Answer:
It should take around 15 minutes
Step-by-step explanation:
Answer:rational
Step-by-step explanation:
X=4 x=-4 Due to the difference in squares theorem
Its d 729 because on 1 layer theres are 81 cubes and there are 9 layers so 81 times 9 equals 729
Hope this helps
If the question is what I think it is, then it's simple. All you need to do is divide 420 by 15; and you'll get the answer: 28.
