Answer:
$40
Step-by-step explanation:
If he spent $40 and has none left that means he currently has $0.
If you subtract $40 - b = $0
b = $40
Well depending on how much he asked for can you please give more details
Answer:
A
Step-by-step explanation:
Answer can be A).-5/8....
Answer:
10 minutes
Step-by-step explanation:
I'm not sure if im correct, so im sorry if im wrong.
Answer:
Option B) (5+6)+4=5+(6+4) is correct
An example of the associative property of addition is (5+6)+4=5+(6+4)
Step-by-step explanation:
Given 
Verify that the given equation is an example of associative property of addition or not:
We have the associative property of addition

Comparing the equation (1) and(2) we have the given equation is in associative property
Therefore option B) (5+6)+4=5+(6+4) is correct
An example of the associative property of addition is (5+6)+4=5+(6+4)