Perform the indicated operations. Express the result in scientific notation. (5.7 × 105) + (4.6 × 106) – (2.9 × 105)

Question

Perform the indicated operations. Express the result in scientific notation. (5.7 × 105) + (4.6 × 106) – (2.9 × 105)

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Lydia 2 weeks 2021-09-12T15:42:11+00:00 1 Answer 0

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    2021-09-12T15:43:20+00:00

    Answer:

    1.3905 × 10^4

    Step-by-step explanation:

    First you should multiply all the two numbers  inside the parentheses

    5.7 × 105=598.5

    4.6 × 106=487.6

    2.9 × 105=304.5

    Now add the three numbers

    598.5+487.5+304.5= 1390.5

    scientific notation: Put the decimal after the first digit. To find the exponent count the number of places from the decimal to the end of the number.

    the answer in scientific notation: 1.3905 × 10^4

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