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Andre45 [30]
2 years ago
5

Estimate

Mathematics
1 answer:
bixtya [17]2 years ago
5 0

Answer:

400009 \times  {10}^{8}

Step-by-step explanation:

(4 \times  {10}^{13} ) + (9 \times  {10}^{8} ) \\  \\  = (400000 \times  {10}^{8} ) + (9 \times  {10}^{8} ) \\  \\  = (400000 + 9) \times  {10}^{8}  \\  \\  = 400009 \times  {10}^{8}

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