Love2Smile Posted August 30, 2011 Share Posted August 30, 2011 6(n+8) That is the problem. It says to evaluate each expression. Don't you need to know what "n" is to evaluate?? Thanks! Quote Link to comment Share on other sites More sharing options...
mschickie Posted August 30, 2011 Share Posted August 30, 2011 6n + 48 Quote Link to comment Share on other sites More sharing options...
Love2Smile Posted August 30, 2011 Author Share Posted August 30, 2011 Thanks! Hitting hand against head! What about 29y-15 (x+n) divided by y ??? Quote Link to comment Share on other sites More sharing options...
Jamauk Posted August 30, 2011 Share Posted August 30, 2011 6n + 48 That's what I was going to say, but, like the OP, I was trying to make it harder than it was :001_smile: Quote Link to comment Share on other sites More sharing options...
Love2Smile Posted August 30, 2011 Author Share Posted August 30, 2011 how bout the other two?? My daughter started public school and my mind is slipping!!! Quote Link to comment Share on other sites More sharing options...
Jamauk Posted August 30, 2011 Share Posted August 30, 2011 The other two have me stumped :D My oldest is only 8 and we're just doing 3rd grade math here! I had to dig pretty deep to come up with that first answer (before it was posted) LOL!! Quote Link to comment Share on other sites More sharing options...
justasque Posted August 30, 2011 Share Posted August 30, 2011 Thanks! Hitting hand against head! What about 29y-15 (x+n) divided by y ??? 29Y-15 is already in simplest form. (x+n) / y = x/y + n/y Do they give you values for n and y? Sometimes that's at the top of a bunch of problems so it's easy to miss. Quote Link to comment Share on other sites More sharing options...
Love2Smile Posted August 30, 2011 Author Share Posted August 30, 2011 29Y-15 is already in simplest form. (x+n) / y = x/y + n/y Do they give you values for n and y? Sometimes that's at the top of a bunch of problems so it's easy to miss. No they don't give us values for the letters, that's the problem. Thanks! Quote Link to comment Share on other sites More sharing options...
Love2Smile Posted August 30, 2011 Author Share Posted August 30, 2011 Thank you! Quote Link to comment Share on other sites More sharing options...
JudyJudyJudy Posted August 31, 2011 Share Posted August 31, 2011 Thanks! Hitting hand against head! What about 29y-15 (x+n) divided by y ??? What are the instructions? Might they want her to factor in the first one? What grade is this? Quote Link to comment Share on other sites More sharing options...
Love2Smile Posted August 31, 2011 Author Share Posted August 31, 2011 What are the instructions? Might they want her to factor in the first one? What grade is this? The instructions were to "evaluate each expression". It's for 8th grade math. She went back to public school. Quote Link to comment Share on other sites More sharing options...
Jay3fer Posted August 31, 2011 Share Posted August 31, 2011 My daughter started public school and my mind is slipping!!! my least favourite thing about kids in school is that they bring the problems home to me. i have NO problem teaching math; i love math and can DO math, but when they bring home a text or a worksheet, it's totally out of context and you have no idea what the teacher has done to teach them - or, sometimes, how she has messed up teaching it. And the sad thing is, parents often don't like to complain about these issues at home because WE feel like the dumb ones. if your kid has no clue how the teacher wants them to do the problems, THAT is the problem, not your math skills. sorry to hijack with a rant about the schools (not just public, unfortunately)!!! :lol: Quote Link to comment Share on other sites More sharing options...
Dana Posted August 31, 2011 Share Posted August 31, 2011 The instructions were to "evaluate each expression". It's for 8th grade math. She went back to public school. If the instructions are to "evaluate", you have to be given values to substitute and to evaluate with. Otherwise, the directions should be "simplify" (to clear parentheses & combine like terms). I so would not be able to handle the math that would come home with my son were he in public school (or private). :glare: (Of course, I am yelling at the math text I have to teach from at the cc this semester pretty regularly as well. Sigh. If a number line has only one arrow, it's a ray not a number line. A line needs two arrows (otherwise it's a line segment or a ray as our text has it). Grump, grump, grump.) Quote Link to comment Share on other sites More sharing options...
GingerPoppy Posted August 31, 2011 Share Posted August 31, 2011 :iagree: totally with the above. It *really* needs to say simplify, not evaluate. Or, maybe the page was out of context, and there were values for the variables somewhere (maybe on the board at school??) Quote Link to comment Share on other sites More sharing options...
kiana Posted August 31, 2011 Share Posted August 31, 2011 If the instructions are to "evaluate", you have to be given values to substitute and to evaluate with. Otherwise, the directions should be "simplify" (to clear parentheses & combine like terms). Yep. That being said, given it's an out-of-context worksheet, I'd make my best guess that the teacher really meant simplify if I couldn't find values anywhere :P Quote Link to comment Share on other sites More sharing options...
Love2Smile Posted August 31, 2011 Author Share Posted August 31, 2011 thanks for your help. We simpliied them Quote Link to comment Share on other sites More sharing options...
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