Mathematics
22 Online
OpenStudy (jravenv):
Help me with this problem?
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OpenStudy (jravenv):
Vocaloid (vocaloid):
multiply both sides by 4 first, what do you get?
OpenStudy (jravenv):
12
OpenStudy (jravenv):
and I don't know what the other would be
OpenStudy (anonymous):
COMEBACK!!!!!!!!!!!
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Vocaloid (vocaloid):
what happens when you multiply (y/4) times 4?
OpenStudy (jravenv):
you get y right?
Vocaloid (vocaloid):
yes
so, what do you get when you multiply (y-1)/2 by 4?
OpenStudy (jravenv):
-2(y-1)?
Vocaloid (vocaloid):
not quite, check your sign
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OpenStudy (jravenv):
Which one?
Vocaloid (vocaloid):
the first sign
OpenStudy (jravenv):
2(y-1)
Vocaloid (vocaloid):
correct! so put them together:
y - 2(y-1), now distribute the 2
OpenStudy (jravenv):
y-2y-1
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Vocaloid (vocaloid):
not quite, check the last sign
OpenStudy (jravenv):
y-2y-3?
Vocaloid (vocaloid):
also, check the last number
OpenStudy (jravenv):
y-2y-2
OpenStudy (jravenv):
Sorry my brain is mathed out xD
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Vocaloid (vocaloid):
check the last sign
what is (-2)*(-1)?
OpenStudy (jravenv):
2
OpenStudy (jravenv):
Ohh so you want it like y-2y+2?
Vocaloid (vocaloid):
yes, y-2y+2
the sign is important!
anyway, you can rewrite y-2y+2 as -y+2
OpenStudy (jravenv):
-y+2 okay what's next?
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Vocaloid (vocaloid):
|dw:1433555133832:dw|
Vocaloid (vocaloid):
what happens when you add y to both sides and subtract 2 from both sides?
OpenStudy (jravenv):
Y> 10
?
Vocaloid (vocaloid):
now look at your answer choices....
Vocaloid (vocaloid):
also, check which direction your > sign is pointing
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OpenStudy (jravenv):
That's an answer! Thank you! You're my favorite, you're one of the few who actually explains and lets me do the work at the same time thank you
Vocaloid (vocaloid):
your answer is wrong, check which way the < sign is pointing
OpenStudy (jravenv):
So Y < 10?
Vocaloid (vocaloid):
yes, do you understand why?
Vocaloid (vocaloid):
also, check your sign on 10
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OpenStudy (jravenv):
Because when you multiply a negative you have to swap the directions. so it's y<-10
OpenStudy (jravenv):
right?
Vocaloid (vocaloid):
|dw:1433555456148:dw|