Answer:

Step-by-step explanation:
We know (Ohm second law) that
where k inlcudes the rest of the parameters (material, lenght). In our situation we have k=
. The moment the diameter becomes 8mm R becomes

Just to confirm is it x-5/8 or (x-5)/8
Answer:
1.44
Step-by-step explanation:
To solve this problem all you have to do is multiply the number in the parentheses the number of times the exponent is.
1.2 x 1.2 = 1.44
Hope this helps :)
Answer: The cost will be the same on month 5.
Step-by-step explanation:
x = number of months
50 + 100(x) = $550
200 + 70(x) = $550
x = 5