Question

Calculate the answer. Express it in scientific notation. All answers should have the correct number of significant figures. (386) (204) =

Answer 1

so we know that when you multiply it together it equals 78,744 so we move it back 4. which brings us to 7.87 then multiply it by 10^4 which is 44.

so the answer is 7.87 * 10^4

hope i was able to help plz message me if u need anymore help or if u dont quite understand.  

Answer 2

Answer: $7.87\times 10^4$

$(386)(204)=386 \times 204 =78744$

In scientific notation, a number is written between 1 and 10 multiplied by a power of 10.

$m\times 10^n$ where m lies between 1 and 10 and n is an integer.

So, 78744 can be written in scientific notation as : $7.8744 \times 10^4$

Significant digits in the answer depends on the least significant digits in the multipliers. The significant digits in the multipliers is 3. Therefore, the answer must contain 3 significant digits.

Answer: $7.87 \times 10^4$