ALGEBRA HELP! |
 Feb 21 2005, 04:04 PM
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#1
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Senior Member  Group: Member Posts: 82 Joined: Feb 2005 Member No: 97,973  |
geeenkie i hate algebra
could someone help me! heres the problem Solve the given formula for the variable shown in bold. State the rstrictions if any, for the formula obtained to be meaningful. 1. S = n/2(a+1);a HELP PLEASE! come on! help me! or at least tell me if you know how to do it or not! |
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Feb 25 2005, 12:01 PM
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#2
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Senior Member Group: Member Posts: 1,746 Joined: Oct 2004 Member No: 52,931 |
QUOTE Solve the given formula for the variable shown in bold. State the rstrictions if any, for the formula obtained to be meaningful. 1. S = n/2(a+1);a i'm assuming that the (a+1) is in the denominator along with the 2.. if i misinterpreted the problem, please correct me. Part One: Solving for 'a' really, this is quite simple, people. 1. Distribute the denominator: S = n/(2a+2) 2. Multiply both sides by the denominator (2a+2) S(2a+2) = n 3. Divide both sides by S. 2a+2 = n/S 4. Subtract 2 from both sides. 2a = (n/S) - 2 5. Divide both sides by 2. a = (n/2s) - 1 Thus... you solved for the variable 'a,' right? this doesn't involve calculus at all, does it? i'm very confused. anyway... Part Two: Restrictions Since 2S is the denominator on the right side and the denominator cannot be zero, the set of 'S' would be all real numbers except zero. S =/= 0 |
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Posts in this topic
Peppermiint_rose ALGEBRA HELP! Feb 21 2005, 04:04 PM
avalon* err don't double post please. kthx.
is n a va... Feb 21 2005, 04:48 PM nevernothere Half of n times (a + 1) or n over 2 times (a + 1)?... Feb 21 2005, 04:54 PM Baku this seems like precalc stuff haha i passed algebr... Feb 21 2005, 04:55 PM silver rain Hmm, is that the formula for the sum of numbers in... Feb 21 2005, 09:17 PM smilz2dasun all you gotta do is get a by itself by doing the o... Feb 22 2005, 01:02 AM
xcaitlinx S = n/2(a+1) [like someone mentioned above...multi... Feb 23 2005, 08:44 PM Peppermiint_rose its alegbra 1.....
also thanks ^^ for helping... Feb 22 2005, 05:00 PM wind&fire the asymtope is at a=-1 Feb 23 2005, 08:20 PM BOAmusics taking calculus AP
and look at 1. S = n/2(a+1);a
... Feb 23 2005, 08:27 PM tweeak yeeaaaaaah ive taken alg1 and am currently in alg2... Feb 23 2005, 08:30 PM Peppermiint_rose ok...i got my grade back..perplexism was right..th... Feb 28 2005, 04:13 PM tweeak topic closed Feb 28 2005, 06:04 PM |
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