Answer:
a. 
Step-by-step explanation:
The given vector is v= 4i - 5j
The magnitude of this vector is;



The unit vector u in the direction of v is;



We rationalize to get

Answer:
1/1.27
Step-by-step explanation:
There are 151,200 possible combinations. If you'd like an explanation of my answer, please let me know.
Answer:
$856
Step-by-step explanation:
Find 7% of $800 and then add it to $800
Remove the radical by raising each side to the index of the radical.
x = 5/2