for a problem like number 3, you can make a system of 2 linear equations with 2 unknowns like Khan did, but also you can make one equation with one unknown. Let x = # of dozens of roses Let 17-x = # of dozens of carnations. Then your equation with one unknown is 15(x) + 8(17-x) = 192
I'm trying to learn this material on my own and I have already surpasses alg.1 and I'm 3/4th of the way through alg.2 thankyou for posting these videos :)
0k for problem number 2 would you write both answers since there is something I like to call the "OR" statement. so it would be; x=2.5 "or" x=3.5 and that would be it right?
Sal, for number 5 - shouldn't we have reduce 6p+12p=168 to it's lowest terms? This is what we did for question#3. I did reduced it to it's lowest term, but got a different answer = 12.
Your solution doesn't work for the first equation: 2(8)-0+3(-8) = 16 - 0 -24 = -8, not +8. The first and last equiations are parrallel planes so there is no solution.
you, saved me. my teacher is no good at explaining this stuff, and he no help at all. i love you no homo.
decon117 2 months ago
thank god for people like this
slashuur8760 8 months ago
Thank god u did that from california
ZaZ30001 8 months ago
Comment removed
runawaybg 8 months ago
for a problem like number 3, you can make a system of 2 linear equations with 2 unknowns like Khan did, but also you can make one equation with one unknown. Let x = # of dozens of roses Let 17-x = # of dozens of carnations. Then your equation with one unknown is 15(x) + 8(17-x) = 192
SpoiledLogic 1 year ago
yaay!! since my burnt out hippie teacher doesnt explain the math well, I struggled but u helped tremendously. Please continue to create these vids
leohekproductions 1 year ago
what do the lines around 3-6x mean in problem 1
Wafflesmart 1 year ago
@Wafflesmart It means the absolute value
tankerspanker 1 year ago
what do the to lines around 3-6x on the first problem mean
Wafflesmart 1 year ago
who are the 2 satists that gave this thumbs down
Wafflesmart 1 year ago
I'm trying to learn this material on my own and I have already surpasses alg.1 and I'm 3/4th of the way through alg.2 thankyou for posting these videos :)
NiNjA410404 2 years ago
quick question in (x-13)=2
since its a equation it does not become a postive
like x+13=2
or does it stay the same as a negative
RealPhilosopher 2 years ago
You have the same name of my most favorite actor :D Salman Khan ftw. :D:D:D
himynameisakshay 2 years ago
@himynameisakshay
**Salmon Khan
lolomgdude 1 year ago
Also for number 3 my 8th honors Algebra teacher showed me the same thing that you put in your steps
MrLegend92 2 years ago
0k for problem number 2 would you write both answers since there is something I like to call the "OR" statement. so it would be; x=2.5 "or" x=3.5 and that would be it right?
MrLegend92 2 years ago
Sal, for number 5 - shouldn't we have reduce 6p+12p=168 to it's lowest terms? This is what we did for question#3. I did reduced it to it's lowest term, but got a different answer = 12.
gothicreader 2 years ago
This comment has received too many negative votes show
You got number 4 wrong
Z = -8
x = 8
y = 0
Get it right before you make a video about it
munky445 2 years ago
Your solution doesn't work for the first equation: 2(8)-0+3(-8) = 16 - 0 -24 = -8, not +8. The first and last equiations are parrallel planes so there is no solution.
khanacademy 2 years ago 17
@khanacademy munky445 needs to take a linear algebra course
SpoiledLogic 1 year ago
Dude, he IS right.
ButterArrow12 2 months ago
lol i think u must be a math nerd that save the world!!!!!!
jackuy12345 2 years ago 9
wut grade is it?
uHkBu 2 years ago
yeah your doing algebra 2 now! good job
Nandine2 3 years ago
I wish you were making videos when I was taking math classes. These tutorials are really going to help my little brother.
Thanks so much for all your hard work!
ChewyWiener 3 years ago