Simplify by removing the parenthesis
-(+1)=

- 1

Step-by-step explanation:

Since there is a - 1 outside of parentheses, you're technically going to use the distributive property to get your answer.

Multiply everything inside the parentheses by - 1.

1 is the only thing inside so it becomes - 1 and the negative outside of the parentheses goes away, so you can remove the parentheses as there's nothing left to do.

If this question was   -(-1)    it would become + 1

the answer to this question is yes

answer: c.  

step-by-step explanation:

mixtures containing substances that get attracted to magnet can be separated using a magnet. we can separate iron from a mixture of sand and iron, as only iron attracts to the magnet.