guy wants to add 7,145 and 8,265 and using mental math strategies what steps could guy take to add the number is guy,s answer co
2 answers:
Answer:
The sum of two numbers is 15,410.
Step-by-step explanation:
We have to add two numbers using mental math trick. The numbers to be added is 7145 and 8265.
We can use the associative property of addition to solve this problem.
Associative property of addition states that:
Now,
7145 + 8265
Thus, the sum of two numbers is 15,410.
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If 
is true, then 
is false, which in turn means 
is true.
If is false, then is true, and so is false.
So, because
in both cases, the statement is a tautology (always true).
If you were to put this in a table, you would have one column each for
. In the first column () you can think of as an independent variable that can only take two values, true and false. In the next column (), you would negate the value in the previous column. And so on.
It should roughly look like this:
p ... ~p ... ~(~p)
T ... F ... T
F ... T ... F
If
So, because
If you were to put this in a table, you would have one column each for
It should roughly look like this:
p ... ~p ... ~(~p)
T ... F ... T
F ... T ... F