Mathematics
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OpenStudy (anonymous):
compute the linear equation
(-22.2 , 19.9)+3(-0.8 , 6.3)
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OpenStudy (dan815):
?
OpenStudy (dan815):
Could you clarify a little more? Do they want us to write a linear equation that corresponds to this vector?
OpenStudy (anonymous):
It says compute the following linear combinations, I think it means to solve it. The first one was 4(1,7)-2(5,-3) and i got 64
OpenStudy (dan815):
Okay hold on I know someone who would know, @ikram002p
OpenStudy (ikram002p):
@brookdrew how did u get 64 for second eq ?
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OpenStudy (anonymous):
I did 4(1,7)-2(2) then 4*(1,7)-2(2) then 68-2(2) then 68-4
OpenStudy (ikram002p):
well no its not like that
OpenStudy (ikram002p):
u must get a point as an answer
OpenStudy (anonymous):
oh okay, how is it then ?
OpenStudy (ikram002p):
u have :-
4(1,7)-2(5,-3) = (1*4, 7*4)-(2*5, 2*-3)=(4,28)-(10,-6)=(4-10 , 28+6)=(-6,34)
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OpenStudy (ikram002p):
so can u solve this the same way ?
(-22.2 , 19.9)+3(-0.8 , 6.3)
OpenStudy (anonymous):
so (-22.2, 19.9) (3*-0.8. 3*6.3) ?
OpenStudy (anonymous):
if its right il go to the next step ?
OpenStudy (ikram002p):
dnt forget there is + sighn btw
OpenStudy (anonymous):
oh okay, so is the rest right ?
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OpenStudy (ikram002p):
(-22.2, 19.9)+ (3*-0.8. 3*6.3)
so compute
3*-0.8 =?
and 3*6.3 = ?
OpenStudy (anonymous):
(2.4,18.9)
OpenStudy (anonymous):
Is the final answer (-19.8,38.8)
OpenStudy (ikram002p):
(-2.4, 18.9)
thats correct nw compute
(-22.2, 19.9)+ (-2.4, 18.9) =?
OpenStudy (anonymous):
(-19.8,38.8)
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OpenStudy (ikram002p):
-22.2+ - 2.4 =??
its not -19.8
OpenStudy (anonymous):
so (-24.6,38.8)
OpenStudy (anonymous):
-22.2+-2.4=-24.6
OpenStudy (ikram002p):
yep , correct ^_^
OpenStudy (anonymous):
Thank youu!!
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OpenStudy (ikram002p):
np :)
OpenStudy (anonymous):
:)