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Mark studies a group of 30 whales. If each whale weighed approximately 3.8 x 105 pounds, find the total weight of all 30 whales. Express your answer in scientific notation.​

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Answer:

[tex] = 1.14 \times 10^{7}pounds[/tex]

Step-by-step explanation:

If each whales weighed

[tex]3.8 \times {10}^{5} [/tex]

Then 30 whales weighed

[tex]30 \times 3.8 \times {10}^{5} [/tex]

[tex] =114 \times {10}^{5} [/tex]

[tex] = 1.14 \times 10^{2} \times {10}^{10} [/tex]

Applying the law of indices we obtain

[tex] = 1.14 \times 10^{(2+ 5)}[/tex]

[tex] =1.14 \times 10^{7}pounds[/tex]

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