What is 5.5×104 multiplied by 2.2×10−8 ? Write the answer in scientific notation.(1 point)
Responses
1.21×10−5
1.21 times 10 superscript negative 5 baseline
1.21×10−4
1.21 times 10 superscript negative 4 baseline
1.21×10−3
1.21 times 10 negative cubed
12.1×10−4
The correct answer is 1.21×10−3.
To multiply 5.5×10^4 by 2.2×10^-8, you can multiply the coefficients (5.5 * 2.2) and add the exponents (4 + (-8)) to get the final answer.
5.5 * 2.2 = 12.1
4 + (-8) = -4
Therefore, the answer in scientific notation is 12.1×10^-4.
To multiply numbers in scientific notation, you multiply the two base numbers and add their exponents.
In this case, 5.5 multiplied by 2.2 equals 12.1. The exponent for 5.5 is 4, and the exponent for 2.2 is -8. You add the exponents together, so 4 plus -8 equals -4.
Therefore, the answer is 12.1 times 10 to the power of -4, or 1.21×10^-3.