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3 years ago

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An atom of silicon is approximately 0.00000000025 meters wide. How do you express that number in scientific notation? O 25 10-10

meters O 2.5 × 10-11 meters O 2.5 1010 meters O 2.5 x 10-10 meters

1 answer:

garik1379 [7]3 years ago

8 0

Answer:

mohydty868788

Step-by-step explanation:

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Answer:

Step-by-step explanation:

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In an endurance race, Rachel ran

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Answer:

$31\frac{1}{5}\ miles$

Step-by-step explanation:

we know that

The speed is equal to divide the distance by the time

so

The distance is equal to multiply the speed by the time

we have

$speed=9\frac{3}{5}\ \frac{miles}{hour}$

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$distance=(9\frac{3}{5})(3\frac{1}{4})$

Convert mixed number to an improper fraction

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substitute

$distance=(\frac{48}{5})(\frac{13}{4})=\frac{624}{20}=31,2\ miles$

Convert to mixed number

$31.2\ mi=31+0.2=31+\frac{1}{5}=31\frac{1}{5}\ miles$

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