Answer:
D
Step-by-step explanation:
So we have the expression:
Combine like terms:
Add or subtract:
Simplify:
Our answer is D
You have two choices.
The minimum possible cost to operate your bat factory for a day is $390,
and there are two quantities of bats that both cost that much.
One possibility:
Produce no bats at all per day. Zero. Nada. None.
Cost = 0.06(0)² - 7.2(0) + 390 = $390 per day.
The other choice:
Produce 120 bats per day.
Cost = 0.06(120²) - 7.2(120) + 390
= 0.06(14,400) - 7.2(120) + 390
= 864 - 864 + 390
= $390 per day.
If you produce any other number of bats in a day ... more than zero
but not 120 ... then it will cost you more than $390 to operate the factory
that day.
Step-by-step explanation:
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
