When you multiply two numbers, let’s say x and y, there are no negatives, so you know that it is positive. So that means it’s xy. Now, imagine we make that a -x times y. Since there is only 1 negative, it is negative. So that would be -xy. Now, imagine you have -x times -y. Since there are an even number of negatives, they cancel out!! (Magic). So -x times -y is xy.
Indirect proof or contradiction
Are there choices to pick from?
The answer is 1.857 since there is 1000 grams in a kilogram
Answer:
8.50(43) + 10.50(6.5)=$433.75
Step-by-step explanation:
8-2=6
10+6+3=19
I’m not sure if you are allowed to do it that way so I can find other ways if needed
