One speed skater starts across a frozen lake at an average speed of 9 m/s. Ten seconds later, a second speed skater starts from
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The answer & explanation for this question is given in the attachment below.
Answer:
Step-by-step explanation:
In order to add or subtract numbers in scientific notation, the powers of ten must have the same exponent. In this caes the diameter of an average human body cell is a power of -4 and the diameter of a plant cell is a power of -3. In order to add them, we can move the decimal over for the body cell diameter:
Add the two values: