Express in decimal notation and multiply
7 km 2hm 7dom 5 m by 48
Answers
Answer:
Scientific notation is a way to express numbers in a form that makes numbers that are too small or too large more convenient to write. It is commonly used in mathematics, engineering, and science, as it can help simplify arithmetic operations. In scientific notation, numbers are written as a base, b, referred to as the significant, multiplied by 10 raised to an integer exponent, n, which is referred to as the order of magnitude:
b × 10n
Below are some examples of numbers written in decimal notation compared to scientific notation:
Step-by-step explanation:
Decimal notation Scientific notation
5 5 × 100
700 7 × 102
1,000,000 1 × 106
0.0004212 4.212 × 10-4
-5,000,000,000 -5 × 109
Engineering notation
Engineering notation is similar to scientific notation except that the exponent, n, is restricted to multiples of 3 such as: 0, 3, 6, 9, 12, -3, -6, etc. This is so that the numbers align with SI prefixes and can be read as such. For example, 103 would have the kilo prefix, 106 would have the mega prefix, and 109 would have the giga prefix. Note that the decimal place of the number can be moved to convert scientific notation into engineering notation. For example:
1.234 × 108 (scientific notation)
can be converted to:
123.4 × 106 (engineering notation
E-notation
E-notation is almost the same as scientific notation except that the "× 10" in scientific notation is replaced with just "E." It is used in cases where the exponent cannot be conveniently displayed. It is written as:
bEn
where b is the base, E indicates "x 10" and the n is written after the E. Below is a comparison of scientific notation and E-notation:
Scientific notation E-notation
5 × 100 5E0
7 × 102 7E2
1 × 106 1E6
4.212 × 10-4 4.212E-4
-5 × 109 -5E9
The "E" can also be written as "e" which is what is used by this calculator. It can also be written in other ways depending on the context, such as being represented differently in different programming languages.