Do you have a picture of the problem
A negative times a negative is a positive. I am not sure if that's the question, but hopefully that helps if it was.
Answer:
180-30
=150
Step-by-step explanation:
subtract whole area with degree given
Answer:
DBE = 33
Step-by-step explanation:
add 23 + 27 = 50
subtract 50 from 83
equals 33
Answer:

Step-by-step explanation:
Given the expressions all that is required is to expand them (using the distributive property) to see which answers they match up to:
For a:
For b:
For c calculate the square of a sum: 
(add like terms) c: 
For d: 
