Question

Which is the best estimate for (6.3x 10^-2)(9.9x 10^-3) written in scientific notation?

A. 6x10^-4
B. 60 x 10^-5
C. 6x 10^7
D. 60 x 10^6​

Answer 1

To find the product of (6.3x10^-2)(9.9x10^-3) in scientific notation, multiply the coefficients and add the exponents. Answer: A. 6x10^-4

Step-by-step explanation:

To find the product of (6.3x10^-2)(9.9x10^-3) in scientific notation, we multiply the coefficients and add the exponents.

6.3 * 9.9 = 62.37

10^-2 * 10^-3 = 10^-5

Therefore, the product is 62.37x10^-5. This can also be written as 6.237x10^-4 in standard scientific notation.

Answer: A. 6x10^-4