Final answer:
To find out how many times greater 2.1 × 10° is compared to 1.9 × 10°, divide 2.1 by 1.9, yielding approximately 1.105.
Step-by-step explanation:
To compare how many times greater 2.1 × 10° is compared to 1.9 × 10°, we can simply divide the larger number by the smaller number:
2.1 ÷ 1.9 = 1.10526315789
Therefore, 2.1 × 10° is approximately 1.105 times as great as 1.9 × 10°.