I believe the greatest common factor would be 1 because there are no other multiples that are the same. 1•21=21, and1•40=40
(-2)^4=16
(-2)^-1=-1/2
-1/2x16=-8
Answer: -8
Step-by-step explanation:
91011121314671234567891p
Six and eighty hundred thirty seven thousandths
31/7 = 4 3/7.....3/7 is less then 1/2....so the closest integer is 4