Math Answers for SAT- Let's Compile 'Em

<p>s=number of students, m = number of microscopes
If the teacher assign one microscope to each student, they will still be six scope short. If the the number of microscope is doubled, there're 6 microscopes left over. How many students are there?</p>

<p>I did it this way:
m = s - 6
2m = s + 6
2(s - 6) = s + 6
2s - 12 = s + 6
s = 18</p>

<p>If the teacher assigns each student one microscope, then there's 6 students without microscopes. If the teacher doubles the amount of microscopes and gives each student one microscope,then there's 6 left over.</p>

<p>You can write the equation: s-m=6
And 2m=s+6
plugging s=6+m into the second equation:
2m=6+m+6
So m=12
s=18
If there's 12 microscopes, then there's 6 people left over without microscopes
The question was asking for the number of students, right guys?</p>

<p>oh it's 6 microscope short at first?</p>

<p>godamit wtf i never saw that</p>

<p>okay, number #18 on the multiple choice, where it asked how much greater is (i forget the equation but it had x in it) than x.<br>
it had answer choices like
5, 10, x+5, x+10 or something along those lines
what was the answer?</p>

<p>does anybody remember this question?</p>

<p>i think the answer was 10...my numbers were 8 and 18. it was either 10..or x+10...wouldn't they be the same thing? whichever it was, i think i just got an even 10, nothing more with an X in the answer.</p>

<p>Hmm, I don't really know if this is what the question asked but I remember something like how much greater than x is 2(x+5). I think I got x+10</p>

<p>sounds good to me.</p>

<p>What was the answer to the QC that asked whether m/20 or 20% was greater? I put 20% was greater because in fraction form 20% of m= m/5 which is always greater than m/20 unless m is negative.</p>

<p>Wow you all remember questions from 8 days ago? Lol
I have forgotten them by now.</p>

<p>I have the answers compiled in another thread somewhere. You could search for it and find the answer.</p>

<p>Oh crap. I forgot about negative numbers. Meh.</p>

<p>I think that question said m is greater than 0 but I'm not sure.</p>

<p>Hey ppl. I just remember a question from the last math section with 10 MC questions. Hope some of you would still remember and help me out. It was one with the inequalities: I forgot the left and right hand members of the equation, but in the middle there was (1/2x), I still remember. Does this ring a bell to anyone? The choices were .1, .2, .3, .4, and .5 (I think!) It was asking for the value of x that would satisfy the inequality (too bad i could not fully remember it though). I still remember putting 0.3. Anyone agrees if they remember? Thanks a lot
Also, BTW, do you think a 55 on math this adminstration would yield a mean result: 710 or pretty fair:720-730?</p>

<p>Does anyone remember that question that I have posted?</p>

<p>Hey ppl. Two questions: 1.) answer that question i posted if you can please? and 2) I just notice something. on the gridin section, where the answer was 120, I heard ppl got a problem with isosceles triangle, but i dont recall that. I think I got one with radical x minus 3 equal 8. what is x-1? Anyway, it is still 120.</p>

<p>Yes, 55 is definetly above 700. I think I remember putting .3 too!! But I don't quite remember the question.... I'll think about it tonite and post if I remember it.</p>

<p>Hey Aerospacegirl, was there a grid in about the radical x minus 8 equal 11. It ask for the value of x-1? I seriously dont remember the isosceles triangle.</p>

<p>That radical x problem was in one of the non-experimental multiple choice math sections.</p>

<p>Yes, I think there might have been a rad x minus 8 problem.... and I think I remember an isoceles triangle, but I think there was more than one shape in the problem...... weird...... hope I'm not getting this confused with my sis's geometry homework...... I really don't think I am. Yes, I think I remember an isoceles triangle with more than one triangle, with either that or a square in the same problem also.</p>

<p>There is a lot of talk about triangles on the experimental section on this thread...... :<a href="http://talk.collegeconfidential.com/showthread.php?t=13172&page=4&pp=20%5B/url%5D"&gt;http://talk.collegeconfidential.com/showthread.php?t=13172&page=4&pp=20&lt;/a&gt;&lt;/p>