Answer:

Step-by-step explanation:
The given complex number is

The polar form of this complex number is;
, where


and

This implies that;
to the nearest degree.
Hence the polar form is

Answer:
maximum at (4, 9)
Step-by-step explanation:
The equation of a parabola in vertex form is
y = a(x - h)² + k
where (h, k) are the coordinates of the vertex and a is a multiplier
y = - 1(x - 4)² + 9 is in this form
with vertex = (4, 9)
• If a > 1 then vertex is a minimum
• If a < 0 then vertex is a maximum
here a = - 1 , hence vertex (4, 9) is a maximum
Answer: 2,000
Step-by-step explanation:
You can write the equation 
Then combine like terms 
Divide by 5 on both sides 
Find 2x 
Answer:
Step-by-step explanation:
using pythagoras theorem
a^2 + b^2 = c^2
B^2 + 8^2 = 15^2
B^2 + 64 + 225
B^2 = 225 - 64
B^2 = 161
B =
OR 12.7
The answer is 7 7/8. Hope this helps!
Here's the math: