Answer:
hope it helps your friend I think that is equivalent to the question you just asked
Answer:
Required,


Step-by-step explanation:
Given volume and depth respectively,
and 
To find length and width of the rectanglular swiming pool we know,
Volume=length
height
depth.
Let depth=D=x-3, length=L, width=W, then



After divide we will get
with remainder -144.
Thus,

Now to find root of,

Thus,


The probability of getting all heads is 1 / 2^6 = 1/64 as there is only 1 event where this happens in a possible 2^6 = 64 events. It is the same as the probability of getting all tails. The probability of getting at least 1 head is 1 - p(all tails) = 63/64.