833, 000, 000, 000 = 8.33 × 10^11 0.00000027 = 2.7 × 10^7 19, 000, 000, 000, 000 = 1.9 × 10^15 0.0000000000546 = 5.46 × 10^-12

Let’s evaluate each statement one by one:

1. 833,000,000,000 = 8.33 × 10^11

– True. In scientific notation, 833 billion is correctly represented as 8.33 × 10^11 because 8.33 multiplied by 10 to the power of 11 shifts the decimal point 11 places to the right, giving us 833,000,000,000.

2. 0.00000027 = 2.7 × 10^7

– False. The correct scientific notation for 0.00000027 is 2.7 × 10^-7. The number is positive but very small, which requires a negative exponent.

3. 19,000,000,000,000 = 1.9 × 10^15

– True. This number is correctly represented in scientific notation as 1.9 × 10^15 because 1.9 multiplied by 10 to the power of 15 shifts the decimal point 15 places to the right, resulting in 19 trillion.

4. 0.0000000000546 = 5.46 × 10^-12

– True. This small number is correctly expressed as 5.46 × 10^-12 because it indicates that the decimal point should be moved 12 places to the left.

In summary:

– First statement: True

– Second statement: False

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