See other Miscellaneous Articles
Title: Mathematics question
Source:
.
URL Source: http://.
Published: Mar 31, 2015
Author: .
Post Date: 2015-03-31 12:54:22 by Artisan
Keywords: None
Views: 714
Comments: 41
Can anyone tell me the formula I would use to solve this question. If 2001.51 = 70% of X, what is X? I know what X is, (2859.30) but if I didn't, and only had the 2001.51 number, what is the formula I would use to determine X? And what area of math is this referred to as, (since I obviously need a course on it ;-) Thanks.
Post Comment Private Reply Ignore Thread
Top • Page Up • Full Thread • Page Down • Bottom/Latest
Comments (1-1) not displayed.
.
.
.
#2. To: Esso (#1)
Correct.
“The most dangerous man to any government is the man who is able to think things out... without regard to the prevailing superstitions and taboos. Almost inevitably he comes to the conclusion that the government he lives under is dishonest, insane, intolerable.” ~ H. L. Mencken
Damn, I knew how to arrive at the 70% figure 2859.30 x .70) but had not known how to invert it. Thanks for the tip. Simple algebra? Damn, I took that in tenth grade. I guess its a good thing I don't need to use it. I'm actually very good with numbers in other ways such as calculating percentages and making change in my head etc. Probably because as kids we were forbidden from using calculators. Those were never allowed in school. "Even to the death fight for truth, and the LORD your God will battle for you". Sirach 4:28
I know what X is, (2859.30) but if I didn't, and only had the 2001.51 number, what is the formula I would use to determine X? And what area of math is this referred to as, (since I obviously need a course on it ;-) Thanks. .7X = 2001.51 X = 2001.51/.7 X = 2859.30 It's called Algebra Thanks. I actually passed algebra my sophmore year but did not like it.
"Even to the death fight for truth, and the LORD your God will battle for you". Sirach 4:28
That's a 6th grade math problem.
Thank you for pointing that out, Abraham. What would we do without you? Are any of you seriously mathematical? If so I have a question that should be simple, but none of my local geniuses can answer it.
Shoot it here.
It may be but would you have known the formula if it hadn't been for fformerlurker and esso? ;-) I got one for you. If there are 50 jews loaning money to Tony, and tony is paying usurious 45% interest total, but 13 of the jews are charging him only 28%, what are the other jews charging him? (Thanks in advance, please give the algebra equation in order for your reply to be proper.) "Even to the death fight for truth, and the LORD your God will battle for you". Sirach 4:28
P = principal 50*P = principal from 50 jews Total money in interest = 50 *.45 *P = 22.5*P Money Paid to 13 Jews = 13 * P *.28 = 3.64 *P So money which must be paid to other 37 jews = (22.5 - 3.64)P = 18.86P So the interest rate charged by the other 37 jews is = 18.86P/37P = 50.97% So that's your answer, your anti-Semitic scenario, notwithstanding.
I have had math through advanced calculus and advanced partial differential equations, but I'll be damned if I can remember 90% of it anymore.
Thanks Abe, you appear to be pretty good at algebra. Fred, can you vouch for this answer? "Even to the death fight for truth, and the LORD your God will battle for you". Sirach 4:28
Goody! How do you calculate the points at which the hour and minute hands of a clock are in the same exact position (or exactly opposite) other than 12:00? Mind you, the exact times are of secondary interest at best. I mainly want to know how they'd be arrived at, simply because I'm an endlessly curious person (if a total mathematical failure).
Yes, 50.97% is correct. I used a different approach. I'm rusty too.
Can you spell out your formula please? This is a learning session for me & it my be helpful in the future, thanks "Even to the death fight for truth, and the LORD your God will battle for you". Sirach 4:28
What do you mean by the term "anti-Semitic", Abe?
Esso nailed the process. Practice online here www.ixl.com/math/algebra-1 have some fun while learning what you've forgotten. “The most dangerous man to any government is the man who is able to think things out... without regard to the prevailing superstitions and taboos. Almost inevitably he comes to the conclusion that the government he lives under is dishonest, insane, intolerable.” ~ H. L. Mencken
I don't know how to calculate it. The big hand passes the little hand once an hour, and is opposite it once an hour. 2 times an hour for whatever length of time you want. I don't know why you eliminate 12:00 - same thing. If this is a trick question and you make me look like a retard, I'm going to knock you over the head with my mouse.
Seems like it would be 120 instances of the same or opposite positions.
“The most dangerous man to any government is the man who is able to think things out... without regard to the prevailing superstitions and taboos. Almost inevitably he comes to the conclusion that the government he lives under is dishonest, insane, intolerable.” ~ H. L. Mencken
Thanks for the link. The question in #9 was quite different than the original which esso answered. Since fred said he used a different formula than abe, id like to see it. "Even to the death fight for truth, and the LORD your God will battle for you". Sirach 4:28
Your second example of interest rates. Let X=Interest rate charged by 37 others...the unknown. 13 of 50 charge .28 and 37 of 50 charge (X) then the total rate = .45 or 45% 13/50*(.28) + 37/50*(X) = .45 .26*(.28) + .74*(X) = .45 .0728 + .74X = .45 Subtract .0728 from both sides of the equation. Solve for X. .74X = .3772 Now divide bofe sides by .74. X = .3772/.74 = .5097... X = 50.97%
You're in good company in answering "everything else but" :)
Well, I don't know what you mean by that.
I have no clue either. Is 120 times correct, is all I wanna know. :-) “The most dangerous man to any government is the man who is able to think things out... without regard to the prevailing superstitions and taboos. Almost inevitably he comes to the conclusion that the government he lives under is dishonest, insane, intolerable.” ~ H. L. Mencken
Have fun here: www.indiabix.com/aptitude/clock/discussion-650 They discuss only when the hands are in a straight line/opposite each other. 22 times in a 24 hour period with discussion. Edit: between 5 and 7 O'clock they're only in a straight line at 6. I see that now...with help.
You can figure out the exact times the hands will be together and opposite, but it is a bit complicated: Say starting at 12, you wanted to know the next time the hands would be together after 1. The hour hand moves 1/12 as fast as the minute hand. So the minute hand moves all the way around, but the hour hand moves only to one. When the minute hand gets to one the hour hand will be at 1 + 1/12. Following this progression gives you the time when the two hands converge: It is the infinite series 1 +1/12 +(1/12)^2 + 1/12^3....... However this infinite series converges to definite value of 1 +1/(1 - 1/12). That is the next time the two hands will be together after 12. Using that point and the same method of calculation, you can follow the times around. By simple geometry, it works the same way for when the hands are opposite. You could start with 12;30 and work your way around the clock.
Great link - thanks.
“The most dangerous man to any government is the man who is able to think things out... without regard to the prevailing superstitions and taboos. Almost inevitably he comes to the conclusion that the government he lives under is dishonest, insane, intolerable.” ~ H. L. Mencken
Have amnesia, NeoWhiffed? HULLO. Come on, Artisan. You're a Christian, right? Yeah, my memory's failing me a tad. What is it exactly? Everybody throwsthe term around, nobody's willing to define it.
Mind you, the exact times are of secondary interest at best. I mainly want to know how they'd be arrived at, simply because I'm an endlessly curious person (if a total mathematical failure). I'm sure that you could work this to the nanosecond. How close do you want it? From Noon, the next time that the two hands are equally placed are 65 and a fraction of a minute later, again, pending to what significant figures you want it calculated to. Since this is simply a curiosity thing primarily if not exclusively, that extra five minutes that the minute hand has to move every hour to get past exactly 65 minutes later, is approximately 25 seconds. 5/60 of the next 5 minutes. So every 65 minutes and 25 seconds the two hands will be equal. Simple linear math entails that they're opposite exactly half-way prior to or after (however you'd like to view it since it's identical) the next (prior to) or last (after), which means that every 65 minutes and 25 seconds, exactly halfway out of phase with when they're equally aligned, they are opposite. This also entails that this occurs 32 minutes and 43 seconds after and before the next identical alignment. Another way of looking at it is that in one 12 hour period they align, or are opposite, 11 times, either one. 12 hours = 720 minutes. 720 minutes/11 = 65.45 .45 minutes = .45 x 60 = 27 seconds. That extra 2 seconds or so, is from the additional time of movement that the hour hand moves in the five minutes after the minute hand crosses the 1 hour mark. So in essence, the first time, from Noon, that the hands are in perfect alignment is 65 minutes and 27 seconds later. Then 65 minutes and 27 seconds after that. So on and so forth. For oppositely aligned, it's the same thing except that it starts approximately 32 minutes and 43 seconds later. Make sense? Is that what you wanted? Time is linear.
Interesting. What I'm looking for is probably calculus or something, but I'd like to see it someday. Why isn't they way you got it absolutely precise? Looks like nice exact small numbers to me. I guess it is a simple matter of 11 divisions of 12 hours as you say, without even any fractions of a section. Wow, Looks like Abraham's got it neatly too -- thanks to both of you.
Well time is linear, I'm not sure how Calculus would be applied unless you are relating it to something else. You cannot take something that's linear and transform it into something that's nonlinear. If it's linear then it's linear. People have done that here in the forum on other issues too, they attempt to turn something that's boolean into something that's continuous, or more often visa versa. We cannot do that.
BTW, I should probably caveat that, time as we understand it and use it, and as you are referring to it, is linear. I'll leave it at that.
Yes I am Catholic. (And against usury) I was just teasing Abraham because he complained the posters at 4um talk about jews all day & see a boogeyman jew under every bush. ;-) "Even to the death fight for truth, and the LORD your God will battle for you". Sirach 4:28
Obviously time is linear. What I mean is there has to be a formula made up of numbers and symbols for this, but I wouldn't think of taking up any more space on it here with the talents you folks have for forensics. Again, thanks.
In other words, he sees an "anti-Semite" under every bed, to borrow a cliché deployed against patriots during the so-called Red Scare. (In which Jew reds were in fact ripping everything to shreds, just as they are now.) In the decade that followed, the sizzling 60s, the Jews trained their goyish dupes to answer criticisms of leftist garbage "Yeah, it's a COMMUNIST PLOT, hyuk hyuk!" Of course that's basically what it was -- minor detail. Is anybody going to enlighten us as to what "anti-Semitism" is, and why it should be more noteworthy than anti-celticism, anti-Zoroastrianism or anti- Fletcherism?
I'd be more concerned about your talents for mathematics than my talents for forensics. I had to explain it to you twice, yet, if you know that time is linear I have no idea what kind of "formula made up of numbers and symbols" that you're talking about. Anyone that understands linear math can see the folly of such a request. I won't bother to elaborate on that given your seeming arrogance regarding it. HINT: Might be best to simply quit commenting and asking. You know the age old adage, better to keep one's mouth shut and be thought of as a fool than to open it and remove any doubt. I tried to help you and answer your question, and from what I can see I did a better job than anyone, and then you condescend. Apparently my time teaching high level collegiate math was entirely wasted.
I wasn't being arrogant or condescending. I was trying to discreetly close out a subject that had run its course. My talents for mathematics? I'm pre- numerate :-s
LOL Well, then please simply understand that what you're asking for is not possible. It would be kind of like asking for classical music to be written in English rather than with notes. Linear math, derived from the root word "line"(ar), is about as simple as it gets. Calculus with its "symbols" and whatnot is more for applications with very much non-linear math. Some of it can even get purely theoretical, such as complex numbers and the like. That can be semi-mind-blowing and it's certainly not practical for daily application.
Shikes... its very seldom that I feel stupid but your answer accomplished that. Very interesting, thanks!
"Even to the death fight for truth, and the LORD your God will battle for you". Sirach 4:28
#3. To: Esso, lod (#1)
#4. To: Artisan (#0)
If 2001.51 = 70% of X, what is X?
"After tomorrow those SOB's will never embarrass me again. That’s not a threat. That’s a promise.” – LBJ to his mistress Madeleine Brown on the eve of JFK assassination
#5. To: FormerLurker (#4)
#6. To: Artisan (#0)
#7. To: All (#6)
#8. To: NeoconsNailed (#7)
If so I have a question that should be simple, but none of my local geniuses can answer it.
#9. To: Abraham (#6)
#10. To: Artisan (#9)
#11. To: NeoconsNailed (#7)
#12. To: Abraham, fred mertz (#10)
Shoot it here.
#13. To: Fred Mertz (#8)
#14. To: Artisan, Abraham (#12)
#15. To: Fred Mertz (#14)
correct. I used a different approach. I'm rusty too.
#16. To: Abraham (#10)
#17. To: Artisan (#15)
#18. To: NeoconsNailed (#13)
(Edited)
#19. To: NeoconsNailed (#13)
#20. To: Lod (#17)
#21. To: Artisan (#20)
#22. To: Fred Mertz, Lod (#18)
#23. To: NeoconsNailed. Lod (#22)
#24. To: Fred Mertz (#23)
#25. To: Lod (#24)
(Edited)
#26. To: NeoconsNailed (#13)
#27. To: Fred Mertz (#25)
#28. To: NeoconsNailed, Abraham (#16)
What do you mean by the term "anti-Semitic", Abe?
#29. To: Artisan (#9)
I got one for you. If there are 50 jews loaning money to Tony, and tony is paying usurious 45% interest total, but 13 of the jews are charging him only 28%, what are the other jews charging him?
#30. To: Liberator (#28)
(Edited)
#31. To: NeoconsNailed, All (#13)
(Edited)
Goody! How do you calculate the points at which the hour and minute hands of a clock are in the same exact position (or exactly opposite) other than 12:00?
#32. To: Katniss (#31)
(Edited)
#33. To: NeoconsNailed (#32)
#34. To: NeoconsNailed (#32)
#35. To: Liberator (#29)
Come on, Artisan. You're a Christian, right?
#36. To: Katniss (#33)
#37. To: Artisan (#35)
#38. To: NeoconsNailed (#36)
Obviously time is linear. What I mean is there has to be a formula made up of numbers and symbols for this, but I wouldn't think of taking up any more space on it here with the talents you folks have for forensics. Again, thanks.
#39. To: Katniss (#38)
(Edited)
#40. To: NeoconsNailed (#39)
#41. To: Fred Mertz (#21)
Top • Page Up • Full Thread • Page Down • Bottom/Latest