Mentally your dividing the 12.50 by 10 and then thats 1/10 of it.
Second answe is the correct answer
A perfect square is a number which contains a a factor that involves a number multiplied by itself. You could also say a perfect square, when taken the square root of such a number, involves a whole number answer. Either explanation would work, and there are surely mainly more haha. 25 is the perfect square because 5×5 is a factor of 25, while 50 doesn't have a factor of the same numbers.
Yes
Step-by-step explanation:
4×7=28
and 7×4 also equal to 28