Mathematics
18 Online
OpenStudy (anonymous):
solve for C
a=1/3(a+b+c)
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (mertsj):
1. Multiply both sides by 3
2. Subtract a from both sides
3. Subtract b from both sides.
OpenStudy (anonymous):
A.
c = 3A – (a – b)
B.
c = 3A – a – b
C.
c = 3a + 3b + A
D.
c = 3Aa
OpenStudy (anonymous):
so 3a=(a+b+c)
OpenStudy (mertsj):
Do you have A and a or are they both a ?
OpenStudy (anonymous):
then...
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (anonymous):
I was wondering that.
OpenStudy (anonymous):
3=(b+c)
OpenStudy (anonymous):
then.. 3c?
OpenStudy (anonymous):
idk about the a's
OpenStudy (mertsj):
Look at the problem you were given. Does it have A in it?
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (anonymous):
yes, A=1/3(a+b+c)
OpenStudy (mertsj):
Then:
1. Multiply both sides by 3
2. Subtract a from both sides
3. Subtract b from both sides.
OpenStudy (anonymous):
1. 3A=1/3(a+b+c)
2. 3= 1(b+c)
3. b-3=c
OpenStudy (mertsj):
1. You multiplied the left side by 3 but not the right side.
OpenStudy (anonymous):
1. 3A=1/9(a+b+c)
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (mertsj):
What is:
\[3\times \frac{1}{3}=\]
OpenStudy (anonymous):
1. 3A= 3/9(a+b+c)
OpenStudy (mertsj):
\[3 \times \frac{1}{3}= \]
OpenStudy (anonymous):
3/9
OpenStudy (mertsj):
Would you please do that problem?
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (anonymous):
1
OpenStudy (anonymous):
cross divide
OpenStudy (anonymous):
3/1 x 1/3 = 1/1 x1/1
OpenStudy (mertsj):
So what is:
\[3 \times \frac{1}{3}(a+b+c)=\]
OpenStudy (anonymous):
1(a+b+c)
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (mertsj):
And what is 1(a+b+c)
OpenStudy (anonymous):
a+b+c
OpenStudy (mertsj):
Now proceed with the three steps of the problem I outlined above.
OpenStudy (anonymous):
so then 3A=a+b+c
2. 3A=b+c
3. 3A=c
OpenStudy (mertsj):
1. Multiply both sides by 3
2. Subtract a from both sides
3. Subtract b from both sides.
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (mertsj):
2. Subtract a FROM BOTH SIDES!!!!!!
OpenStudy (anonymous):
2. 3= b+c
3. b-3=c
OpenStudy (anonymous):
my answer isn't even close to one of the choices
OpenStudy (anonymous):
A.
c = 3A – (a – b)
B.
c = 3A – a – b
C.
c = 3a + 3b + A
D.
c = 3Aa