Answer:
11) 
12)
13a)
and 
13b)
Step-by-step explanation:
11. The given equation in rectangular coordinates is 
To convert to polar form, use the relation 
This implies that:



In polar coordinates,
is a circle with radius 4 units.
12. From the diagram;




We can see that two arrows are moving in anticlockwise direction to meet A which is moving in the clockwise direction;

13. The conjugate of the complex number:
is 
Part a) The given complex numbers are:
and 
The conjugates of these complex numbers are:
and 
Part b) The product of
and
is
The conjugate of the product is:
I’m sure the answer is, she can drive 562.5 miles.
Explanation:
.16 x 562.5 = 90
(x-9)(x+7)=0
x-9=0 or x+7=0
x=9 or x=-7
:)
Answer:
70 degrees.
Step-by-step explanation:
Add up all the values and divide by 5.
350/5 = 70.