Posted by **Ashley** on Sunday, February 3, 2013 at 3:34pm.

The power in an electric circuit varies inversely with the resistance. If the power is 1200 watts when the resistance is 12 Ohms, find the power when the resistance is 6 Ohms.

- Algebra -
**Anonymous**, Sunday, February 3, 2013 at 4:06pm
A taxi company charges riders a fixed charge of $2.30 plus $1.20 per mile. How many miles must a rider go to have an average cost per mile of $1.30?

- Algebra (Anon.) -
**PsyDAG**, Sunday, February 3, 2013 at 4:32pm
First, if you have a question, it is much better to put it in as a separate post in <Post a New Question> rather than attaching it to a previous question, where it is more likely to be overlooked.

Let n= # miles

2.30 + 1.20n = 1.30n

- Physics Ashley needs help -
**PsyDAG**, Sunday, February 3, 2013 at 4:34pm
Indicate your subject in the "School Subject" box, so those with expertise in the area will respond to the question.

- Physics Ashley needs help -
**PsyDAG**, Sunday, February 3, 2013 at 4:35pm
Indicate your **specific** subject in the "School Subject" box, so those with expertise in the area will respond to the question.

- Algebra actually :) -
**Damon**, Sunday, February 3, 2013 at 4:41pm
p = k/R

1200 = k/12

k = 14400

so

p = 14400/6

p = 2400 Watts

- Algebra Anon -
**Damon**, Sunday, February 3, 2013 at 4:43pm
c = 1.2 m + 2.3

c/m = 1.2 + 2.3/m = 1.3

2.3/m = 0.1

m = 23 miles

- Algebra -
**najat**, Wednesday, May 4, 2016 at 1:03pm
when P=1200W , R=12Ù

the current is I^2=P/R=100 , I=10A

So the power P=? R=6Ù I=10A

P=I^2R= 100*6=600W

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