Question

Someone help please :)

Answer 1

6.79 x 10⁶

Further explanation

Scientific Notation consists of 2 parts

1. the first part: the first digit followed by the decimal point

2. The second part: the power of 10 (the exponents).which shows the number of digits after the decimal point

To add/subtract, the exponents must be the same and then add/subtract the coefficient

• convert the largest exponent

`\tt 7.2* 10^6\rightarrow 72* 10^5`

• subtract the coefficients

`\tt =(72-4.1)* 10^5\\\\=67.9* 10^5\rightarrow 6.79* 10^6`