<h3>
Answer: They're all the same</h3>
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Reason:
means we have 6 copies of "2" multiplied out as shown in choice B. That explains how A and B are the same, and we can say
The parenthesis are optional, but I find they're handy to count the '2's easier.
----------------
Now notice that
So,
The last step is possible because we have two copies of 
multiplied together.
This shows that choice C is equivalent to A and B.
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Lastly,
The jump to the last step is possible because we have three copies of 
multiplied together.
This shows choice D is equivalent to the others.
All four expressions are the same.
They represent different ways to say the same number. That number being 64.
<h2>
Answer:</h2><h2>
It takes 5.744 hours for drain B to empty the pool.</h2>
Step-by-step explanation:
Let drain A nad be are used to empty a swimming pool.
Given drain A alone can empty the pool in 4.75 hours.
When both A and B are open, it takes 2.6 hours.
The time taken by B to draint the pool = ?
2.6 (t+4.75) = 4.75t
2.6t + 12.35 = 4.75t
t = 5.744 hours
It takes 5.744 hours for drain B to empty the pool.
Can someone help me thigh this one to
if any doubt leave a comment
