Wednesday

February 10, 2016
Total # Posts: 2,334

**Physics (Potential & Kinetic energy)**

A 2.0 kg rock falls from a height of 25 m to a point 20 m above the ground. a) how much potential energy does it lose? b) How much kinetic energy does it gain? Thanks.
*January 11, 2010*

**Physics**

A 2000 kg truck is raised 15 m in an elevator. What is the increase in its potential energy?
*January 11, 2010*

**French-Urgent**

With a partner, play the roles of an American student who is shopping at a ski resort in the french Alps and the salesclerk at the resort's boutique. The customer's brother wants a nice French ski jacket and has given the customer enough money to buy it. During the ...
*January 10, 2010*

**Math (combinations)**

that did not help at all I need clarification. How is this supposed to be done.
*January 10, 2010*

**Math (combinations)**

so would I do the 3 choices of bread like 3x2x1=6 and then the meat 5x4x3x2x1=120 and then add them all together?
*January 10, 2010*

**Math (combinations)**

A sandwich shop has the advertising slogan, “10,000 different sandwiches & one little eatery”. The shop offers its sandwiches with various combinations of mustard, catsup, mayonnaise, Cajun spice, relish, pickles, tomatoes, and lettuce. Customers can also choose ...
*January 10, 2010*

**Math (measurement)**

But for a tetrahedron the bottom is not square it is a triangle. Does this formula still apply?
*January 10, 2010*

**Math (measurement)**

Find the volume of a regular tetrahedron in which each edge is 8 in. long. I am so confused on this one and I really need some help.
*January 10, 2010*

**Math (expected value)**

A roulette wheel in Las Vegas has 18 red slots and 18 black slots numbered alternately with the numbers 1 through 36. Two green slots are numbered 0 and 00. The winning number is determined by the slot into which a single marble rolls. Players are not allowed to bet on green. ...
*January 10, 2010*

**algebra**

I am gathering there is no solution because in the second equation it would not be 2 it would be -2...am I right?
*January 9, 2010*

**algebra**

I am to solve this system of equations x+3y=8 x=4-3y I got (2,2), but I am not sure if this is righ, can you help me?
*January 9, 2010*

**Math**

A: Solve the following equation: k2 + 4k = 0 A: By factoring B: By using the quadratic formula
*January 9, 2010*

**algebra**

You cannot do that on a system of equations like this
*January 9, 2010*

**algebra**

Helpme solve this please i am really stuck x+3y=8 x=4-3y
*January 9, 2010*

**algebra**

Oh my gosh I completely missed that, thank you.
*January 9, 2010*

**Math**

I need to know the standard deviation and how to get it for the following set of numbers. {10, 11, 10, 12, 11, 10, 11, 11, 12, 13, 11, 10, 14}
*January 9, 2010*

**Math**

If each score in a set of test scores is divided by 10, describe the effect of the division on the mean, median, mode, range, and standard deviation of the set.
*January 9, 2010*

**Math**

{-1, 0, 1, 2, -1, 0, 1, 2, -1, 0, 1, 2, 1, 1, -2} I need to find the standard deviation of this set of numbers please help!!!
*January 9, 2010*

**Math**

Give the equation of a line perpendicular to the line y = -8x + 8 having the y-intercept 2 units below the y-intercept of the given equation. At what point the two equations cross each other?
*January 9, 2010*

**Math**

Give the equation of the line that passes through point (1, 2) and is parallel to the line y + 6x -7 = 0. I have a really have issues trying to figure these out so if I could get a step by step break down on how to solve this it would be great.
*January 9, 2010*

**French**

thanks Sra
*January 6, 2010*

**French**

1.Est-ce que tu travailles dans une boutique, un magasin ou un grand magasin? 1.Je ne travaille pas n'importe où pour le moment. 2.Est-ce que tu aimes acheter des vêtements? 2.Oui, j'aime acheter des vêtements. 3.Qu'est-ce que tu cherches quand ...
*January 6, 2010*

**French**

1.Est-ce que tu travailles dans une boutique, un magasin ou un grand magasin? 1.Je ne travaille pas n'importe où pour le moment. 2.Est-ce que tu aimes acheter des vêtements? 2.Oui, j'aime acheter des vêtements. 3.Qu'est-ce que tu cherches quand ...
*January 6, 2010*

**French**

yeah, thanks!
*January 6, 2010*

**French**

Original Poem-Formula Poetry line one = a noun line two = 2 adjs. that describe the noun line three = a sentence describing noun. line four = another word that has the same meaning as noun. Could I have an example on this please.
*January 6, 2010*

**probability**

A survey of 850 students conducted in two schools showed the following results: School A: *Students who took the bus = 400 * Students who did not take the bus = 150 Total = 550 School B: *Students who took the bus = 200 * Students who did not take the bus = 100 Total = 300 ...
*January 5, 2010*

**Probability**

Thank you so much! :)
*January 5, 2010*

**Probability**

In how many different ways can the letters of the word SANTACLAUS be arranged?
*January 5, 2010*

**trig**

how do i find cosX if i am given sin x= -4/5 and tan <o???
*January 3, 2010*

**MATH (expansion)**

Which of the following represents the fourth term of the expansion (6x^3+(1/2)y)^6?
*January 3, 2010*

**Probability**

A school has 8 math teachers, 6 English teachers, and 2 geography teachers. From this group, a 5 teacher committee is required. Calculate the number of ways that this committee can be formed if at least one geography teachers must be on the committee.
*January 2, 2010*

**Probability**

Two soccer players have one penalty kick each. The probability of each player scoring with a penalty kick is 0.2 and 0.3, respectively. What is the probability that at least one of them will score?
*January 2, 2010*

**Probability**

A game begins with two cards being dealt from a standard deck of 2 cards. To win this game, the next card must be the same as either of these first two cards, or fall between them. If the first two cards are a 4 and a 9, what is the probability of winning the game?
*January 2, 2010*

**Probability**

One of two cards is black on one side and white on the other side. The second card is black on both sides. One card is selected at random and the side facing up is black. What is the probability that the other side of the card is white?
*January 2, 2010*

**Probability**

What is the probability that you get at least one head in 4 tosses of a fair coin? 15/16, 3/4, 1/2, or 1/16?
*January 2, 2010*

**probability**

A fair die is thrown twice. What is the probability of obtaining two "sixes"? 1/36, 5/36, 5/6, or 1/6?
*January 1, 2010*

**Probability**

The probability of drawing a red Jack or red Queen from a standard deck of cards is...? 1/13, 12/13, 4/13, or 9/13?
*January 1, 2010*

**probability**

Oh. Alright. Thanks.
*January 1, 2010*

**probability**

Okay, for this one, I know it's either one of two answers. In how many different ways can 7 different people line up for a picture? 49, or 823543.
*January 1, 2010*

**Math**

(Both the 72 and 68 are subscript) 72 C 68 is: 1028790, 24690960, 12345480, or 514395?
*January 1, 2010*

**Probability**

How many different four-digit numbers can be formed using the digits 3,2,1, and 0? 9,18,24, or 36?
*January 1, 2010*

**probability**

A student has a choice of five different computers, three different monitors and seven different printers. How many different computer systems are possible? 15, 56, 105, or 128?
*January 1, 2010*

**science**

what are the components of electromagnectic field?
*December 31, 2009*

**French-Sra**

Au grand magasin -des chausettes violettes-3,81€ -des baskets rouges-30,49€ -un tee-shirt vert-9,15€ -un tee-shirt bleu-7,62€ -un jean bleu-30,34€ -un pull gris-18,14€ Total= 99, 55€ À la boutique -des chaussettes roses-6,86€ -des...
*December 29, 2009*

**French-Sra**

Sorry, I forgot to put the comparison in French. Here it is, please make any corrections. I've put stars beside the french comparisons. The baskets rouges in the Grand magasin are much lower in price than the baskets noires in the Boutique. *Les baskets rouges dans le ...
*December 29, 2009*

**French-Sra**

Thanks Sra for helping me with my post yesterday. I also think that question is asking me to only compare the price differences. I have done that below. The baskets rouges in the Grand magasin are much lower in price than the baskets noires in the Boutique. The chaussettes ...
*December 29, 2009*

**French**

It's near the end of your trip to France. You decide to do some comparative clothes shopping before you spend the 100 euros you saved to buy clothes with. Your two favourite stores are a big department store and a small boutique. Compare the items that you see at eachs ...
*December 28, 2009*

**French/Spanish greetings**

Joyeux Noël et meilleurs voeux pour une bonne et prospère année.
*December 24, 2009*

**Seasons Greetings from Dr Russ**

Merry christmas and happy holidays.
*December 24, 2009*

**French**

Thank you Kanon. I hope that you have a wonderful christmas.
*December 21, 2009*

**French**

Agree with what the French exchange student says about some of the people in your school. Use the indicated noun in each of your sentences. 1.Matt est timide.(un garçon) Oui, c'est un garçon timide! 2.Mrs. Johnson est bavarde.(un prof) Oui, c'est un prof ...
*December 21, 2009*

**Math**

. Give the equation of the line that passes through point (5, 1) and is parallel to the line y = 3x – 1. Please help, I am so confused.
*December 20, 2009*

**Math**

I really need help with this I do not know how to solve quadratic equations
*December 20, 2009*

**Math**

Solve the quadratic equation using any technique you wish. Name the technique. Check. 12x2 + 10x = 0
*December 20, 2009*

**Math**

The Maximum Garden Problem. A farmer has 230 ft of fence to enclose a rectangular garden. What is the largest garden area that can be enclosed with the 230 ft of fence?
*December 20, 2009*

**Math**

Okay that clears it up. Thank you very much for your help.
*December 20, 2009*

**Math**

I am still confused, I understand finding the difference and that being 0.65. What I am not sure about is where you wrote c(x)=mx+0.10. I know that the C stands for cost, should the x be a y? I know that m stands for slope but what is the 0.10? I really do not understand ...
*December 20, 2009*

**Math**

The Juice Problem. A store sells a 1-liter container of juice for 75¢ and a 2-liter container for $1.40. Assume that the cost varies linearly with the number of liters, and find the slope of the line that shows the relationship. How many liters would be in a container ...
*December 20, 2009*

**MATH**

Simplify p^(logp 12 - log p3) *The 'p's are subscript
*December 19, 2009*

**Chemistry**

Thanks
*December 18, 2009*

**Chemistry**

Can anyone explain this question to me? Which of MgCO3, NaOH and Mg(OH)2 can be used as an indicator of halide anions in solution. I don't understand what this means.
*December 18, 2009*

**To-SraJMcGin(French)**

I just read your previous post; okay I'll wait patiently till tom, thanks for all your help Sra, and I hope that you have a wonderful christmas.
*December 17, 2009*

**To-SraJMcGin(French)**

I posted my paragraph for you to check through once more, I made all corrections and even put it in english version, so that it's easier for you. Perhaps you never noticed it; I would really like to get it done by tom.
*December 17, 2009*

**French-Sra**

I'm sure that this paragraph is better than the last one. I did it in english version as well. Please make any corrections, and I'm sorry for having you check this again. I really appreciate all your effort and time Sra. Mon arbre de Noël de famille est dans ma ...
*December 17, 2009*

**To- SraJMcGin**

Please make any corrections. I have fixed my mistakes. Mon arbre de Noel de ma famille est dans mon grand salon et il a des tonnes de cadeaux sous. J'ai contribue à décorer avec ma simple et les frères. Nous avons décoré notre Noel avec ...
*December 16, 2009*

**To- SraJMcGin**

I still have to make corrections for my paragraph, I have fixed some of it; for the second part just see if I have corrected this right. = et de le rendre encore magnifique
*December 16, 2009*

**To- SraJMcGin**

I tried to fix these sentences, please make any corrections. Nous avons décoré notre Noël avec de différents types d'ornements, tels que les anges, des bonhommes de neige, les flocons de neige, les étoiles, et ainsi de suite. Notre arbre de...
*December 16, 2009*

**AP Physics B**

how do yo find the spring constant?
*December 16, 2009*

**French**

For this sentence: peu bas minis et ainsi de suite-I was trying to say= little mini stockings and so on.
*December 16, 2009*

**To- SraJMcGin & Mathmate**

Thanks for all your help :)
*December 16, 2009*

**French**

I've been waiting quite a while, for a response. Creez un paragraphe d'au moins dix phrases qui dicrit le sapin de Noel de votre famille. Les phrases peuvent être au présent, mais vous recevrez des points bonus si vous essayez d'écrire quelques ...
*December 15, 2009*

**French**

Creez un paragraphe d'au moins dix phrases qui dicrit le sapin de Noel de votre famille. Les phrases peuvent être au présent, mais vous recevrez des points bonus si vous essayez d'écrire quelques phrases au future. Quand vous finissez vos phrases, ...
*December 15, 2009*

**French**

thank you
*December 14, 2009*

**French**

1.Avec qui fais-tu souvent les magasins? - Je fais souvent les magasins avec ma mère. 2.Où vas-tu pour acheter des vêtements? -J'acheter des vêtements from un centre commercial, un grand magasin, etc. 3.Est-ce que tu aimes acheter des vê...
*December 14, 2009*

**French**

thank you
*December 14, 2009*

**French**

Imagine that you work at a travel agency. Clients ask you what they should pack when planning a trip to certain French-speaking vacation spots during the winter and spring travel seasons. According to the weather report you recieve from each city's tourist bureau, select ...
*December 14, 2009*

**Math**

For which table(s) of values in Exercises 39–42 is the relationship linear? Tell how you decided. Write the equation for each linear relationship. x 5 10 15 20 25 30 y 20 30 40 50 50 50 I do not think that this is a linear equation but I cannot determine the pattern so ...
*December 11, 2009*

**French**

thanks Kanon;)le Mexique was used in the example in my book, sorry about that inconvenience
*December 10, 2009*

**French**

Tell where some of the friends are going choosing from the locations in the following list. -la boum de Marc -la boutique -le cinéma -l'école -le Mexique -le fast-food -les États-Unis 1.Béatrice et Éric vont danser samedi soir. =Ils vont ...
*December 10, 2009*

**Math**

When the graph of y=2^x is reflected in the x-axis, and then translated 5 units left and 1 unit down, the equation representing the new graph is: a) y=2^(-x+5)-1 b) y=2^(x+5)-1 c) y=2^(x-5)+1 d) y=2^(x+5)-1
*December 6, 2009*

**French**

En été la température moyenne dans ma région est de 25 degrés celsius. En hiver la température moyenne est de -10 dégres celsius. A'l'automne, la température typique est de 7 dégres celsius. Au printemps, ...
*November 26, 2009*

**French**

Your new pen pal from Guadeloupe is curious to find out if the seasons change where you live and what the weather is like. In a note to your pen pal, tell what the weather is like during the four seasons in your area. Give a typical temperature for each season using the ...
*November 26, 2009*

**French**

thanks for the advice Writeacher
*November 26, 2009*

**French**

Thanks
*November 26, 2009*

**French**

Get to know your partner better by asking and answering questions. Student A asks questions using inversions. Student B asks using est-ce que. 1.avec qui/aller au cinéma Student A:Avec qui vas-tu au cinéma? Student B:Je vais au cinéma avec mes amis. Avec ...
*November 26, 2009*

**French**

thanks 4 ur help kanon
*November 25, 2009*

**French**

sorry, this is how #9 was supposed to be, I missed out a lot. 9.-Est-ce que ta famille voyage beaucoup? -Pardon? -Voyage ta famille beaucoup?
*November 25, 2009*

**French**

You're talking to your french pal on the phone. Unfortunately, you have a bad connection. Rephrase each question you ask using inversion. 1.-Est-ce que tu danses bien? -Pardon? =Danses-tu bien? 2.-Tes amis et toi, vous allez souvent en boîte? -Pardon? =Allez-vous ...
*November 25, 2009*

**French**

thanks Sra, I value your help
*November 25, 2009*

**French**

My mistake, I forgot to add the question marks at the end while posting, so I'll correct that.
*November 25, 2009*

**French**

Pratique Find out if your friends are doing what you think they're doing by forming questions using inversion. 1.Valérie/finir les devoirs Valérie finit les devoirs. 2.Christophe/parler avec le prof Christophe parle-t-il avec le prof. 3.Fatima/travailler ...
*November 25, 2009*

**French**

thanks Kanon, you are really helpful
*November 24, 2009*

**French**

Est-ce que tu travailles après les cours? I want to know what type of work this question is referring to. A job? Homework? Homechores?
*November 24, 2009*

**Probability**

Find the probability of obtaining between 50 and 55 tails inclusive when a fair coin is flipped 80 times. (answer accurate to four decimal places.)
*November 22, 2009*

**Probability**

From a group of eight women and seven men, a committee of six is chosen randomly. Find the probability that three women and three men will be chosen.
*November 22, 2009*

**Probability**

The serial number on a $10 bill contains eight non-zero digits. If your $10 bill contains the digit 7 at least once, you win a prize. The probability that your $10 bill will be a prize-winning bill is what?
*November 21, 2009*

**French**

thank u Kanon, u were a lot of help
*November 18, 2009*

**French**

From the list of occupations, I picked my top 5 favourite, and they were, 1. journaliste 2. Professeur 3. Dentiste 4. Cuisinière 5. infirmière My next task is- For each of your top five career choices in Activity 9, determine what 3 classes in high school you ...
*November 18, 2009*

**earth science**

What effects do convection currents have on the mantle and crust that would not happen if convection currents didn't exist?
*November 18, 2009*

**HTT /200**

a. List at least five federal agencies that might produce statistics or demographic data of interest to the hospitality industry. Describe the data that each agency provides and why it might be important to the hospitality industry.
*November 16, 2009*