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LenaWriter [7]
2 years ago
7

Help please due later today.....

Mathematics
2 answers:
Stells [14]2 years ago
6 0

Answer:

a- the sum = 0.0031

b- the fly is 0.0013 grams heavier

Gnesinka [82]2 years ago
3 0

Answer:

Step-by-step explanation:

a).

2.2 × 10^{-3} + 9 × 10^{-4} =

2.2 × 10^{-3} + 0.9 × 10^{-3} =

( 2.2 + 0.9 ) × 10^{-3} = <em>3.1 × </em>10^{-3}

b).

2.2 × 10^{-3} - 9 × 10^{-4} =

2.2 × 10^{-3} - 0.9 × 10^{-3} =

( 2.2 - 0.9 ) × 10^{-3} = <em>1.3 × </em>10^{-3}

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