Answer:

Step-by-step explanation:
If the complex number
is a root of a cubic function, then the complex number
is a root too. Thus, the cubic function has three known roots
and can be written as

Answer:
B.
Step-by-step explanation:
Surface area = πr(r + L) where r = radius of the base and L = the slant height.
= 12π(12 + 40)
= 12*52π
= 624π.
Answer:
5) a)(-4,-6) b) (4,2) c) (2,6) 6) (3,2)
Step-by-step explanation:
5) the solution is the points where the lines meet.
6) graphed the lines; the picture of the graph is attached below
Answer:
y=19.2
Step-by-step explanation:
Here as y is proportional to x
so

When y = 12 , x = 5
We have
12 = 5k

So now we have
y=2.4x
When x = 8
y = 2.4(8)
y = 19.2
ten times bracket two Point five add thirteen Point five bracket