Solve the following and express the answer in scientific notation:(3.5 x 10^6 / (4.2 x 10^8)

A . -8.3 X 10^-3
b. 8.3 X 10^3
c. 8.3 X 10^-2
d. 8.3 X 10^-3

I say A

The answer is D

To solve the given expression and express the answer in scientific notation, follow these steps:

1. Divide the given numbers: (3.5 x 10^6) / (4.2 x 10^8).
The division of the numbers gives you 3.5 / 4.2 = 0.83333333333 (rounded to 12 decimal places).

2. Divide the exponents: (10^6) / (10^8).
Subtract the exponents: 8 - 6 = 2.

3. Express the result in scientific notation.
Convert the quotient from Step 1 into scientific notation by moving the decimal point two places to the right, since the exponent difference in Step 2 is positive. It becomes 8.33333333333 x 10^-2.

Among the answer choices provided:
A. -8.3 X 10^-3
B. 8.3 X 10^3
C. 8.3 X 10^-2
D. 8.3 X 10^-3

The correct answer is C: 8.3 X 10^-2.