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tatyana61 [14]
3 years ago
6

Please help me !!!!!!!!!!

Mathematics
1 answer:
Setler [38]3 years ago
3 0
It would equal 5 x 10 ^ 10
because 10 ^ 10 is 10 billion and 9 x 10 billion is 90 billion and 4 x 10 billion is 40 billion. so, 90 billion - 40 billion. that's 50 billion, and that can be turned into 5 x 10 ^ 10.
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