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anonymous
 one year ago
Medal for Matrix help.
How would I solve for x?
[8 14 2x] = [2 74 6]
anonymous
 one year ago
Medal for Matrix help. How would I solve for x? [8 14 2x] = [2 74 6]

This Question is Closed

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.1what row by column matrix is this?

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.1so is A  [8 14 2x] and B =[2 74 6]?

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.1it's like find an x that will make both matrices equal...

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Yeah, that's the issue. I have no idea how to find x in this situation. It's been a while since I've done a problem like this.

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.1oh how about if we have something like this 2x=6 then we just solve for x. Because what I am assuming is that the last entry in A and B are supposed to be equal.

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.1I have done these, but with 2x2 or above

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I could give you the possible answers if that would help?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0a. x = 5.7 b. x = 17.7 c. x = 7 d. x = 6

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Yeah...my reaction exactly.

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.1this is so weird.. I'm calling wolfram lol

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0lol okay. That's a good idea. This was the original problem... \[[8 142x]  ([19 +17 1] + [14 +13 2]) = [3 44 9]\]

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.1T_T wait a sec.. I might have ... did you do the operation in paraenthesis first?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Oops! Ignore the plus signs. I dunno why I put them inside the matrices. and yes I did. Was I not supposed to?

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.1. ok hold on I think I might have see what is going.. yes you should do the ones in paraenthesis first ..

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.1that's what I was thinking too.

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.1what makes A=B ? but when I was to do the problem.. if I let x = 3 that last part will be equal but the first 2 entries aren't equal

Loser66
 one year ago
Best ResponseYou've already chosen the best response.0if A = B ,then 8 =2?? 14 =74 2x = 6 but how??

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.1something is wrong with the arithmetic.

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.1let's do it over... and no shortcut cheats.. now this is the original problem right? \[[8 142x]  ([19 +17 1] + [14 +13 2]) = [3 44 9]\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0That wouldn't surprise me. I've been doing math since about 10 am. and yes it is.

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.1\[[8, 14,2x]  ([19 , 17 , 1] + [14, 13 ,2]) = [3, 44, 9]\]

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.1let me put on my cglasses

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.1now let's do the ones in the () with adding the matrices.

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.1\[ ([19 , 17 , 1] + [14, 13 ,2]) \]

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.1\[ ([19+14 , 17+13 , 12] )\]\[[5,30,3] \rightarrow [5,30,3]\]

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.1\[[8 142x]  [5, 30, 3] \rightarrow [8514(30),2x3]\] are you sure it's not [8, 14, 2x] ?

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.1\[[8 142x]  [5, 30, 3] \rightarrow [8514(30),2x3] \rightarrow [3, 14+30,2x3] \rightarrow [3, 44, 2x3\] \[ \rightarrow [3, 14+30,2x3] \rightarrow [3, 44, 2x3]\]

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.1yay I think I got what x is !

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.1on the last entry we have to solve for x so now we have \[ [3, 44, 2x3] = [3, 44, 9]\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Really? (sorry, I'm doing this an something else at the same time)

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.1wait a sec... I think there are typos

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.1I think.. let me do this on paper.. there is a typo somewhere on your end or something.

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.1_ I got x = 3. who are these people giving these choices anyway?

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.1\[[8, 14, 2x] +[ 5 30 ,3] = [8+5, 1430, 2x+3] = [3, 44, 2x+3]\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0It's just random questions I'm given for practice. At the moment, I am unable to view the question, but as soon as I can, I'll let you know if there were any typos in my copy.

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.1\[[3, 44, 2x+3] = [3, 44, 9]\] there could be typos on my end but I got it... ok THIS TIME I AM CERTAIN I GOT IT!

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.1we just have to focus on the last equation because our first two entries are equal so we now solve for x for that last entry 2x+3=9 2x =93 2x=12 x = 6 there's a typo in your multiple choice

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.1yup x = 6 \[[3, 44, 2(6)+3] = [3, 44, 12+3] = [3, 44, 9]\]

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.1yay finally it's over. can I get a medal for this 1 x 3 horror festival? I'm not use to adding and solving like that XD

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.12x+3 = 9 doh I dropped a sign. It's D 2x = 93 2x=12 x=6

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0You're awesome! :D Hopefully I'll never get another question like this again, but thank you so much for all your help.

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.1that question sucked... I was never given like this and I'm used to adding vertically!

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Honestly, I've never had one like this either. The moment I looked at it, my brain went blank.

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.1it was tedious. doable but tedious... I think the latex threw me off too. That's why I got so many answers and what not.

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.1Cleaned up version \[[8 142x]  ([19 +17 1] + [14 +13 2]) = [3 44 9]\] \[\[[8 142x]  ([19+14 , 17+13 , 12] ) = [3 44 9]\] \[\[[8 142x]  ([5, 30 , 3] ) = [3 44 9]\] \[\[[8 142x] +([5, 30 , 3] ) = [3 44 9]\] \[\[[8+5, 1430,2x+3] ) = [3 44 9]\] \[\[[3, 44,2x+3] ) = [3 44 9]\] \[2x+3=9 \] \[2x+33=93 \] \[2x=12 \] \[\frac{2x}{2}=\frac{12}{2}\] \[x=6\] \[\[[3, 44,2(6)+3] ) = [3 44 9]\] \[\[[3, 44,12+3] ) = [3 44 9]\] \[\[[3, 44,9] ) = [3 44 9]\]
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