Answer:
- f = 4400/L
- 440 cycles per second
Step-by-step explanation:
When the variation is inverse, the product of values is a constant:
f·L = k = (400)(11) = 4400
f = 4400/L
Then a 10-inch string will vibrate with a frequency of ...
f = 4400/10 = 440 . . . cycles per second
The x=16 because you gotta subtract x one one side to make it a simple two step equation then to simplify x from 5x divide by 5 on both sides
The easiest way is to plug x=-4, y=-1 in the equation to see which one works.
8(-4)-9(-1)=-23
B is correct.
In order for the profit to be zero, the quantity of tacos produced must be greater than 210/3.25 = 64.615.
Therefore a small profit will be made when 65 tacos are produced, to wit:
3.25*65 = 211.25, less costs of $210, yields a profit of 1.25 on a quantity of 65 tacos
