Friday

August 1, 2014

August 1, 2014

Number of results: 55,131

**algebra**

The difference between the ages of two friends is 2 years. The sum of their ages is 74 years. Find the age of the older friend.
*December 14, 2009 by kara*

**Math**

The difference between the ages of two friends is 2 years. The sum of their ages is 74 years. Find the age of the older friend.
*January 11, 2010 by Tony*

**math**

The difference between the ages of two friends is 2 years. The sum of their ages is 74 years. Find the age of the older friend.
*March 28, 2010 by Anonymous*

**Math**

The difference between the ages of two friends is 2 years. The sum of their ages is 74 years. Find the age of the older friend. (Points : 1) 38 36 39 37
*June 7, 2011 by CC*

**Psychology**

Optimum physical health usually occurs: a. between the ages of 15 and 21. b. between the ages of 18 and 25. c. between the ages of 25 and 40. d. between the ages of 40 and 55. I think it is either c or d.
*November 7, 2011 by Kasey*

**psychology**

optimum physical health usually occurs a) between the ages of 15 and 21 b) between the ages 18 and 25 c) between the ages of 25 and 40 d)between the ages of 40 and 55 i want to say it it is a
*March 7, 2011 by Anonymous*

**physics**

In a double-slit experiment, two beams of coherent light traveling different paths arrive on a screen some distance away. What is the path difference between the two waves corresponding to the third bright band out from the central bright band? The path difference between the ...
*March 22, 2014 by Anonymous*

**mat**

Write an equation about the difference in ages between these two children. Ann is 13. Lisa is 9 ?
*January 24, 2011 by Anonymous*

**math**

In her art class, Ms. Walter has 12 students whose ages are listed below: 19, 20, 20, 20, 21, 22, 24, 24, 25, 25, 56, 60 She calculated the mean and the median of their ages. What is the relationship between these two values?
*November 10, 2011 by Sally*

**mathematics**

the difference between two positive numvers is 2 and the difference between their squares is 40. taking x to be the smaller of the two numbers, form an equation in x and solve it. thank you in advance!
*August 6, 2008 by jessica*

**algebra 1**

Marcia is 3 times as old as Kate. The difference between their ages is 12 years. Find the age of each.
*December 4, 2011 by kit kat*

**early childhood education**

your budget allows you to purchase only one math software package for your children ages 5-8.Which one of the following packages would probably be best for this age group? (a) ages 4-7 (b) ages 6-9 (c) ages 7-9 (d) ages 6 and up
*June 20, 2011 by alana*

**business**

Your budjet allows you to purchase only one math software package for your children ages 5-8. Which one of the following packages would probably be best for this age group? A. Ages 4-7 B. Ages 6-9 C. Ages 7-9 D. Ages 6 and up. Can someone check this answer for me. D.
*January 13, 2009 by Cynthia*

**statistics**

The alternative hypothesis for an independent-measures t test states ______. a. There is no mean difference between the two populations being compared. b. There is no mean difference between the two samples being compared. c. There is a non-zero mean difference between the two...
*November 11, 2012 by Robbie*

**Chid Care**

Your budget allows you to purchase only one math software package for your children ages 5-8. Which one of the following packages would be probably be best for this age group? A. Ages 4-7 B.Ages 6-9 C.Ages 7-9 D. Ages 6 and up I pick the ltter B can anyone tell me if I am right.
*February 3, 2009 by Brenna*

**software**

your budget allows you to purchase only one math software package for your children ages 5-8. which one of the following packages would probably be best for this age group? A Ages 4-7 C Ages 7-9 B Ages 6-9 D Ages 6 and up
*October 16, 2009 by Rosa*

**Statistics**

write a paper that involves designing, conducting, and analyzing results from your own experiment to test the sensory discrimination of one of your friends. Choose a friend who claims to be able to tell the difference between two very similar objects.
*July 25, 2012 by Kalin*

**Algebra**

1. The sum of the ages of James and Remy 5 years ago was 44. Twenty-two years from now, James' age will be 52 less than twice3 Remy's age then. Find their present ages. 2. Two numbers have a sum of 41. Their difference is 5. What are the numbers? 3. The perimeter of a football...
*January 4, 2014 by McKenna Louise*

**Chid Care**

Your bugjet allows you to purchase only one math software packages for your children ages 5-8. Which one of the following packages would probaly be best for this age group? A.ages 4-7 B.ages 6-9 C. ages 7-9 D. ages 6 and up. I chose the letter B and that answer was wrong.
*February 5, 2009 by Cynthia*

**maths**

a teen age boy wrote his own age after his father's from this new four place he subtracted the absolute value of the difference of their ages bto get 4289 the sum of their ages was
*October 5, 2010 by sushma*

**Math**

Jack is married to Jill. Their son, Junior, asked each of them to reveal their ages. Junior’s parents decided to tell him, but in the form of a puzzle. Jack told Junior, “If you reverse the digits in my age, you get your mother’s age. Jill told her son, “The sum of my age and ...
*May 29, 2012 by Erica*

**US History**

What is the difference between Nixon's policies of engagement and foreign policy strategies. I already have almost the entire question answered, I am just confused on what the difference between these two are.
*July 31, 2008 by Sarah*

**ijhs**

The difference between a two-digit number and the number obtained by interchanging the positions of its digits is 36. What is the difference between the largest and the smallest of these two digits?
*February 14, 2014 by div*

**AED**

give an example of what a child would go through physically with each stage. explain what each age group will physically go through From being a newborn (ages 0–1 month); infant (ages 1 month – 1 year); toddler (ages 1–3 years); preschooler (ages 4–6 years); school-aged child...
*June 11, 2008 by dawn*

**Statistics**

Age at onset of dementia was determined for a sample pf adults between the ages of 60 and 75. For 15 subjects, the results were SumX=1008, and Sum(X-M)^2=140.4. Use this information to answer the following: a. What is the mean and SD for this data? b. Based on the data you ...
*February 10, 2014 by daniel*

**Statistics**

Age at onset of dementia was determined for a sample of adults between the ages of 60 and 75. For 15 subjects, the results were SumX=1008, and Sum(X-M)^2=140.4. Use this information to answer the following: a. What is the mean and SD for this data? b. Based on the data you ...
*February 10, 2014 by daniel*

**Algebra**

How can you determine if a polynomial is the difference of two squares? I think that if the polynomial is x^2-64 that this is a polynomial that is a difference of two squares because if you factor it out you would get (x+8)(x-8). If the 64 in my example were positive would ...
*August 30, 2008 by Laura*

**math**

the sum of the ages is 48, Bailey's mom is 15 more than twice his age. what is the ages of the two?
*May 5, 2011 by heath*

**Statistics**

A 95% confidence level for the difference between u1 and u2 runs from -2 to +6. From this we can infer that a. u1 is probably greater than u2. b. u1 is probably less than u2. c. there may be no difference at all between u1 and u2. d. the difference between u1 and u2 is not ...
*April 30, 2014 by Kevin*

**Statistics**

A 95% confidence level for the difference between u1 and u2 runs from -2 to +6. From this we can infer that a. u1 is probably greater than u2. b. u1 is probably less than u2. c. there may be no difference at all between u1 and u2. d. the difference between u1 and u2 is not ...
*May 1, 2014 by Kevin*

**Statistics**

You are wondering whether male or female students pay more for books and materials at the U of C. You find 5 male friends at the U of C and find that they spent an average of $680 with a standard deviation of $5. You find 4 female friends at the U of C and find that they spent...
*December 2, 2012 by Susan*

**statistic**

Listed below are the ages of actresses and actors at the times that they won Oscars for the categories of Best Actress and Best Actor. The ages are listed in chronological order by row, so that corresponding locations in the two tables are from the same year. (Notes: In 1968 ...
*April 15, 2014 by Bell*

**Hum205**

Assume you are a Humanities instructor tasked with explaining the social role of the arts in the Middle Ages. What are three relationships between the arts and Early Middle Ages culture you would want your students to know? What are three relationships between the arts and ...
*April 21, 2010 by patricia*

**HUM 205**

What are three relationships between the arts of Middle Ages and Early Middle Ages culture? What are three relationships between the arts and Late Middle Ages culture?
*September 1, 2009 by Latoya*

**algebra**

brian is 26 years older than his daughter kim. the sum of their ages is twice the differences of their ages. find their ages.
*February 4, 2012 by erika*

**Algebra 2**

"My husband's age," remarked a lady the other day, "is represented by the figures of my own age reversed. He is my senior, and the difference between our ages is one-eleventh of their sum." 10x + y = husband's age 10y + x = wife's age (10x+y) - (10y+x) = ((10x+y) + (10y+x)) ...
*October 25, 2011 by Anonymous*

**ethics and values**

1.What is egoism? What is psychological egoism? What is the difference between the two? 2.What is the difference between utilitarianism and egoism? Need some ideas
*July 15, 2011 by Steph*

**Chemistry**

What's the difference between relative and percentage abundance? What's the difference between realtive and average atomic mass? Is there a difference?
*August 19, 2013 by Taylor*

**Algebra**

Brian is 26 years oldr than his daughter Kim. The sum of their ages is twice the differences of their ages. Find theri ages.
*March 29, 2012 by Anonymous*

**geography**

1)give two properties of gold which makes it an economically valuable mineral 2)what is the difference between gold and an ordinary rock? 3)what is difference between gold mine and gold prospect?
*July 28, 2010 by kila*

**bus stats**

Given the following information about a hypothesis test of the difference between two means based on independent random samples, what is the standard deviation of the difference between the two means? Assume that the samples are obtained from normally distributed populations ...
*June 23, 2011 by jenny*

**maths**

Two A.P. 's have the same common difference. The first term if ine if these is 3, and that of the other is 8. What is the difference between their
*January 6, 2013 by Anonymous*

**Statistics**

The notion of statistical significance is frequently used in business to distinguish between true and spurious between-group differences (such as a difference between the response rates to two different promotions). Hence, when the difference between the baseline (no ...
*August 20, 2011 by George*

**Science**

Geologists use radioactive dating to... - determine the relative age of rock layers. - tell the difference between molds and casts. - tell where one soil horizon begins and the next one ends. - determine the absolute ages of rocks. I think it is to determine the absolute ages ...
*January 14, 2014 by Rainshine*

**Algebra**

Find two factors of 15 with a difference of 2. I have 1 and 5. Is that correct? if not can you please show me how to do it.Thanks! no the difference between 1 and 5 is four try 5 and 3
*August 7, 2007 by Glenda*

**vivekanand H s SCHOOL**

the difference of ages between 2 sisters is 10 years, 15 years ago elder 1 was twice as old as younger age. find the both present age?
*July 19, 2013 by shankar*

**English - Native speakers**

Hello once again! Can you tell me the difference between Don't underestimate me! and Don't underrate me! Which one is more used in English and what's the difference between those two words? Is there any other similar word? My second question. Can we say both I'm Croatian and I...
*March 8, 2011 by Mark*

**Statistics**

Professor Casey performs a t test of Ho: u1 - u2=0 using a-.01 and finds a significant difference between Xmean1 and Xmean2. From this we can infer. a. a large difference between u1 and u2. b. an important difference betwee u1 and u2. c. u1 and u2 to be unequal. d. all of the ...
*April 29, 2014 by Kevin*

**Statistics**

State the null hypothesis, Ho, and the alternative hypothesis, Ha, that would be used to test these claims. < ¡Ü = ¡Ù ¡Ý > (a) There is an increase in the mean difference between posttest and pretest scores. Ho: ¦Ìd 0 Ha: ¦Ìd 0 (b) Following a special training session, ...
*October 29, 2013 by Karly*

**statistic**

Let's assume there are 3 people in Room A and another 3 people in Room B. The ages of the people in Room A are 25, 25, and 25. The ages of the people in Room B are: 10, 25, and 40. The mean of the ages in both rooms is 25. Does that mean that both room have populations that ...
*May 12, 2010 by carol*

**Reiny (this was the one you helped me with)**

I tried to explain it by using the arrangement of billiard balls, but I guess you don't play pool. let me try to "draw" the billiard balls . . .o . . o o . .o o o . o o o o o o o o o o sum of one row = 1 sum of two rows = 3 sum of three rows = 6 sum of four rows = 10 sum of ...
*June 27, 2009 by Keira*

**math**

The summ of two numbers is two. THe difference between eight and twice the smaller number is two less than four times the larger. Find the two munbers.
*September 30, 2007 by David*

**Math**

the ages of two brothers are 11 and 8 years. In how many years time will the product of their ages be 208?
*February 27, 2012 by Yana*

**math**

Which of the following is a subset of set A? A: {children between the ages of 3 and 7} a.children over 7 b.children3 years old c.children of all ages d.children under 3
*August 25, 2010 by star*

**Physics**

1.) a charge of -2x10^-9 C in an electric field between two metal plates 4cm apart is acted upon by a force of 10^-4 N. a.) what is the strength of the field? b.) what is the potential difference between the plates? my question: how will going to solve this kind of problem? ...
*February 8, 2009 by konan*

**algebra**

The present ages in years of four cousins are consecutive multiples of 3. Five years ago the sum of their ages was 46. What is their ages now?
*November 17, 2011 by Zephine*

**Statistics**

In an exam, we randomly chose some students who get both the pretest and the posttest. We are interested in the difference of the score of two test. Assume that the ¦Ò of score difference is 10 and the difference follows a normal distribution. If the H0 hypothesis is that ...
*October 12, 2011 by Katherine*

**Physics**

One volt is the potential difference between two points if 1 joule of energy is needed to move _____ coulomb of charge between the two points.
*March 17, 2008 by Anonymous*

**Math - Number Properties**

The positive difference between the integers u and v is 6. If w is also an integer and the positive difference between v and w is 5, what is the positive difference between u and w?
*September 10, 2013 by Venus*

**Reiny! Reiny! Reiny! Answer Check and HW Help!**

Translate to a system of equations and solve: 1) The sum of two numbers is 36. One number is 2 more than the other. Find the numbers. Answer: (17,19) 2) Find two numbers whose sum is 66 and whose difference is 18. Answer: (37,29) These ones I am not sure of: 3) The difference ...
*February 12, 2009 by Britney*

**physics**

24 joule work is done in moving a charge of 6c between two points. Calculate potential difference between this two points.
*May 11, 2014 by Jatindra Deori*

**physical**

24 joule work is done in moving a charge of 6c between two points. Calculate potential difference between this two points.
*May 11, 2014 by Jatindra Deori*

**math**

Five friends went to a baseball game. Three of the friends each bought tickets for x dollars and a soda for $6.00. The other two friends each bought only tickets. Write and simplify an expression that represents the amount of money spent.
*May 14, 2013 by Carabeth*

**English**

1. Most boys grow a lot between the age of 9 and 14. 2. Most boys grow a lot between the ages of 9 and 14. (Which one is correct? Do we have to use 'ages' or 'age' in the sentence?)
*May 26, 2010 by rfvv*

**Science**

Can you check this for me? What is the difference between homegenous mixtures and heterogeneous mixtures? The difference between the two is that in a homogeneous mixture, the ingredients or elements are uniformly spread while in a hetergeneous mixture, it's the exact opposite...
*February 26, 2009 by teamjakeward*

**Algebra**

Ella is twice Bella's age, and Stella is three times Bella's age. The difference between Stella's and Bella's ages is 8 yrs. How old is each girl?
*April 5, 2009 by Kim*

**math**

what is the answer to this question? The week before a big concert, five friends, alvin, bert, chip, dennis and ethan, stood in line to buy tickets. There were other people between them, but the five friends were in lin in the order listed above. the line was really long, and ...
*April 28, 2010 by jw*

**math**

what is the answer to this question? The week before a big concert, five friends, alvin, bert, chip, dennis and ethan, stood in line to buy tickets. There were other people between them, but the five friends were in lin in the order listed above. the line was really long, and ...
*April 28, 2010 by ursie*

**math**

the "k"th term of a series, Sk=a 1-r^k/1-r, is the sum of the first "k" terms of the underlying sequence. the difference between the "n"th terms of two particular series is greater than 14 for some values of n (is an element of) N. the series with general term tn=100 (11/17)^n...
*December 29, 2010 by liza*

**Math**

Six friends want to buy pizza and need to decide between two deals. The first deal is for two pizzas for $7.00 each for a pizza with a 10 inch diameter. Or a second deal with one pizza with a 14 inch diameter for $15.00. The friends decide to buy the offer with the most pizza ...
*May 30, 2013 by Susan*

**geometry**

Two triangles each have adjacent sides of length 120 feet and 180 feet. The first triangle has an angle between the two sides of 40 degrees, while the second triangle has an angle between the two sides of 60 degrees. What is the approximate difference between the areas of the ...
*May 2, 2012 by jordan*

**Algebra**

In algebra special products and teh questions says to factor the equation 200x^2-18 and I don't get how to. factor out a two, then what remains will be the difference between two perfect squares. I got as far as this 2(100x-3)^2 and that isn't right becaus ethe 18 has to be ...
*May 28, 2007 by Avalon*

**physics**

An electron is accelerated horizontally from rest in a television picture tube by a potential difference of 5400V . It then passes between two horizontal plates 6.1cm long and 1.2cm apart that have a potential difference of 250V At what angle will the electron be traveling ...
*March 23, 2010 by Jeremy*

**math**

The sum of two positive integers is 60 and their positive difference is 26. What is the positive difference between the squares of the two integers? Can anyone explain this one to me?
*September 17, 2009 by Michael*

**Maths**

A psychological test was given to 92 teenage boys and 68 teenage girls. The test was used to assign a score to each teenager, measured on the ‘worry scale’ – 0 (not worried) to 100 (very worried). A summary of the results is given in the table below. Girls; Sample Size 68 ...
*May 12, 2011 by Tony*

**English**

1. In the evening, Sonya will meet one of her friends. 2. In the evenings, Sonya will meet one of her friends. ------------------------- Thank you for your help. What is the difference between them. Does #1 mean "She will meet her friend this evening (once)." Does #2 mean "She...
*March 27, 2014 by rfvv*

**physics electricity**

An electric force moves a charge of +1.65 multiplied by 10-4 C from point A to point B and performs 6.40 multiplied by 10-3 J of work on the charge. (a) What is the difference (EPEA - EPEB) between the electric potential energies of the charge at the two points? (b) Determine ...
*January 3, 2010 by alex*

**Physics**

An electric force moves a charge of +1.40 x 10^-4 C from point A to point B and performs 4.70 x 10^-3 J of work on the charge. (a) What is the difference (EPEA - EPEB) between the electric potential energies of the charge at the two points? ____________J (b) Determine the ...
*September 3, 2007 by Mary*

**Pre-algerbra**

Ok, It is riddle. Jack is married to Jill. There son wants to know their age. Jack says,"if you reverse the digits in my age, you get your mother's. Jill said" The sum of my age is your dad's age equal to 11 times the difference in oour ages. Remember that I am older than your...
*September 4, 2008 by Cole*

**English expression**

Ask two your friends' names. Ask two of your friends' names. Ask the names of two friends of yours. ------------------------------ Which expression is grammatical?
*March 11, 2008 by John*

**math**

Reading readiness of preschoolers from an impoverished neighborhood (n=20) was measured using a standardized test. Nationally, the mean on this test for preschoolers is 30.9 with SD=2.08. A) Children below the 30th percentile (in the bottom 30%) are in need of special ...
*April 12, 2012 by Sasha*

**Physics**

When a charge of -4 x 10 to the minus 3 coulombs is moved between two points in an electric field, 0.8 joules of work are done on the charge. The potential difference between the two points is 300 V.
*May 29, 2011 by Scott*

**statistics**

From past experience it is felt that the random variable, X, the age of a mother at the birth of her first child, is normally distributed with a mean of 21.3 and a variance of 16. Find the probability that a randomly selected mother: (a) has her first child before age 16 (b) ...
*January 26, 2011 by Tian*

**Math**

The week before a big concert, five friends (Alvin, Bert, Chip, Dennis, and Ethan) stood in line to buy tickets. There were other people between them, but the five friends were in line in the order listed above. The line was really long, and they were pretty bored. Chip ...
*February 16, 2010 by Joe*

**math**

List the ages of two people in your life, one older than you and one younger than you. It would be best if the younger person was 15 years of age or younger. Find the prime factorizations of your age and the other two persons’ ages. Show your work listed by name and age. Make ...
*January 25, 2011 by melvin*

**SCIENCE**

What is the difference between (aq) and (l) ...what do they mean. I know Aq is a aueous solution while (l) is a liguid with only one element...but what is the difference between them? thanks duplicate post.
*December 11, 2006 by Krissy*

**english**

conversation between two friends on school of 2050 how it would be compared to present one
*November 7, 2011 by sam*

**English**

Hello. I really appreciate your help and answers but I didn't quite understand one of them. Will you please clarify one more time if "he doesn't have any friends" and "he doesn't have friends" are both correct and if "any" makes any difference. Thank you very much for your time.
*May 15, 2011 by Ilma*

**Algebra**

How do you write an algebraic expression for five friends went to a baseball game. Three of the friends each bought a ticket for x dollars and a soda for $6.00. The other two friends each bought only tickets. Write and simplify an expression that represents the amount of money...
*October 29, 2013 by Gabe*

**Statistics **

You want to know if there's a difference between the proportions of high school students and college students who read newspapers regularly. out of a random sample of 500 high-school students, 287 say they read newspapers regularly, and out of a random sample of 420 college ...
*May 1, 2014 by debbie*

**calculus**

I'm studying for a quiz on infinite series and convergence/divergence tests. I keep getting confused between the variables "k" and "n". What is the difference between the two?
*November 6, 2008 by Corianne*

**PHYSICS**

What is the magnitude of the electric field between two large parallel plates 2.0cm apart if a potential difference of 450 V is maintained between them?
*February 24, 2010 by Anonymous*

**math**

what is the vertical and horizontal difference between the two eqautions on a graph? please help me on this. These two eqautions when graphed are parralell to each other. But im not sure how to calculate the difference in vertical and horizontal. please help.
*February 16, 2009 by tyler smith*

**Math Check**

Are the equations for these questions right? 1) Erik has 2 part-time summer jobs. For Job 1 he gets $9/hr on weekdays and for Job 2 he gets $12/hr for weekends. Last week he worked 23 hours and he earned a total of $231. How many hours did he work on the weekend? 9x+12y = 231 ...
*November 19, 2008 by Samantha*

**Statistics**

There were two independent groups who took a school course by different modes. The first sample of students took the course in the online and the second sample took the course in the conventional face to face mode. Using the sample data determine if there is significant ...
*June 22, 2013 by Leah*

**Statistics**

To do inferential procedures comparing two proportions, we need another variance formula (our ruler). This formula is based on what principle? A) The variance of the difference of two statistics is the difference of the variances of each statistic. B) The variance of the ...
*November 15, 2013 by Katie*

**geometry**

two segments that are not congruent, their sum and their difference. Then subtract from the sum of the difference between them and verify that the segment obtained is twice the lower segment.
*September 4, 2011 by Anonymous*

**Physics**

Could you please check my answers and help me out with the last two? Thanxs! 1.Carefully define the following words: distance, displacement, speed, velocity, acceleration. Does it make a difference if we designate distance as "x" or "d"? (I dont understand this question) 2....
*September 2, 2007 by Jules*

**Algebra**

Two different cars each depreciate to 60% of their respective original values. The first car depreciates at an annual rate of 10%. The second car depreciates at an annual rate of 15%. What is the approximate difference in the ages of the two cars? 1.7 ears 2.0 years 3.1 years ...
*July 14, 2014 by Junior*

**English - Native speakers**

Thank you Writeacher for your answers today :) Here are some other questions :) : Do you say We've had a lot of rain recently or lots of rain? Can someone explain the difference between those two phrases - in your own words. Also what exactly is the difference between a little...
*March 9, 2011 by Mark*

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