It could be because of how hard they are and no one knows the answer.
C=2(pi)r... 81.64 2(3.14)(13)... hope that helped :)
152,909 is rounded to 200,000 because 5 or more raise its score, and 4 or less let it rest.
Answer:
Make it as simple as possible, and use 1 and −1 .
1×1×1×1×1×−1×−1×−1×−1×−1=
15×(−1)2×(−1)2×−1=
1×1×1×−1=
−1.
So, the sign will be negative.
Another way of thinking about this is to not even think about the positive integers, as they won’t affect the sign. A positive integer times a positive integer is still a positive integer; a negative integer times a positive integer is still a negative integer.
So, you have five negative integers. Think of it like two negative integers, two more negative integers, and a single negative integer. Since two negative integers form a positive integer, you now have a positive, positive, and negative integer. This forms a negative sign.
