X=-7
---------------------------------------------------------
<em>Answer,</em>
<u><em>1,760,000</em></u>
<em>Explanation Below, </em>
<u><em>Hope this helps :-)</em></u>
you have 10 fish and 3 died (must not have been taking very good care of them ?), but it didnt say that you cleaned them out ...
so you still have 10 fish in the tank
8 more got put in, so 10 + 8 = 18 fish
2 died but you STILL didnt take them out, so you have 18 fish in the tank now.
(a)
we are given
The average distance from the sun to the planet Venus is about 261,000,000 km
we have to write in scientific form
In scientific form , we write expression in terms of exponent of 10
so, we can write as



now, we can write in terms of exponents
............Answer
(b)
we are given
The diameter of a human hair is about 0.0025 cm
we can write in scientific form as



