Ten point nine
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.
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
6.3 * 109 IS in standard form.
ClX
11.5 * 109
As a number it is: 109,000,000 = 109 million
109 over 10 written as a decimal is 10.9
4,700,000,000 or 4.7 × 109
2.18 = 109/50
109/100