Amodel used for the yield y of an agricultural crop as a function of the nitrogen level n in the soil (measured in appropriate units) is y = kn 49 + n2 where k is a positive constant. what nitrogen level gives the best yield?

The nitrogen level that gives the best yield is 7.

Step-by-step explanation:

We have the yield Y in function of the nitrogen level N defined as:

.

To know which nitrogen level N maximize the yield, we have to derive and equal to zero:

The nitrogen level that gives the best yield is 7.

In the graph, we model Y versus n, with k=100.

the equation cos(35) =a/25 can be used to find the length of bc what is the length of bc? round to the nearest tenth

step-by-step explanation:

i think the correct option is the second option.