Question

4.5E + 13 is an example of the ________ format.

1) Scientific
2) Fixed
3) Standard
4) Percent

Answer 1

The expression 4.5E + 13 is an example of scientific notation, a format used to express very large or small numbers compactly.

Step-by-step explanation:

The format 4.5E + 13 is an example of the scientific notation. Scientific notation is a method of writing numbers that are too large or too small to be conveniently written in decimal form. It is used in various scientific fields, including physics, chemistry, and engineering, to simplify numbers that have many zeros before or after significant figures.

For example, numbers that are fractions can also be indicated by scientific notation. To convert the number 0.0000045 into scientific notation, we express it as 4.5 X 10-6. This process involves moving the decimal point so that only one non-zero digit remains to the left of the decimal, then multiplying by 10 raised to a power that puts the decimal back in the original position.

By writing a number in scientific notation, we convey significant figures without ambiguity. For instance, the number 450 with two significant figures is written as 4.5 × 102 in scientific notation, whereas 450.0, which has four significant figures, would be 4.500 × 102.