<p>No you're probably right unfortunately. Does anyone know any helpful programs for the 83 though? I don't think I can access them online because I have a Mac. I also hear that they can do equations?</p>
<p>hmm what do you mean by equations? like an equation solver?</p>
<p>yea, thats what i hear, and my math teacher said it was true, but of course she won't tell me how to do it</p>
<p>haha, if you're referring to what i think you're referring to, try going to the MATH menu and press zero (or scroll to the bottom, whichever). set your equation equal to zero and enter it onto the screen. press the down button and it'll take you to a different screen where you'll see X=__. choose a number for this, preferably zero. then press alpha, = and voila! it'll give you the answer closest to zero. if there's more than one root, enter a different number as your initial guess to be taken to the solution closer to that. </p>
<p>did your 83 come with a handbook? you could always rebel with that. rebelling with a graphing calculator, how scandalous....</p>
<p>This sounds liek it will work! But I am ahving trouble right now...Let me tell you what I am doing: I go to math, go to solver, press enter, then I get "eqn: 0= " and I don't know what to do with that!</p>
<p>Well, lets say your equation is 8x= sin45, set that equal to zero (with paper and pencil, I mean) so its 8x-sin45= 0. plug that into eqn 0= so that itll appear like: </p>
<p>Eqn 0=8x-sin45</p>
<p>Brilliant! Thanks for your help!</p>
<p>david there is a program for it on ticalc.org Search the archives. Go to programs, math then do Ctrl F and type in factor.</p>
<p>I also wrote some simple programs that might help you. Includes:
Quadratic formula
Arithmetic, Geometric Series
Midpoint formula
Distance formula
Triangle solver (using trig but probably useless for the SAT I)
Area of a coordinate triangle.</p>
<p>For solving multi-variable equations, use matrices. For solving a one variable equation you can also set it to 0 then graph it. The answer is where y=0.</p>
<p>Does anyone know of there is a place with the program for factors for calc casio cfx9850 ?</p>
<p>The Acme Plumbing Company will send a team of 3 plumbers to work on a certain job. The company has 4 experienced plumbers and 4 trainees. If a team consts of 1 experienced plumber and 2 trainees, how many different such teams are possible?</p>
<p>I HATE THESE COMBINATION & PERMUTATION PROBLEMS!!</p>
<p>What I did was 4<em>4</em>3, so I got 48 for the answer. However the answer is 28; can anyone explain why?</p>
<p>Don't fret over the probabilities' problems. If you shave some time off the other problems, you should pplenty of time to write out ALL the scenarios. The problems on the SAT rarely exceed an acceptable number of possible options. If you practice writing out the various combinations, it will become second nature and you'll do it as fast as using a calculator. If all fails, just use logic! :)</p>
<p>In this case, assign a letter to the experienced plumber (A, B, C, and D) and a number to the trainees (1,2,3 and 4). The letter is not a challenge here as the solution calles for 1 experrienced plumber per team. </p>
<p>For the trainees, just check many different teams of two trainees can be made out of four. That should take only a few seconds to write 1-2 1-3 1-4, 2-3, 2-4, et cetera. Remember that 2-3 and 3-2 are the same combination of trainees. </p>
<p>From here, it should pretty simple to find the correct answer -which may not be the same as your "proposed" answer, as long as you remember to account for the 4 experience plumbers.</p>
<p>The answer isn't 28. There's 1-2, 1-3, 1-4, 2-3, 2-4, 3-4 and multiply that by 4 and you get 24.</p>
<p>What I wanted to know is how can you figure that out algebraically. I remember learning about something where you multiply like the amt of possibilities like 4x3x2 or something.</p>
<p>I'm sure the answer is 24. (4nCr1 * 4nCr2 = 4*6 = 24)</p>
<p>chochocho: what you did is 4nPr1 * 4nPr2 = 4*12 = 48
If the condition included the distinction between two trainees in a team (ex) 2nd best, 3rd best) it would be permutation
But since two trainees selected are treated same, it is combination.</p>
<hr>
<p>Interesting about calculators...
I just use it(83+) as arithmetic checker.
Your brain works faster than you punching buttons; you make the possibility of mistakes to zero by confirming answers at the end.</p>
<p>Hey ashermn, I'd be interested in those programs those are exactly the ones I was looking for. Unfortunately, I donlt think I can transfer the programs from the wbesite to my calculator because I have a Mac. I love my Mac, but right now, not so much</p>
<p>East soldier wat is that 4nCr1 that you mentioned?</p>
<p>Ohh, I meant 24 haha. </p>
<p>dmitriyr, nCr is combination and nPr is permutation. It can be found (TI-83) under Math->Prb</p>
<p>Eh, sorry guys, I have so many questions.</p>
<p>h(t)= c-(d-4t)^2
At time t=0, a ball was thrown upward from an initial height of 6 feet. Until the ball hit the ground, its height, in feet, after t seconds was given by the function h above, in which c and d are positive constants. If the ball reached its maximum height of 106 feet at time t=2.5, what was the height, in feet, of the ball at t=1?</p>
<p>Answer: 70</p>
<p>Ths is an sat problem?</p>
<p>Yup, from The Official SAT Study Guide</p>
<p>Wow i got no idea how to do that problem.</p>