Answer:
7*2/5 it is a improper fraction
The product should have a 1 significant digit.
<h3>Scientific notations</h3>
When multiplying Scientific notations, the significant figure of the final result must be approximated to the scientific notation that has the least decimal place.
From the question given, if we 4.5160 x 10^3, 2.09 x 107, and 5.8 x 10^3 are multiplied, the product should have 1 significant digits since the least decimal value that occur in question is 1dp
Hence the product should have a 1 significant digit.
Learn more on product of decimals here: brainly.com/question/28416295
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Answer:
642,000,000,000,000,000,000,000 kg
Step-by-step explanation: Basically you are multiplying 6.42 by 100,000,000,000,000,000,000,000. That looks really intimidating but it is very simple. All you have to do is move the decimal 23 hops to the right. Moving it to the right makes the number big, were moving it to the left makes the number smaller. We want a bigger number because we are writing the number in standard notation. Right now it is in scientific notation form (scientific notation is used because it is easier and quicker to write than writing 21 zeros).
The surface area of the cube is 1536 square feet because (16×16)×6=1536 square feet. Hope it help!
Answer:145
Step-by-step explanation:the answer is 145
