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chris65
 3 years ago
slove equations and put it into a matrices
4t5r=21
3t7r=18
chris65
 3 years ago
slove equations and put it into a matrices 4t5r=21 3t7r=18

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lilg132
 3 years ago
Best ResponseYou've already chosen the best response.14t  5r = 21 (multiply all by 7) 3t  7r = 18 (multiply all by 5) 28t  35r = 147 15t + 35r = 90 add the two equations together 13t =237 t = 18.230769230769230769230769230769 4(18.230769230769230769230769230769)  5r = 21 72.923076923076923076923076923077  5r = 21 72.923076923076923076923076923077  21 = 5r 51.923076923076923076923076923077 = 5r 10.384615384615384615384615384615 = r not sure if this is right

chris65
 3 years ago
Best ResponseYou've already chosen the best response.1i got the answer of t=57/13 and r=9/13 but i have to put it into a matrices

lilg132
 3 years ago
Best ResponseYou've already chosen the best response.1lol damn i had it right the first time

lilg132
 3 years ago
Best ResponseYou've already chosen the best response.1let me write it out again

chris65
 3 years ago
Best ResponseYou've already chosen the best response.1ok but i dont know how to put it into a matrix

lilg132
 3 years ago
Best ResponseYou've already chosen the best response.14t  5r = 21 3t  7r = 18 4t = 21 + 5r divide everything by 4 t = 5.25 + 1.25r 3(5.25 + 1.25r)  7r = 18 15.75 + 3.75r  7r = 18 15.75  18 = 7r  3.75r 2.25 = 3.25r 2.25 / 3.25 = 3.25r / 3.25 9/13 = r 4t  5(9/13) = 21 4t + 45/13 = 21 4t = 21  45/13 4t = 228/13 4t / 4 = (228/13)/4 t = 57/13

lilg132
 3 years ago
Best ResponseYou've already chosen the best response.1ok let me work out how to put into matrix

chris65
 3 years ago
Best ResponseYou've already chosen the best response.1ok i got all that i just dont no how to make a matrix out of that

lilg132
 3 years ago
Best ResponseYou've already chosen the best response.1no idea with matrixes going to have to ask someone else sorry

chris65
 3 years ago
Best ResponseYou've already chosen the best response.1thats what i have to put my answer in

AriPotta
 3 years ago
Best ResponseYou've already chosen the best response.0only two sets of brackets?

AriPotta
 3 years ago
Best ResponseYou've already chosen the best response.0are they only looking for Dt and Dr?

AriPotta
 3 years ago
Best ResponseYou've already chosen the best response.0dw:1354244183257:dw there. lol

chris65
 3 years ago
Best ResponseYou've already chosen the best response.1ok i got another problem for ya

chris65
 3 years ago
Best ResponseYou've already chosen the best response.13xz=4 x+y+7z=0 3x+yz=4 and x=148/119 y=16/17 z=1

chris65
 3 years ago
Best ResponseYou've already chosen the best response.1that also has to be into a matrices

AriPotta
 3 years ago
Best ResponseYou've already chosen the best response.0oh. idk about 3 variable ones. i'm sorry :/
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