**answer 3**

1,550,000,000=1.55×10⁹

**answer 2**

1.55 x 10^9 Explanation; Scientific notation is a way of writing very large or very small numbers. A number is written in scientific notation when a number between 1 and 10 is multiplied by a power of 10. For example, 1,550,000,000 can be written in scientific notation as 1.55 × 10^9.

**Answer 6**

a Explanation: Scientific notation relates to the number of decimal places that have exceeded the decimal place you are moving. so to get 1,550,000,000 you would move the decimal 1.55 nine times to the right

**Answer 8**

The correct way to write the given number is Explanation: Scientific notation is defined as the method of representing a number that is either very large or very small in decimal form. In this notation, the number is always written to the power of 10. For example: 35000 is written from 0.00035 is written In the question, we are given a value of 1,550,000,000. The scientific notation for the given numeric value will therefore be the correct way to write the given number is

**Answer 7**

The correct way to write the given number is Explanation: Scientific notation is defined as the method of representing a number that is either very large or very small in decimal form. In this notation, the number is always written to the power of 10. For example: 35000 is written from 0.00035 is written In the question, we are given a value of 1,550,000,000. The scientific notation for the given numeric value will therefore be the correct way to write the given number is

**Answer 10**

The correct way is 1.55 x 10^9

**Answer 5**

a.1.55x 109

Explanation: In the study of Physics and Mathematics, we sometimes see very large or very small numbers. In both cases, the number of digits to be written is very large. There is an easy and convenient way to write such numbers without having to write too many zeros, this method is known as scientific notation. In this case, we are using a power of 10: 1,550,000,000 = 1.55×109

**Answer 1**

1.55×10^9

**Answer 6**

a Explanation: Scientific notation relates to the number of decimal places that have exceeded the decimal place you are moving. so to get 1,550,000,000 you would move the decimal 1.55 nine times to the right

**Answer 10**

The correct way is 1.55 x 10^9