Answer:
-9i
Step-by-step explanation:
the complex conjugate of a+bi is a-bi
0+9i is 0-9i
The circumference of any circle is (pi) x (the diameter of the circle).
The problem gives you both numbers, so all you have to do is multiply them.
Circumference = (pi) x (diameter) = (3.14) x (21cm) = <em>65.94 cm .</em>
Answer:
option c is the correct.
Step-by-step explanation:

by using the laws of exponent
a^m×a^n=a^m+n
12x^4+2/3x²

4x^4-3
4x³
Answer:

Step-by-step explanation:
Look at the picture.
The formula of a slope:
The point-slope form of an equation of a linear function:


We have two points (1, 4) and (-3, 6). Substitute:

It is decreasing, since the y-value is going down.