The correct answer is 1.19×10³ lbs.
The weight of first animal = 5.12×10² lbs
Performing multiplication to get the complete weight of first animal
The weight of first animal = 512 lbs
The weight of second animal = 6.8×10² lbs
Performing multiplication to get the complete weight of second animal
The weight of second animal = 680 lbs
Now, performing addition to find the approximate weights of two animals-
Final answer = 512 + 680
Performing addition to find the approximate weights of two animals
Final answer = 1192 lbs
Now, converting the number in scientific notation -
Final answer = 1.19×10³ lbs
Hence, the final answer in significant digits is 1.19×10³ lbs.
Learn more about calculations of sum in scientific notation -
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