 5, 2013*

**Physical Science Please Help!**

Table salt, sodium chloride, has the formula NaCl. A weight of 58.44 grams of table salt contains 1.0 mole of NaCl molecules. How many moles of NaCl are contained in 29.22 grams of NaCl?
*February 5, 2013*

**Math**

susan spends 2 1/4 hours taking inventory and 1 1/2 hours restocking how many hours does susan work
*January 28, 2013*

**Physics**

a bike passes a lamp post at the crest of hill at 4.5 m/s. she accelerates down the hill at the rate of 0.04 m/s squared for 12 seconds. how far does she move down the hill during this time ?
*December 13, 2012*

**chem**

The process in which an ion or molecule is surrounded by solvent molecules arranged in a specific manner is called?
*December 12, 2012*

**Chem**

If the pH of a solution at 25.00 degrees celsius is 2.37, the pOH of the solution at that temp is:
*December 12, 2012*

**English**

Need help correcting this sentence there is at least 6 errors. out no loitering screamed grubble the greedy shopkeeper.
*December 3, 2012*

**Language**

I need to correct the following sentence and I havving trouble with it! This is how it is written and there is to be 6 corrections at least in it. out no loitering screamed grubble the greedy shopkeeper This is how I think it should be am I right??? "Out!" "No ...
*December 3, 2012*

**statistics**

say that you have a distribution of exam scores with a mean of 57 and a standard deviation of 7. if a student in the class has a standard score equal to 2.429, what would their raw score on the exam be?
*December 2, 2012*

**algebra**

A movie theater charges $6 for an adult and $3 for a child. if the total amount was 1428 and there were 56 more children than adults - then how many children attended?
*November 13, 2012*

**Math for Liberal Arts**

Directions: Define the necessary symbols, rewrite the argument in symbolic form, and us a truth table to determine whether the argument is valid. If the argument is invalid, interpret the specific circumstances that cause the argument to be invalid. Problem: 1. All pesticides ...
*November 8, 2012*

**Math for Liberal Arts**

Directions: Define the necessary symbols, rewrite the argument in symbolic form, and us a truth table to determine whether the argument is valid. If the argument is invalid, interpret the specific circumstances that cause the argument to be invalid. Problem: 1. If you argue ...
*November 8, 2012*

**statistics**

Consider a population with µ=93.3 and σ=5.27. (A) Calculate the z-score for x=94.9 from a sample of size 12. (B) Could this z-score be used in calculating probabilities using Table 3 in Appendix B of the text? Why or why not?
*October 17, 2012*

**English (MLA)**

In my essay I want to quote a character saying something. And I just want to confirm that this is how I would do this: "'I married him-and he is a good man'" (Ross 180). I just want to know if the three quotations are supposed to be there? I cant find in on ...
*October 16, 2012*

**stats**

A set of data is normally distributed with a mean of 200 and standard deviation of 50. • What would be the standard score for a score of 250? • What percentage of scores is between 200 and 250? • What would be the percentile rank for a score of 250?
*October 9, 2012*

**Liberal Arts Math **

Find the indicated value: a. 4C2 b. List all of the permutations of {a,b,c,d} when the elements are taken two at a time.
*September 29, 2012*

**Liberal Arts Math **

How do I find the indicated values of these? a. xP1 b. xC2
*September 29, 2012*

**statistics**

For a particular sample of 63 scores on a psychology exam, the following results were obtained. First quartile = 57 Third quartile = 72 Standard deviation = 9 Range = 52 Mean = 72 Median = 68 Mode = 70 Midrange = 57 Answer each of the following: I. What score was earned by ...
*September 29, 2012*

**Concordia**

All costs shown are on a per unit of product sold basis. Sales = $18/unit Direct Materials = $2/unit Direct Labor = $2/unit Variable Manufacturing Overhead = $2/unit Variable selling and administrative expenses = $2/unit Fixed Manufacturing Overhead = $2/unit at current volume...
*September 26, 2012*

**math**

If the start time is 8:36 elapsed time is 3 hr 27 min What is the end time
*September 26, 2012*

**Math**

The number N of state and federal inmates in millions during year x, where x>2002 can be approximated by the following formula. N = 0.05x - 98.45 Determine the year in which there were 1.9 million inmates.
*September 26, 2012*

**college algebra**

Deshaun is going to rent a truck for one day. There are two companies he can choose from, and they have the following prices. Company A has no initial fee but charges .70 cents for every mile driven. Company B charges an initial fee of $50 and an additional .20 cents for every...
*September 22, 2012*

**math**

what is the value /-16+10/2 squared + 16/2?
*September 5, 2012*

**Algebra 1**

no ma'am the problem was 16 - 1 - 2 - 5. then turned it into a fractional form, 15 4/4 - 1 2/2 - 1 2/2 - 4 3/3. which the answer would be 8? correct, or did I mess up?
*September 5, 2012*

**Algebra 1**

no, it's 16 - 1 - 2 - 5.
*September 5, 2012*

**Algebra 1**

15 4/4 - 1 2/2 - 1 2/2 - 4 3/3?
*September 5, 2012*

**math**

4 deciliters = 0.4 liters. 4 liters = 40 so what day did he drink more?
*September 5, 2012*

**Algebra 1**

Carlos is having a bake sale, he begins with one tray of brownies. [cut into 15 pieces] and 18 cookies. He sells 1/3 of the brownies, and 1/6 of the cookies. He is then given a box of 12 tasty cakes to sell. He sells 3/4 of the box, how much of each food will he have left? ...
*September 5, 2012*

**High School Algebra 1**

which i know subtracted is 9, but in this case how do I turn this prblem ino a fractional form?
*September 5, 2012*

**High School Algebra 1**

how do you turn 16 - 1 - 2 - 5 into a fractional form? and write the answer as a reduced fraction;
*September 5, 2012*

**Math**

What does "standard form" mean in 3rd grade math?
*September 4, 2012*

**math**

The breaking strength (in pounds) of a certain new synthetic is normally distributed, with a mean of 172 and a variance of 4. The material is considered defective if the breaking strength is less than 168 pounds. What is the probability that a single, randomly selected piece ...
*August 27, 2012*

**Persoanl finance**

1. Jenny Franklin estimates that as a result of completing her master’s degree, she will earn $ 7,000 a year more for the next 40 years. a. What would be the total amount of additional earnings? 40 yrs * 7,000/ yr = $280,000 I don't understand how to get this part? b...
*July 28, 2012*

**math**

Sam can do a job in X hours. Denise can do the same job in x+2 hours. How long will it take Sam and Denise to do the job together? (Express your answer in terms of x.)
*July 11, 2012*

**Physics**

A stone is shot vertically upwards using a catapult and is caught 6 seconds later at the same height from which it was shot. At what time is the stone at its highest point.
*April 26, 2012*

**Math/ Algebra**

Give an example of a function using a set of at least 4 ordered pairs. The domain will be any four integers between 0 and +10. The range will be any four integers between -12 and 5. Explain why your example models a function. Give an example of at least four ordered pairs that...
*March 7, 2012*

**Math**

I am having a hard time understanding the difference between discrete and continuous data...i have read the textbook definition and i have looked online, and i just cannot comprehend it :( help?
*February 29, 2012*

**math**

c^8d^-12 ________ c^-4d^-8
*February 9, 2012*

**algebra**

I AM TRYING TO SOLVE A SYSTEM OF EQUATIONS BY GRAPHING AND CAN GET THIS ONE. 3x + y = 2 4y = 12 - 12x HOW DO YOU DO THIS?
*January 29, 2012*

**Geometry**

Triangles ABC and DEF are congruent. The length of the line segment AB is 5 yards, the length of the line segment BC is 7 yards, and the length of the line segment CA is 9 yards.
*January 23, 2012*

**Statistics**

Given that a sample is approximately bell-shaped with a mean of 60 and a standard deviation of 3, the approximate percentage of data values that is expected to fall between 54 and 66 is
*January 22, 2012*

**grammar**

It is out of context. I actually makes sense in the story :P but does the "tan lined ring finger" make sense? I feel like they should have a "-" between them.... like "tan-lined" or "ring-finger"
*January 17, 2012*

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