Answer:
3
Step-by-step explanation:
Given
f(x) =
, then
f(12) =
=
= ± 3
There are 2 values 3 and - 3
The positive value of f(12) is + 3
Answer:
There is no following, we have data of all the people
Step-by-step explanation:
There where Sixty-five salespersons asked and the if we add all the persons that where asked it is the same. So there is no following
Fourteen people answered that they generally sell two cars; 14
nineteen generally sell three cars; 19
twelve generally sell four cars; 12
nine generally sell five cars; 9
eleven generally sell six cars 11
Adding 14+19+12+9+11=65 persons
Answer:
Side length =
cm , Height =
cm , Volume =
cm³
Step-by-step explanation:
Assume
Side length of base = x
Height of box = y
total material required to construct box = A ( given in question)
So it can be written as
A = x² + 4xy
4xy = A - x²

Volume of box = Area x height
V = x² ₓ y
V = x² ₓ (
)
V = 
To find max volume put V' = 0
So taking derivative equation becomes

A = 3 
= 
x = 
put value of x in equation 1
y =
y = 
y = 
So the volume will be
V =
× y
Put values of x and y from equation 2 & 3
V = 
V = 