Answer:
The answer is number 3.
2.226 x 10^8
I just took the quiz btw :)
The value of (5.3x 10^4) (4.2x10^3) in scientific notation Option C 2.226 times 10^8
5.3×10^4 × 4.2 × 10^3
We multiply the numbers out front
5.3× 4.2 = 22.26
We add the exponents
10^(4+3) = 10^7
22.26×10^7
But we are not done yet because The number out front has to be between 1 and less than 10
Move the decimal 1 place to the left and add 1 to the exponent
2.226 × 10 ^(7+1)
=2.226×10^8.
Scientific notation is a way of writing very large or very small numbers. A number is written in scientific notation when a number between 1 and 10 is multiplied by a power of 10. For example, 650,000,000 can be written in scientific notation as 6.5 ✕ 10^8.
Scientific Notation is the expression of a number n in the form a∗10b. where a is an integer such that 1≤|a|<10. and b is an integer too. Multiplication: To multiply numbers in scientific notation, multiply the decimal numbers.
The proper format for scientific notation is a x 10^b where a is a number or decimal number such that the absolute value of a is greater than or equal to one and less than ten or, 1 ≤ |a| < 10. b is the power of 10 required so that the scientific notation is mathematically equivalent to the original number.
To learn more about scientific notation, refer
https://brainly.com/question/1767229
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