Week+of+02-01-10

=
The sum of the digits of a two-digit number is 9. When the digits are reversed, the number is increased by 45. Find the number. ======

Type of posting: 1
===Posting: If you add 2 and 7 you will get 9. That makes the two digit number 27. If you add 27 by 45 you get 72. The digits are reserved with 27 and 72. ===

Type of posting: 1
===Posting: **Ok... You girls are using guess and check. That is fine, but are there any ways that we can use systems of equations to answer this question?** ===

**27 are the reserved digits for 72 **
**Name:** Jon Libock  **Date:** 2/2/10  **Type of posting:** 1  **Posting:** Does the fact that 9, 27, 45, and 72 are all factors of 9 have something to do with this problem? Like if we subtract 45 - 9 we get 36, and then if we times that by 2 we get 72 (36 * 2 = 72), then we reverse it to get 27.

 ** Type of posting: ** 1
====** Posting: ** The answer is 27. When you add 2+7, the answer is nine. Reversed, the number is 72. 72-45 is 27, making the answer 27. :D ==== **Name: Remzi Tonuzi** **Date: 2/4/10** **Type of Posting: 1** **Posting: If you add 2 and 7 you will get 9. If you reverse 2 and 7 it's 72. So 72-45=27 and that's how you get 27 as your answer.**

 Sections 2 and 3: Questions on Homework  // Please post any responses to homework questions right below the posting that you are answering. //

 ** Name: ** Jordan Abend  **Date:** 2/2/10 <span style="color: #2be92b; font-family: 'Comic Sans MS',cursive;"> ** Type of posting: ** 2 <span style="color: #2be92b; font-family: 'Comic Sans MS',cursive;"> ** Posting: ** Hey everyone. How are you doing. I am really having trouble with number 30 for homework. I am unsure of what to put as my second equation. For my variables, I put x= the # of lbs of raisins and y= the # of lbs or sunflower seeds. My first equation was 1.5x + 4y =34. I multiplied the amount of money each pound of sunflower seeds and raisins cost against how many pounds is in the mix. Can someone help me? It would be much appreciated and I thank you for your time and effort.

<span style="color: #2be92b; font-family: 'Comic Sans MS',cursive;"> ** Name: ** Kennedy Clifford <span style="color: #0036ff; font-family: 'Comic Sans MS',cursive; font-size: 16px; line-height: 23px;"> **Date:** 2/2/10 <span style="color: #2be92b; font-family: 'Comic Sans MS',cursive;"> ** Type of posting: ** 2 respond to Jordan's question <span style="color: #2be92b; font-family: 'Comic Sans MS',cursive; font-size: 16px; line-height: 23px;"> ** Posting: For the second equation I did 3x=y because in the problem it says "The mix will have three times the number of pounds of raisins as sunflower seeds." If X represents the number of pounds of raisins then you need a 3 in front of it to signify multiplication (this would be for where it says three times the number of pounds of raisins .) Then you would add the ** =y ** to the equation because the problem says "... as sunflower seeds " and the word "as" represents equals and Y represents the number of pounds of sunflower seeds. ** <span style="color: #2be92b; font-family: 'Comic Sans MS',cursive; font-size: 16px; line-height: 23px;">** Hope this helped. **

<span style="color: #2be92b; font-family: 'Comic Sans MS',cursive; font-size: 16px; line-height: 23px;">**Name:** Nick Rizzo <span style="color: #0036ff; font-family: 'Comic Sans MS',cursive; font-size: 16px; line-height: 23px;"> ** Date: ** <span style="color: #ff5900; font-family: 'Comic Sans MS',cursive; font-size: 16px; line-height: 23px;"> 2/2/10 <span style="color: #2be92b; font-family: 'Comic Sans MS',cursive; font-size: 16px; line-height: 23px;"> ** Type of posting: ** <span style="color: #800080; font-family: 'Comic Sans MS',cursive; font-size: 16px; line-height: 23px;"> 2 <span style="color: #2be92b; font-family: 'Comic Sans MS',cursive; font-size: 16px; line-height: 23px;"> ** Posting: Hey guys what's up? I am sitting here trying to do number thirty six on the homework and I can't figure out if I have the correct equations or not. The two equations I chose was ** <span style="color: #2be92b; font-family: 'Comic Sans MS',cursive; font-size: 16px; line-height: 23px;">** 4x + 6y= 24 and X + Y = 24. When I use elimination and do all the math, I come up with a negative amount and that cannot be right. Can someone please help me with what the equations would be and how they arrived to this answer? Thanks for the help guys :-) **

<span style="color: #2be92b; font-family: 'Comic Sans MS',cursive;"> Name:  ** Lauren Thau ** <span style="color: #2be92b; font-family: 'Comic Sans MS',cursive;"> Date: **2/2/10** Type of posting: ** 2 ** Posting: ** Hey everyone. I really had trouble with number 30 on the homework assignment. I know that I have to define my variables but if y = the amount of sunflower seeds in pounds, what will be my x if there was three times the number of pounds of raisins as sunflower seeds. Thanks so much. **

Name: **Jared Mactas** ** Date: 2/2/10 ** Type of posting: 2 Posting: **Hey everyone. I ready had trouble on number 33 on the homework. Although I know how many each have won I still can't get the right answer. I defined my variables as x for the Yankees and y for the Reds. I have my first equation which is x+y = 31, but I cant find the next equation to solve for my answer. What can the second equation be so I can solve for each of the World Series wins by both teams. Thank you.**

** Name: **Deniz Piatt Date: 2/2/10
 * Type of posting: 2 **
 * Posting: **** Whats up everybody? I need help on #32 on setting up my second equation. My variables are " **//** X = # of degrees in angle X. Y = # of degrees in angle Y. **//** " This would lead to my first equation being x+y=180. I think my second equation is 24x=y, but my answers are ** __** WEIRD **__**<span style="color: #1500ff; font-family: Arial,Helvetica,sans-serif;"> decimals. I would normally accept a decimal, but these are off. Am i on the right track with the second equations, or can you help send me in the right direction? **

<span style="color: #2be92b; font-family: 'Comic Sans MS',cursive;"> ** Name: ** Julian Gallardo <span style="color: #0036ff; font-family: 'Comic Sans MS',cursive; font-size: 16px; line-height: 23px;"> **Date:** 2/3/10 <span style="color: #2be92b; font-family: 'Comic Sans MS',cursive;"> ** Type of posting: ** 2 <span style="color: #2be92b; font-family: 'Comic Sans MS',cursive;"> ** Posting: ** Hey everyone. I really had trouble with number 1 on the front of the homework assignment. Here is the problem: <span style="color: #ff0000; font-family: 'Comic Sans MS',cursive; font-size: 16px; line-height: 23px;">Sharon is six years older than Teresa. Eight years ago, Sharon was four times as old as Teresa. How old are Sharon and Teresa. <span style="color: #0036ff; font-family: 'Comic Sans MS',cursive; font-size: 16px;">I know that I am supposed to set up two equations and name the variables. I have that x= Sharon's age and y= Teresa's age. I am having trouble with setting up the equations can someone help? Thanks.

<span style="color: #2be92b; font-family: 'Comic Sans MS',cursive;"> ** Type of posting: ** 3
==<span style="color: #2be92b; font-family: 'Comic Sans MS',cursive; font-size: 16px; line-height: 23px;">** Posting: ** **<span style="color: #ff00ff; font-family: 'Comic Sans MS',cursive; font-size: 90%;">(Answer to Julian's question) Hey. The problem says __Sharon is six years older than Teresa.__ If x = Sharon's age and y=Teresa's age then the first equation could be x=6+y. Then the equation says __Sharon__ **<span style="color: #ff00ff; font-family: 'Comic Sans MS',cursive;">__was four times as old as Teresa.__ **<span style="color: #ff00ff; font-family: 'Comic Sans MS',cursive;"> The second equation could be x=4y. Then you solve it. **==

Type of posting: **<span style="color: #0036ff; font-family: 'Comic Sans MS',cursive; font-size: 16px; font-weight: normal; line-height: 23px;"> 2 **
== Posting: **<span style="color: #0036ff; font-family: 'Comic Sans MS',cursive; font-size: 16px; font-weight: normal; line-height: 23px;">Hey everyone! I am having trouble with number two on the front page of the Systems Applications. The problem is: <span style="color: #9d1ad1; font-family: 'Comic Sans MS',cursive; font-size: 16px; font-weight: normal; line-height: 23px;">How many pounds of nuts selling for $6.00 per pound and raisins selling for $3.00 per pound should Kelli combine to obtain 60 pounds of a trail mix selling for $5.0 per pound? <span style="color: #0036ff; font-family: 'Comic Sans MS',cursive; font-size: 16px; font-weight: normal; line-height: 23px;"> I know that x= nuts, and y= raisins. I also know that the first equation is x+y=60. I think the second equation is 6.00x + 3.00y = 5.00. I don't know if I put 60 after the 5.00. **==

<span style="color: #0000ff; font-family: 'Comic Sans MS',cursive; font-size: 16px;">Type of posting: 2
==<span style="color: #0000ff; font-family: 'Comic Sans MS',cursive; font-size: 16px;">Posting: Hi i am having trouble with problem 2 on tonight's home work. The Problem is How many pounds of nuts selling for $6.00 per pound and rasins selling for $3.00 per pound, should Kelli combine to obtain 60 lbs of a trail mix selling for $5.00 per pound? <span style="color: #0000ff; font-family: 'Comic Sans MS',cursive; font-size: 16px;">I have the first equation but i am having trouble figuring out the second. Can anyone help Please?? My first equation is <span style="color: #ff0000; font-family: 'Comic Sans MS',cursive; font-size: 16px;">6x+3y=60x5 ==

**Name:** **Jon Libock** **Date: 2/4/10** **Type of posting: 2** **Posting: Hey Chris and Morgan, and everyone else. What you have to do is first get your equation, which took me a while too. Since you need both the nuts and raisins to add up to 60 Lbs. you need to do** **X + Y = 60.** **(X being the number of nuts and Y being the number of raisins) Then since X is $6 per pound and Y is $3 per pound, and its 60 pounds and $5 per pound the equation is** **6X + 3Y = 60 * 5.** **Then you solve from there.** **(I used substitution)** **Then your final answer will be 40 Lbs of nuts and 20 Lbs of raisins.**

**Name: Max Mongiello** **Date:2/5/10** **Type of posting: 2** **Posting: Hello everyone, How art thou? I am having trouble with number 3 on the systems applications page. I don't understand how to set up the equations. Can you help me figure it out and get on the right track so that I can answer the problem?**

<span style="color: #000000; font-family: Arial,Helvetica,sans-serif; font-size: 16pt;">Name: Jeff Schecter <span style="color: #000000; font-family: Arial,Helvetica,sans-serif; font-size: 16pt;"> Date: 2/5/10 <span style="color: #000000; font-family: Arial,Helvetica,sans-serif; font-size: 16pt;"> Type of posting: 3 <span style="color: #000000; font-family: Arial,Helvetica,sans-serif; font-size: 16pt;"> Posting: Hello everybody. How are you guys doing? Max the correct equations should be <span style="color: #ff007c; font-family: Arial,Helvetica,sans-serif; font-size: 16pt;">x+y= 38 <span style="color: #000000; font-family: Arial,Helvetica,sans-serif; font-size: 16pt;">and the other one is <span style="color: #000000; font-family: Arial,Helvetica,sans-serif;"><span style="color: #000000; font-family: Arial,Helvetica,sans-serif;">y=x-4. <span style="color: #000000; font-family: Arial,Helvetica,sans-serif; font-size: 16pt;">Then I used substitution to solve the equation. I found that Pocahontas sold 17 million copies and Toy Story sold 21 million copies for a total of 38 million total copies sold.

<span style="color: #2be92b; font-family: 'Comic Sans MS',cursive;"> ** Name: ** Hailey Personette <span style="color: #0036ff; font-family: 'Comic Sans MS',cursive; font-size: 16px; line-height: 23px;"> **Date:** 2/4/10 <span style="color: #2be92b; font-family: 'Comic Sans MS',cursive;"> ** Type of posting: ** 2 <span style="color: #2be92b; font-family: 'Comic Sans MS',cursive; font-size: 16px; line-height: 23px;"> ** Posting: ** Hello fellow classmates =] .. Hows it going? I was working on the homework from last night and I get to the graphing part and never seem to remember which way I'm suppose to shade. I just wanted to know which way you're suppose to shade and why?

<span style="color: #2be92b; font-family: 'Comic Sans MS',cursive;"> ** Name: ** Paige Alenick <span style="color: #0036ff; font-family: 'Comic Sans MS',cursive; font-size: 16px; line-height: 23px;"> **Date:** 2/4/10 <span style="color: #2be92b; font-family: 'Comic Sans MS',cursive;"> ** Type of posting: ** 2 (response to Hailey's question)

=<span style="color: #2be92b; font-family: 'Comic Sans MS',cursive; font-size: 16px; line-height: 23px;">** Posting: ** ** Hey guys. Hailey, when there is a greater than sign (>) then you shade ABOVE the line. This is because the solution set is in the quadrants with positive numbers. When there is a less than sign (<) then you shade BELOW the line. In this case, the solution set in the quadrants with negative numbers. **= = Name: ** Katie Brinskele **= <span style="color: #0036ff; font-family: 'Comic Sans MS',cursive; font-size: 16px; line-height: 23px;">**Date:** 2/4/10 <span style="color: #2be92b; font-family: 'Comic Sans MS',cursive;"> ** Type of posting: ** 2 <span style="color: #2be92b; font-family: 'Comic Sans MS',cursive;"> ** Posting: ** Hey everyone. I was a little confused on number 6 of the homework: <span style="color: #ff0000; font-family: 'Comic Sans MS',cursive; font-size: 16px; line-height: 23px;">x-4y<12; 3x+y__<__6; x__>__0. <span style="color: #0036ff; font-family: 'Comic Sans MS',cursive; font-size: 16px;">I put them all into slope intercept form and my results was a shaded in triangle. Does that seem right? I wasn't sure if it was because we didn't do any problems with three inequalities before.

=
** Posting: Hey Katie, for number 6 on the homework: <span style="color: #ff009d; font-family: 'Comic Sans MS',cursive;">x-4y<12; 3x+y__<__6; x__>__0, <span style="color: #1500ff; font-family: 'Comic Sans MS',cursive; font-weight: normal;">I put them into slope intercept form <span style="color: #ff009d; font-family: 'Comic Sans MS',cursive; font-weight: normal;">: <span style="color: #ff009d; font-family: 'Comic Sans MS',cursive;">y <-3x + 6, y > 1/4x -3, and x > 0. <span style="color: #0000ff; font-family: 'Comic Sans MS',cursive; font-weight: normal;"> Did you get the same slope intercept? I also ended up shading a triangle on the left of the graph. I think that that is correct because the answer must be where ever all equations meet. ** ====== Lerna Girginn 2/4/10 Response to Katie Brinskele

Your first approach was good, by changing the equations to slope-intercept form, so good job on that. Your second approach would be to graph the lines, which you did. After you have done that you can begin drawing the "teeth" of the lines to form a mouth. X - 4y 1/4 - 3. You should shade above the line for this one. 3x + y _< 6 becomes y _< -3x + 6. In this case the shade should be below the line. And finally, x _> 0 is shaded above the line. If you have followed these rules, than you should be in good shape. And I also have produced a shaded in triangle. * the _ _ are my greater than or equal to and my lesser than and equal to.

Name: Mara Schwartz Date: 2/ 4/ 10 Posting: Hey everyone, although we went over it in class, I am still having trouble writing the equation out for # 3 on the back of the worksheet we did on Wednesday. Is there any tricks to help find the correct equation? Gregory Russo 2/4/10

Hey. I was trying the other side of the worksheet that had the two sides of problems. On the back of the paper Number 1. ( In 2004 sales of athletic footwear were 3551 million more sales of sports clothing. Together, total sales for these was 25,953 million. What were the sales for each) I think i did the system wrong, is one of the systems x + 3551mil + y = 25,953 mil

<span style="color: #0036ff; font-family: 'Comic Sans MS',cursive;"> Name: ** Sammy Rosen ** <span style="color: #0036ff; font-family: 'Comic Sans MS',cursive;">Date: **2/5/10** Type of posting: ** 2 ** Posting: ** Hey everyone. I can't seem to remember which way to shade when shading on the graphing part on the homework. Is it that if its greater then to shade to the right and if it is less then to shade to the left? Thanks so much! **


 * Name: Drew Mann **
 * Date: 2/5/10 **
 * Type of posting: 2 **
 * Posting: On the homework last night for problem #4 when I shaded a certain area and took a coordinate from there it didn't fit in my equation. The two equation i got were y is greater than 3x+4 and y is less than -.5x+3. When i shaded in a put the coordinate i got a false statement when it is supposed to be true. **


 * Name: Francesca Pucciarelli **
 * Date: 2/5/10 **
 * Type of Posting: 3 **
 * Posting: Sammy, for the homework when the sign is greater than you shade above the line, and when the sign is less than you shade under the line. I hope this helped! **

Name: **Jake Waldron** Date: **<span style="color: #ff5900; font-family: 'Comic Sans MS',cursive; font-size: 16px; line-height: 23px;"> 2/5/10 ** Type of posting: **<span style="color: #800080; font-family: 'Comic Sans MS',cursive; font-size: 16px; line-height: 23px;"> 1 **
 * <span style="color: #800080; font-family: 'Comic Sans MS',cursive; font-size: 16px; line-height: 23px;"> I had a problem with the last question on the homework last night where there were 3 equations and I was not sure how to do it. **


 * <span style="color: #800080; font-family: 'Comic Sans MS',cursive; font-size: 16px; line-height: 23px;"> Name: Selma Zayer **
 * <span style="color: #800080; font-family: 'Comic Sans MS',cursive; font-size: 16px; line-height: 23px;"> Date: 2/5/10 **
 * <span style="color: #800080; font-family: 'Comic Sans MS',cursive; font-size: 16px; line-height: 23px;"> Type of posting: 1 **
 * <span style="color: #800080; font-family: 'Comic Sans MS',cursive; font-size: 16px; line-height: 23px;"> I did not understand how to do the homework. It was very difficult for me to solve for the x and y for the problems on the worksheet. I get how to solve the systems, but not that. **


 * <span style="color: #800080; font-family: 'Comic Sans MS',cursive; font-size: 16px; line-height: 23px;"> Name: Amanda Patalano **
 * <span style="color: #800080; font-family: 'Comic Sans MS',cursive; font-size: 16px; line-height: 23px;"> Date: 2/5/10 **
 * <span style="color: #800080; font-family: 'Comic Sans MS',cursive; font-size: 16px; line-height: 23px;"> Type of posting: 3 **
 * <span style="color: #800080; font-family: 'Comic Sans MS',cursive; font-size: 16px; line-height: 23px;"> Selma read the problem carefully and choose one thing for the x and the other thing you're left with for the y. **