Answer:
I'm bad at math sorry I need help with social studies. helppppppp
Step-by-step explanation:
HELP
<span>The given expression is (–1 + i) + (21 + 5i) : It demonstrates the use of the commutative property of addition in the first step of simplifying the expression. The property of commutativity is that the bracket can change its position i.e. (i + 21 )+ (5i-1)</span>
The particular identity you want to use is

Then

Expand the binomial to get

Use the identity again to write

and so


Answer: 12.5%
Step-by-step explanation:
80x 12.5%=10
80+10=90
If a number is not divisible by 6, then it is not divisible by 3. That is your answer.
Hope this helps