Answer:
An even monomial function is a monomial function in which the degree, or exponent, of the variable is an even number.
Answer:

Step-by-step explanation:
It is given that,
Magnitude of a A, 
magnitude of B, 
The angle betwern a and b is 
Dot product,

So, a.b is equal to 0.
Answer:
A) the unknown is 5
B) the unknown is also 5
C) unknown is 23
D) unknown is 19
Step-by-step explanation:
Hope this is right and helps!
Answer: You mean "x" like times? If so 4 x)
Step-by-step explanation: