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gjhfdfg
 2 years ago
Evaluating expressions,
gjhfdfg
 2 years ago
Evaluating expressions,

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gjhfdfg
 2 years ago
Best ResponseYou've already chosen the best response.0Easiest problem ever, but I forgot how to do them, dw:1361117139126:dw Can someone show me step by step how to solve this or create a problem giving me an example? Thanks.!

muhammad9t5
 2 years ago
Best ResponseYou've already chosen the best response.0\[1\frac{ 694 }{ 896 }\] do you mean?

muhammad9t5
 2 years ago
Best ResponseYou've already chosen the best response.0then p4 do you mean its power or 4 is multiplied?

gjhfdfg
 2 years ago
Best ResponseYou've already chosen the best response.0I have no idea... It just says 6P4,

gjhfdfg
 2 years ago
Best ResponseYou've already chosen the best response.0Noo, its not that, I'll take a screenshot

muhammad9t5
 2 years ago
Best ResponseYou've already chosen the best response.0ok... i am waiting for screenshot.

muhammad9t5
 2 years ago
Best ResponseYou've already chosen the best response.0this is Permutation.

gjhfdfg
 2 years ago
Best ResponseYou've already chosen the best response.0I also have this problem that includes a exclamation mark, dw:1361117585779:dw Do you know what its for?

gjhfdfg
 2 years ago
Best ResponseYou've already chosen the best response.0& whats permutation? O_O I have never ever heard of that

hartnn
 2 years ago
Best ResponseYou've already chosen the best response.1\(!\) means a factorial.

hartnn
 2 years ago
Best ResponseYou've already chosen the best response.1\(n!= n(n1)(n2).......3.2.1\) when n is a whole number. like for example 5! = 5*4*3*2*1 = 120

muhammad9t5
 2 years ago
Best ResponseYou've already chosen the best response.0answer is 1 it means that you need to expand 6 as 4 times and 8 as 6 times.

hartnn
 2 years ago
Best ResponseYou've already chosen the best response.1before getting to permutation, you should know what a factorial ! is .

gjhfdfg
 2 years ago
Best ResponseYou've already chosen the best response.0OH.! so I had something like 10! I would have to do 10*9*8*7*6*5*4*3*2*1= etc..?

muhammad9t5
 2 years ago
Best ResponseYou've already chosen the best response.06P4= 6*5*4*3 and 8P6= 8*7*6*5*4*3

muhammad9t5
 2 years ago
Best ResponseYou've already chosen the best response.0yes you are correct.

hartnn
 2 years ago
Best ResponseYou've already chosen the best response.1do you want to know how to get that^ ?

gjhfdfg
 2 years ago
Best ResponseYou've already chosen the best response.0I feel like I've done this stuff in 8th grade but had forgotten how to do some of this. These questions are for my precal class & I found it odd that I had a probability question in there

hartnn
 2 years ago
Best ResponseYou've already chosen the best response.1\(\huge ^nP_r = \dfrac{n!}{(nr)!}\)

gjhfdfg
 2 years ago
Best ResponseYou've already chosen the best response.0So basically I had to do the factorial (!) to the 6P & 8P?

hartnn
 2 years ago
Best ResponseYou've already chosen the best response.1\(\huge ^nP_r = \dfrac{n!}{(nr)!} \\\huge ^6P_4 = \dfrac{6!}{(2)!} \\ \huge 8P_6 = \dfrac{8!}{(2)!}\)

gjhfdfg
 2 years ago
Best ResponseYou've already chosen the best response.0Everything on the left side of the = is confusing to me

hartnn
 2 years ago
Best ResponseYou've already chosen the best response.1in the formula of nPr ? its just a formula, so for 6P4, i plugged in n=6 and r=4 in the standard formula.

gjhfdfg
 2 years ago
Best ResponseYou've already chosen the best response.0How would you know which ones to plug in? Because in one you have 6P4 & in the next 8P6, I don't get how you go to that?

hartnn
 2 years ago
Best ResponseYou've already chosen the best response.1n is before P , r is after P . in 6P4 , 6 is before P (so, n=6) and 4 is after P (so r=4) does this makes sense ?

gjhfdfg
 2 years ago
Best ResponseYou've already chosen the best response.0Ah, it does now.! :) Thanks you guys both for explaining this to me.!

hartnn
 2 years ago
Best ResponseYou've already chosen the best response.1Thank me when you get to correct answer.

hartnn
 2 years ago
Best ResponseYou've already chosen the best response.1i meant to ask you, whether you could now figure out the answer of that question...

gjhfdfg
 2 years ago
Best ResponseYou've already chosen the best response.0I do the factorial, 8*7*6*5*4*3*2*1, I thought?

gjhfdfg
 2 years ago
Best ResponseYou've already chosen the best response.0& then divide my answer by 2?

hartnn
 2 years ago
Best ResponseYou've already chosen the best response.1i never said you are wrong. its just not the final answer.

gjhfdfg
 2 years ago
Best ResponseYou've already chosen the best response.0Then I do the same with the 6

hartnn
 2 years ago
Best ResponseYou've already chosen the best response.16P4 = 6*5*4*3 8P2= 8*7*6*5*4*3 Question asks, 1 6P4/8P2 = 1 6*5 / 8*7*6*5 = 1 1/(8*7) ok ?

gjhfdfg
 2 years ago
Best ResponseYou've already chosen the best response.0Ah, I wasnt paying attention to the 1,

gjhfdfg
 2 years ago
Best ResponseYou've already chosen the best response.0Would I have to subtract the 1 from the 6 & start factoring 5?

hartnn
 2 years ago
Best ResponseYou've already chosen the best response.1no... first division operation is performed, so 6*5*4*3 will get cancelled from numerator and denominator, and what remains is just 1 1/(8*7) which i've already shown.

hartnn
 2 years ago
Best ResponseYou've already chosen the best response.1ok, clear till this : 6P4 = 6*5*4*3 8P2= 8*7*6*5*4*3

hartnn
 2 years ago
Best ResponseYou've already chosen the best response.1now divide them 6P4/8P2 =.... ?

gjhfdfg
 2 years ago
Best ResponseYou've already chosen the best response.0I got 0.0178 etc... Thats not right..

gjhfdfg
 2 years ago
Best ResponseYou've already chosen the best response.0I got 360 from 6*5*4*3 & 20160 from the factorial of 8.

gjhfdfg
 2 years ago
Best ResponseYou've already chosen the best response.0How would I keep it in fractions?

hartnn
 2 years ago
Best ResponseYou've already chosen the best response.1you can also cancel out like this : dw:1361120576575:dw got that ?

gjhfdfg
 2 years ago
Best ResponseYou've already chosen the best response.0Ah, got it.! I wasnt thinking about canceling out

gjhfdfg
 2 years ago
Best ResponseYou've already chosen the best response.0What happened to the 4 & 2?

hartnn
 2 years ago
Best ResponseYou've already chosen the best response.1i just realized i mistyped 8P6 (and have written 8P2 instead) 4 and 2 where ?

gjhfdfg
 2 years ago
Best ResponseYou've already chosen the best response.0The 4 after the P and the 2 after the other P

hartnn
 2 years ago
Best ResponseYou've already chosen the best response.1oh, we used the formula, right ? 64 = 2, so 2! in the denominator 86= 2, so 2! in the denominator

gjhfdfg
 2 years ago
Best ResponseYou've already chosen the best response.01/56 wasnt correct, could it be 55/56 by any chance?

hartnn
 2 years ago
Best ResponseYou've already chosen the best response.1?? you forgot '1...' again ? 1 1/(7*8)= 11/56=(561)/56 = 55/56
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