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Maksim231197 [3]
3 years ago
8

Work out (5 x 10^3) x (9 x 10^7)

Mathematics
2 answers:
Sveta_85 [38]3 years ago
6 0

Step-by-step explanation:

5×10³) × (9×10^7)

= 45 × 10^10

= 4.5 × 10¹¹

Korvikt [17]3 years ago
5 0

Answer:

(5*10^3)*(9*10^7)=4.5*10^11

Step-by-step explanation:

5*10^3=5*1000=5000

9*10^7=9*10000000=90000000

5000*90000000=5*1000*9*10000000=5*9*10000000000=45*10000000000=450000000000, or 45 with 10 0's, or 10^10

45*10^10 is not simplified, as we need a number less then 10, so we divide 10 from 45, and add 1 to the exponent, getting 4.5*10^11

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