Answer:
a*n=area
Step-by-step explanation:
Answer:
It's -7
Step-by-step explanation:
Answer:
4) C
5) C
Step-by-step explanation:
That's the associative property of addition
it is normally written as
(a+b)+c=a+(b+c)
which is like what you have
(17+4)+9=17+(4+9)