Answer:
Step-by-step explanation:
Answer:

Step-by-step explanation:
Given

Required
Find 
From the attachment:
The measure of
is calculated using the following expression:

Where
-- right-angled.
The expression becomes



Answer: The new amount is 0.78*5500. Which is 4290. The decrease is 5500-4290=1210.
Answer:
6+3i
Step-by-step explanation:
4+2=6
-3i+6i=3i
6+3i