What is 5.5 x 101 multiplied by 2.2 × 10-8? Write the answer in scientific notation. (1 point)
1.21 × 10-4
1.21 × 10-3
12.1 × 10-4
1.21 × 10-5
To multiply two numbers in scientific notation, you need to multiply the coefficients and add the exponents.
5.5 x 10^1 multiplied by 2.2 x 10^-8:
(5.5 x 2.2) x (10^1 x 10^-8) =
12.1 x 10^-7
Therefore, the answer is 1.21 x 10^-6.
To multiply numbers in scientific notation, you multiply the decimal parts and add the exponents.
First, multiply 5.5 × 2.2 which equals 12.1.
Next, add the exponents: 1 (the exponent for 10 in 5.5 x 10^1) + (-8) (the exponent for 10 in 2.2 x 10^-8) = -7.
So, the answer is 1.21 x 10^-7.
To multiply numbers written in scientific notation, you can multiply the two decimal parts together and then add the exponents. Let's calculate the answer step by step:
1. Multiply the decimal parts:
The decimal parts of the numbers are 5.5 and 2.2. Multiply them together: 5.5 x 2.2 = 12.1.
2. Add the exponents:
The exponents are 1 and -8. Add them together: 1 + (-8) = -7.
3. Write the answer in scientific notation:
The answer is 12.1 x 10^-7.
Therefore, the correct answer is 1.21 x 10^-6.