Week+of+05-24-10

Section 1: Thought Question of the Week

 Give a real life example of how systems of equations can be applied to the real-world.

Name: Jon Libock Date: 5/28/10 Type of posting: 1 Posting: Systems of equations can be used in real life, like when you are trying to only use half of a recipe.

Name: Jeff Schecter  Date: 5/27/10  Type of posting: 1  Posting: You can use system of equations in real life when you are buying food. You are ordering food for a banquet and you want to know how much of each food you ordered. In order ot find out you would have to use systems of equations.

 Name: Max Mongiello  Date: 5*27*10  Type of Posting: 1  Post: Systems of equations can be applied to the real-world in many ways. An example of this is when you have sold multiple items, and know your total earnings, but want to know how many of each item you sold.

=Name: Jess Holzberg = =Date: 5/26/10 = =Type of posting: 1 = =Posting: An example of how systems of equations can be applied to the real-world, is that , a drink which consists of an egg, milk, and orange juice. Than you need to figure out how much of each ingredient you need to make a drink of a certain amount of calories and a certain amount of grams of protein. To answer that, let //<span style="font-family: Arial,Helvetica,sans-serif; font-size: 17px; font-weight: normal;">x // <span style="font-family: Arial,Helvetica,sans-serif; font-size: 17px; font-weight: normal; line-height: normal;">be the number of eggs, <span style="font-family: Times,helvetica,sans-serif; font-size: medium; line-height: normal;">//<span style="font-family: Arial,Helvetica,sans-serif; font-size: 17px; font-weight: normal;">y // <span style="font-family: Arial,Helvetica,sans-serif; font-size: 17px; font-weight: normal; line-height: normal;"> the amount of milk, and <span style="font-family: Times,helvetica,sans-serif; font-size: medium; line-height: normal;">//<span style="font-family: Arial,Helvetica,sans-serif; font-size: 17px; font-weight: normal;">z // <span style="font-family: Arial,Helvetica,sans-serif; font-size: 17px; font-weight: normal; line-height: normal;"> the amount of orange of juice. =

Name: Remzi Tonuzi Date 5/27/10 Type of Posting: 1 Posting: Systems of equations can be used in real life in many ways. One example is when you buy a CD and you want to find out the amount of money each song costs.

<span style="color: #ff007c; font-family: 'Comic Sans MS',cursive; font-size: 17px;"> Gregory Russo <span style="color: #ff007c; font-family: 'Comic Sans MS',cursive; font-size: 17px;"> Date: 5/31/10 <span style="color: #ff007c; font-family: 'Comic Sans MS',cursive; font-size: 17px;"> Typer of posting : 1 <span style="color: #ff007c; font-family: 'Comic Sans MS',cursive; font-size: 17px;"> An example of a real life situation using system of equations could be somthing that has to do with sales, as in if you sold x amount of things and you know how much you have earned from it, but you want to find out how much you sold.

= Name: Selma Zayer = = Date: 5/25/10 = = Type of posting: 1 = = Posting: real life examples of how systems of equations can be applied to the real-world is when a phone company charges you on the amount of minutes that are used, foreign currencies, interest rates, and travel. =

Name: Jordan Abend Date: 5/25/10 Type of posting: 1 Posting: A real life situation of systems of equations is when you and a friend go to Burger King and the total of both the meals is $14.57. You ordered three cheeseburgers and your friend bought two double cheeseburgers. You have to find out how much a cheeseburger and double cheeseburger cost. To solve this equation you must use x to = cost of cheesburger and y to = cost of double cheeseburger. You then make the equation 3x + 2y= 14.75.

Type of posting: 1
==== Posting: You can use system of equations if you run a store and you need to find out how many shirts and how many pants you sold by only having the total amount of money and total number of shirts and pants sold. For example, if each shirt is $55 and each pair of pants is $60 and together you sold 127 shirts and pants with a total of $7,000, you could use these equations to find the number for shirts and the number for pants: x + y = 127 and 55x + 60y = 7,000 ====

Name: Corey Pic Date: 5/27/10 Type of Posting: 1 Posting: A real life example of how systems of equations can be applied to the real world is that there is two competitive sports stores. One of the stores are called “Sports Universe”, and the other one is called “Sports R’ Us”. “Sports Universe” sells their baseball bats for $100, however, “Sports R’ Us” sells their baseball bats for $80 even though they are the same bats. The total combined amount of money the stores earned was $500. “Sports R’ Us” made $250 more than “Sports Universe. How much money did each store earn?

Type of posting: 1
==== Posting: A real life example of how system of equations can be applied to is when your at a grocery store buying food for a family dinner and you need to know how much of each kind of food is needed. To figure this out, using systems are necessary. ====

Name: Corey Date: 5/28/10 type of posting: 1 Posting: A real life example of how systems of equations can be applied to the real world is if you look to see how many digital downloads of one music album's are sold vs. the number of CD's bought for the same album. = = <span style="background-color: #000000; color: #ff007c; font-family: 'Comic Sans MS',cursive; font-size: 17px;">Name: Hailey Personette <span style="background-color: #000000; color: #ff007c; font-family: 'Comic Sans MS',cursive; font-size: 17px;"> Date: 5.28.10 <span style="background-color: #000000; color: #ff007c; font-family: 'Comic Sans MS',cursive; font-size: 17px;"> Type of Posting: 1 <span style="background-color: #000000; color: #ff007c; font-family: 'Comic Sans MS',cursive; font-size: 17px;"> Posting: <span style="background-color: #000000; color: #e000ff; font-family: 'Lucida Sans Unicode','Lucida Grande',sans-serif; font-size: 16px;">Systems of equations can be applied to real life. A good example of this is; if you are selling a variety of items and you want to find out of how much money you made off one specific item.

Name: Brittany Hand Date: 5-28-10 Type Of Posting: 1 Posting: If You Buy a CD on Itunes and you want to figure out the ammount of money per song

<span style="color: #0036ff; font-family: 'Comic Sans MS',cursive; font-size: 140%;">Name: Sammy Rosen <span style="color: #0036ff; font-family: 'Comic Sans MS',cursive; font-size: 140%;"> Date: 5-27-10 <span style="color: #0036ff; font-family: 'Comic Sans MS',cursive; font-size: 140%;"> Type of Posting: 1 <span style="color: #0036ff; font-family: 'Comic Sans MS',cursive; font-size: 140%;"> Posting: A system of equations can be applied to a real life situation when you are buying a few items at the supermarket and you want to find out how much one of the items were.

Name: Julian Gallardo Date: 6/1/10 Type Of Posting: 1 Posting: You can use system of equations in real life by... If you are making pasta alla vodka and it calls for a 2 pound recipe. if you dont need that much you have to cut it in half. Thats how you can use it in real life. <span style="color: #ff007c; font-family: 'Comic Sans MS',cursive; font-size: 17px;"> Sections 2 and 3: Questions on Homework <span style="color: #1cff00; font-family: 'Comic Sans MS',cursive; font-size: 14px;">//Please post any responses to homework questions right below the posting that you are answering.//

<span style="color: #0000ff; font-family: 'Comic Sans MS',cursive; font-size: 15.4px;">Name: Kennedy Clifford <span style="color: #0000ff; font-family: 'Comic Sans MS',cursive; font-size: 15.4px;"> Date: 5-25-10 <span style="color: #0000ff; font-family: 'Comic Sans MS',cursive; font-size: 15.4px;"> Type of Posting: 2 <span style="color: #0000ff; font-family: 'Comic Sans MS',cursive; font-size: 15.4px;"> Post: Hello everyone. I am having trouble with number 38 on tonight’s homework in the textbook. The problem is <span style="color: #ff4700; font-family: 'Comic Sans MS',cursive; font-size: 15.4px;">x2 – x -20 OVER x3 + 10x +24x <span style="color: #0000ff; font-family: 'Comic Sans MS',cursive; font-size: 15.4px;">. I know I have to set the polynomial in the denominator equal to zero, so I did and I got <span style="color: #ff4700; font-family: 'Comic Sans MS',cursive; font-size: 15.4px;">x3 + 10x +24x = 0 <span style="color: #0000ff; font-family: 'Comic Sans MS',cursive; font-size: 15.4px;">. I am confused on what to do for the next step because there is an <span style="color: #ff4700; font-family: 'Comic Sans MS',cursive; font-size: 15.4px;">x3 <span style="color: #0000ff; font-family: 'Comic Sans MS',cursive; font-size: 15.4px;"> and we’re used to seeing <span style="color: #ff4700; font-family: 'Comic Sans MS',cursive; font-size: 15.4px;">x2 <span style="color: #0000ff; font-family: 'Comic Sans MS',cursive; font-size: 15.4px;">there. I am sure this has an easy answer, but it would be great if someone could help me with the next step of this problem.

<span style="color: #0000ff; font-family: 'Comic Sans MS',cursive; font-size: 15.4px;">Name: Lerna Girgin <span style="color: #0000ff; font-family: 'Comic Sans MS',cursive; font-size: 15.4px;"> Date: 5/25/10 <span style="color: #0000ff; font-family: 'Comic Sans MS',cursive; font-size: 15.4px;"> Type of Posting: 2 <span style="color: #0000ff; font-family: 'Comic Sans MS',cursive; font-size: 15.4px;"> Posting: On tonight's homework, page 651, I am having trouble with number 39. The problem reads: <span style="color: #008000; font-family: 'Comic Sans MS',cursive; font-size: 15.4px;">n2-8n+12 over n3-12n2+36n <span style="color: #0000ff; font-family: 'Comic Sans MS',cursive; font-size: 15.4px;">. My problem is how to factor the denominator because it has 3 as its variable. I know that when its like that, you would have 3 solutions, but I'm not sure how to get the 3 solutions. My guess is to factor normally but use three parenthesis.

<span style="color: #2be92b; font-family: 'Comic Sans MS',cursive; font-size: 16px; line-height: 23px;">** Name: ** <span style="color: #800080; font-family: 'Comic Sans MS',cursive; font-size: 16px;"> Katie Brinskele <span style="color: #800080; font-family: 'Comic Sans MS',cursive; font-size: 16px;"> ** Date: ** <span style="color: #ff0000; font-family: 'Comic Sans MS',cursive; font-size: 16px; line-height: 23px;">5/25/10 <span style="color: #2be92b; font-family: 'Comic Sans MS',cursive; font-size: 16px; line-height: 23px;"> ** Type of posting: ** <span style="color: #ff0000; font-family: 'Comic Sans MS',cursive; font-size: 16px;"> 2 <span style="color: #2be92b; font-family: 'Comic Sans MS',cursive; font-size: 16px; line-height: 23px;"> ** Posting: Hey everyone, I have a question about numbers 24-27 on tonight's homework. For each of the variables in all 4 problems, for me, they were all unable to be equal to zero as the excluded value. I thought it was weird that it was the same answer for every single one, but maybe it's okay. Please help. Thank you. **

<span style="color: #2be92b; font-family: 'Comic Sans MS',cursive; font-size: 16px; line-height: 23px;"><span style="color: #808000; font-family: 'Comic Sans MS',cursive; font-size: 16px;">Name: <span style="color: #808000; font-family: 'Comic Sans MS',cursive; font-size: 16px;"> **Deniz Piatt** <span style="color: #808000; font-family: 'Comic Sans MS',cursive; font-size: 16px;"> Date: **<span style="color: #808000; font-family: 'Comic Sans MS',cursive; font-size: 16px;"> 5/25/10 ** Type of posting: ** 2 ** Posting: What's going on guys? I really don't have a question on a specific problem, but on a kind of problem (37-40 on hw tonight). See, for example, on #38, for the numerator I get X can't equal -4 and 5. For the denominator, I get X can't equal -4, and -6. Am I doing something wrong?

Name: Matt McGee Date: 5/27/10 type of posting: 2 Posting: hey deniz, nah the answer should be x can't equal -5, 6 and x can't equal 5, or -4.

==<span style="color: #32ff00; font-family: 'Lucida Console',Monaco,monospace;">// __Hi Guys. I have a question about the new topic that we are learning. If, for example, two terms in the numerator and the denominator cancel, would the term that canceled in the denominator still be an extraneous solution? Sorry if this is worded complicatedly. Please let me know :)__ <span style="font-family: Tahoma,Geneva,sans-serif; font-style: normal;">Name: Anna Behnke Date: 5/26/10 Type of Posting: 2 (response to Paige) Posting: Hey Paige! The term that canceled in the denominator would still be an extraneous solution because the first step you have to do to solve and simplify the question is take the solution from the original denominator. For example, you may get a solution like <span style="color: #ff0000; font-family: Tahoma,Geneva,sans-serif; font-style: normal;">x+3; 5 cannot equal <span style="font-family: Tahoma,Geneva,sans-serif; font-style: normal;">x. The <span style="color: #ff0000; font-family: Tahoma,Geneva,sans-serif; font-style: normal;">x+3 <span style="font-family: Tahoma,Geneva,sans-serif; font-style: normal;"> was the left over part of the numerator and the <span style="color: #ff0000; font-family: Tahoma,Geneva,sans-serif; font-style: normal;">5 cannot equal x <span style="font-family: Tahoma,Geneva,sans-serif; font-style: normal;"> is from the original denominator. I hope i helped! // ==

<span style="color: #0000ff; font-family: 'Comic Sans MS',cursive; font-size: 15.4px;">Name: Jake Waldron <span style="color: #0000ff; font-family: 'Comic Sans MS',cursive; font-size: 15.4px;"> Date: 5-26-10 <span style="color: #0000ff; font-family: 'Comic Sans MS',cursive; font-size: 15.4px;"> Type of Posting: 2 <span style="color: #0000ff; font-family: 'Comic Sans MS',cursive; font-size: 15.4px;"> Post: One way that system of equations can be used in real life is when you are renting a car, and you are trying to see which is the better value.

Name: Allison Rosenthal Date: 5-27-10 Type of Posting: 1 Posting: Hi, i have a question about tonight worksheet that we have for homework. For number number 6. can you start by simplifying the (n-2) or do you have to factor first.

Name: Morgan Thau Date:5/27/09 Type of posting: 2 (response to Allison)

Hey Allie! Ms. Garruto would rather you factor first then simplify but it really doesn't make a difference. Hope that helped!

Name: Nick Rizzo Date: 5/27/10 Type of Posting: 2 Posting: Hello everybody :) For number 12 on the homework I just wanted to double check with everybody to see if they did the same thing as I did. When I cross-simplified, I reduced the c squared to c and then got rid of the c on the other side. I just wanted to double-check to make sure it was correct. After that the 4 and the 12 were reduced. It left me with 1-C and 3. My final answer was 1- C/ 3. I hope this is corrects, thanks for your time :)

Drew Mann: Date:5/28/10 Type of posting:1 Posting: Systems of equations can be used for anything. If you are selling food and you want to find out of how much money you made off a specific item you use systems of equations.

**<span style="color: #ff0000; font-family: 'Lucida Console',Monaco,monospace;">Type of Posting: 2 **
Posting- System of Equations can be used when you go to the pencil store. If you buy x pencils and x notebooks. You can use math to find out how much money will be spent with x amount of pencils and x amount of notebooks. This would be using a equation to real life.

=<span style="font-family: Arial,Helvetica,sans-serif; font-size: 17px; font-weight: normal;">Name: Will Calderone = =<span style="font-family: Arial,Helvetica,sans-serif; font-size: 17px; font-weight: normal;">Date: 6/1/10 = =<span style="font-family: Arial,Helvetica,sans-serif; font-size: 17px; font-weight: normal;">Type of posting: 1 = =<span style="font-family: Arial,Helvetica,sans-serif; font-size: 17px; font-weight: normal;">Posting: you can use system of equations to determine the speed of a vehicle like an air plane. Name - Danny Sabatino Date - 6/1/10 Type of posting - 1 Posting - System of equations can be used for many things in the real life world. One thing it can be used for is for renting a car, speed of a plane, or food. Also, by using this system you can see which is a better deal or the money you are making. =

Name:Andy Kovner and Jared Mactas! Date: 6/1/10 Type of Posting 2: Posting: Hey everyone, how was your extended weekend! Systems of equations can be used for many things in the real world. One thing is to buy something that has a variety of factors and types involved. You can use the systems of equations to compare the different factors and things that come in to purchasing a product.

Name: Mara Schwartz Date: 6/ 1/ 10 Type of Posting:2 Posting: Hi everyone, I was having trouble with chapter 12-4 on our Glenco quiz. Specifically this problem: h^2-4h-60 over 5 divided by h+6 over h-6. thank you!