If the question is about 8.428*109, then it is 8,428,000,000.
109 or, if you prefer, 1.0*109
109 tenths in decimal form = 10.9
ClX
As a number it is: 109,000,000 = 109 million
109 in Roman numerals is CIX.
one million, one hundred nine thousand, five hundred.
6.3 * 109 IS in standard form.
If the question is about 8.428*109, then it is 8,428,000,000.
109 or, if you prefer, 1.0*109
109 tenths in decimal form = 10.9
11.5 * 109
ClX
109 over 10 written as a decimal is 10.9
As a number it is: 109,000,000 = 109 million
4,000,000,000 or 4.0 × 109
It is: 1.0*109