Another 3 math questions

[CYYYFYYY]

<p>Last time you guys were great... How about these.....</p><p>&nbsp;</p><p>Solve the solution by substituion</p><p>x+y=12</p><p>y=2x</p><p>&nbsp;</p><p>Solve by graphing </p><p>X+y=3</p><p>x+y=-1</p><p>I say this one cannot be solved by graphing because the points never meet</p><p>&nbsp;</p><p>The sum of two numbers is 110. The second is 8 more than 5 times the first. What are the two numbers.</p><p>I can figure this one out but I need to show the work.</p><p>&nbsp;</p><p>Thanks!</p>

[sailor]

<p><font size="2">third is easy:</font></p><p><font size="2">make two equations:</font></p><p><font size="2">5x + 8 = y</font></p><p><font size="2">x + y = 110</font></p><p><font size="2">isolate y in 2nd</font></p><p><font size="2">y = 110 - x</font></p><p><font size="2">sub this for y in the original</font></p><p><font size="2">5x + y = 110 - x</font></p><p><font size="2">solve for x</font></p><p><font size="2">6x = 102</font></p><p><font size="2">x = 17</font></p><p><font size="2">plug this into the original</font></p><p><font size="2">(17 * 5) + 8 = y</font></p><p><font size="2">93 = y</font></p><p><font size="2">&nbsp;</font></p><p><font size="2">so, x = 17, y = 93&nbsp;</font></p>

[sailor]

<strong>CYYYFYYY</strong> wrote:<br /><br /><p>Solve the solution by substituion</p><p>x+y=12</p><p>y=2x</p><p>&nbsp;</p><br /><p>&nbsp;<font size="2">this one is cake, too.</font></p><p>x + 2x = 12</p><p>3x = 12</p><p>x = 4&nbsp;</p><p>then:</p><p>y = 2x</p><p>y = 2*4</p><p>y = 8</p><p>&nbsp;</p>

[CYYYFYYY]

<p>I was pretty sure for the third one </p><p>y=20.4</p><p>x=89.6</p><p>&nbsp;</p>

[StillWill]

This can't be right, X = 5 x Y +8

[nate1000]

<strong>CYYYFYYY</strong> wrote:<br /><p>Solve by graphing </p><p>X+y=3</p><p>x+y=-1</p><p>Draw two lines both with a slope of 1. First line y-intercept is 3 and x-intercept is also 3. </p><p>Second line y-intercept is -1 ans x intercept is 1. Lines intersect at (2,1)</p>

<span class=post_edited>This message was edited by nate1000 on 3-2-07 @ 10:19 AM</span>

[JPMNICK]

sailors work and answers are correct for 1&amp;3

[nate1000]

<strong>StillWill</strong> wrote:<br />This can't be right, X = 5 x Y +8 <p>No, Y=5x+8</p>

[nate1000]

<span class="name"><font size="1">CYYYFYYY, </font></span><span class="name"><font size="1">If you don't mind me asking- what grade are you in? </font></span>

<span class=post_edited>This message was edited by nate1000 on 3-2-07 @ 10:26 AM</span>

[sailor]

<strong>nate1000</strong> wrote:<br /><strong>StillWill</strong> wrote:<br />This can't be right, X = 5 x Y +8 <p>No, Y=5x+8</p><p>&nbsp;<font size="2">either way, they're the same thing.&nbsp; picking what's x and what's y is arbitrary.&nbsp; you could have called them t and a or d and s or what-not. </font></p>

[sailor]

<strong>nate1000</strong> wrote:<br /><span class="name"><font size="1">CYYYFYYY, </font></span><span class="name"><font size="1">If you don't mind me asking- what grade are you in? </font></span> <span class="post_edited">This message was edited by nate1000 on 3-2-07 @ 10:26 AM</span><p>&nbsp;<font size="2">i'm willing to bet he wasn't the minimum of 16 when he signed up here.&nbsp; </font><img src="http://www.ronfez.net/messageboard/tiny_mce/plugins/emotions/images/huh.gif" border="0" /></p>

[nate1000]

<strong>sailor</strong> wrote:<br /><strong>nate1000</strong> wrote:<br /><strong>StillWill</strong> wrote:<br />This can't be right, X = 5 x Y +8 <p>No, Y=5x+8</p><p>&nbsp;<font size="2">either way, they're the same thing.&nbsp; picking what's x and what's y is arbitrary.&nbsp; you could have called them t and a or d and s or what-not. </font></p><p>You're right- I was reading X= 5(Y+8)</p>

[nate1000]

<strong>sailor</strong> wrote:<br /><strong>nate1000</strong> wrote:<br /><span class="name"><font size="1">CYYYFYYY, </font></span><span class="name"><font size="1">If you don't mind me asking- what grade are you in? </font></span><span class="post_edited">This message was edited by nate1000 on 3-2-07 @ 10:26 AM</span> <p>&nbsp;<font size="2">i'm willing to bet he wasn't the minimum of 16 when he signed up here.&nbsp; </font><img src="http://www.ronfez.net/messageboard/tiny_mce/plugins/emotions/images/huh.gif" border="0" width="20" height="20" /></p><p>That is what I'm hoping. Otherwise our schools are fucked.</p>

[reillyluck]

i like to color.

[sailor]

<strong>nate1000</strong> wrote:<br /><strong>sailor</strong> wrote:<br /><strong>nate1000</strong> wrote:<br /><span class="name"><font size="1">CYYYFYYY, </font></span><span class="name"><font size="1">If you don't mind me asking- what grade are you in? </font></span><span class="post_edited">This message was edited by nate1000 on 3-2-07 @ 10:26 AM</span> <p> <font size="2">i'm willing to bet he wasn't the minimum of 16 when he signed up here. </font><img src="http://www.ronfez.net/messageboard/tiny_mce/plugins/emotions/images/huh.gif" border="0" width="20" height="20" /></p><p>That is what I'm hoping. Otherwise our schools are fucked.</p><p>&nbsp;<font size="2">well, he would be in grad-school by now.&nbsp; :) </font></p>

[CYYYFYYY]

The CYYYFYYY's grade level and age remains a mystery.

[cupcakelove]

<strong>nate1000</strong> wrote:<br /><strong>CYYYFYYY</strong> wrote:<br /><p>Solve by graphing </p><p>X+y=3</p><p>x+y=-1</p><p>Draw two lines both with a slope of 1. First line y-intercept is 3 and x-intercept is also 3. </p><p>Second line y-intercept is -1 ans x intercept is 1. Lines intersect at (2,1)</p> <span class="post_edited">This message was edited by nate1000 on 3-2-07 @ 10:19 AM</span><p>Both lines have the same slope of -1, which means they're parallel, and will never intersect.&nbsp; CY are you sure you wrote the correct equations down?</p>

[sailor]

<strong>CYYYFYYY</strong> wrote:<br />The CYYYFYYY's grade level and age remains a mystery.<p>&nbsp;<font size="2">older than 5!<br /></font></p>

[CYYYFYYY]

<font size="2"></font><font size="2"><p>Whoops I had the same answer for number 3. The numbers I wrote were for a different answer. As for number 2; I checked and I wrote it properly. I also thought the lines never intersected. So I am not doing so poorly. As for number 1. That one I do have issues with so thanks allot for the help.</p></font>

[Judge Smails]

<p><img src="http://i65.photobucket.com/albums/h204/snozberry_/test1.jpg" border="0" width="446" height="206" /></p><p><img src="http://i65.photobucket.com/albums/h204/snozberry_/test3.jpg" border="0" width="604" height="164" /></p><p>&nbsp;</p>

[nate1000]

<strong>cupcakelove</strong> wrote:<br /><strong>nate1000</strong> wrote:<br /><strong>CYYYFYYY</strong> wrote:<br /><p>Solve by graphing </p><p>X+y=3</p><p>x+y=-1</p><p>Draw two lines both with a slope of 1. First line y-intercept is 3 and x-intercept is also 3. </p><p>Second line y-intercept is -1 ans x intercept is 1. Lines intersect at (2,1)</p><span class="post_edited">This message was edited by nate1000 on 3-2-07 @ 10:19 AM</span> <p>Both lines have the same slope of -1, which means they're parallel, and will never intersect.&nbsp; CY are you sure you wrote the correct equations down?</p><p>Yep- you're right. Stupid math. </p><p>Parallel lines with slope of -1 and y intercepts of 3 and -1</p>

[Mike Teacher]

I weep for the future.

[mendyweiss]

<img src="http://static.flickr.com/94/245533718_d44d915a62.jpg" border="0" width="314" height="500" />HAHAHAHAHAHAHAH !!!!!!!!!!

[CYYYFYYY]

<p>How about one more for the road.....</p><p>Solve by substitution</p><p>x+5y=-16</p><p>4x+4y=0</p>

[Donnie2Buck$]

<p>x = 4</p><p>y = -4&nbsp;</p>

[feralBoy]

<strong>CYYYFYYY</strong> wrote:<br /><p>How about one more for the road.....</p><p>Solve by substitution</p><p>x+5y=-16</p><p>4x+4y=0</p><p>Come on man, if you can do one of those equations, you should be able to do all of them.&nbsp; Are you planning on learning any time soon?</p>

[CYYYFYYY]

Oh I know the answer my friend but I need to show the work. That is what gets you every time

[CYYYFYYY]

And nope not really planning on learning anytime soon. So sad.

[CYYYFYYY]

Please please someone show me the work

[Ritalin]

<strong>CYYYFYYY</strong> wrote:<br />Please please someone show me the work<p><img src="http://www.kickasscamera.com/construction/ground7.jpg" border="0" width="320" height="240" />&nbsp;</p>

[CYYYFYYY]

You knwo what I find humoroue. Everyone thinks I am a 16 year old kid but I am much older and doing most of the work for a friend. Excuse me if I forgot some of this stupid math. Lets see how much you recall in 10 years after you are done with school. I ask 3 or 4 questions, that means I am doing about 26 questions, excuse me if I do not recall everything.

[CYYYFYYY]

Well, I am done. Thanks so much

[sailor]

<strong>CYYYFYYY</strong> wrote:<br />You knwo what I find humoroue. Everyone thinks I am a 16 year old kid but I am much older and doing most of the work for a friend. Excuse me if I forgot some of this stupid math. Lets see how much you recall in 10 years after you are done with school. I ask 3 or 4 questions, that means I am doing about 26 questions, excuse me if I do not recall everything.<p>&nbsp;<font size="2">i graduated hs 18 years ago.<br /></font></p>

[sailor]

<strong>CYYYFYYY</strong> wrote:<br />Well, I am done. Thanks so much<p>&nbsp;<font size="2">you're welcome.<br /></font></p>