In government class, Nadia computed the amount of debt of the federal government after a third of it was paid in 1995. The calculator displayed the number 3.28E12. What is this number in scientific notation?(1 point)
Responses
3.28+1012
3.28 plus 10 superscript 12 baseline
3.28×10−12
3.28 times 10 superscript negative 12 baseline
3.28×1012
3.28 times 10 superscript 12 baseline
12×103.28
3.28×10^12
Sam is comparing the half-life of two isotopes of uranium. The half-life of Uranium-238 is 4.5×10^9 years. The half-life of Uranium-233 is 1.6×10^5 years. He computed how much greater the half-life of Uranium-238 is than that of Uranium-233, and his calculator displayed the number 2.81E4. What is this number in scientific notation?(1 point)
Responses
2.81×104
2.81 times 10 superscript 4 baseline
2.81×10−4
2.81 times 10 superscript negative 4 baseline
2.81+104
2.81 plus 10 superscript 4 baseline
4×102.81
2.81×10^4
The number 3.28E12 in scientific notation is represented as 3.28×10^12.
To convert a number into scientific notation, we need to understand the basic structure. Scientific notation is written in the form "a x 10^b", where "a" is a number greater than or equal to 1 but less than 10, and "b" is the exponent.
In the given number, 3.28E12, the "E" notation represents the exponent. To convert it into scientific notation, we need to replace the "E" with "x 10^". So, 3.28E12 becomes 3.28 x 10^12.
Therefore, the number in scientific notation is 3.28 x 10^12.