Respuesta :

7.02 x 10-8 is in scientific notation

Answer: -7.02x10⁻⁸

Step-by-step explanation:

(3.8x10⁻⁹)-(7,4x10⁻⁸)=

10⁻⁹(3.8x10⁻⁹⁻⁽⁻⁹⁾-7.4x10⁻⁸⁻⁽⁻⁹⁾=

10⁻⁹(3.8x10⁻⁹⁺⁹-7.4x10⁻⁸⁺⁹)=

10⁻⁹(3.8x10⁰-7.4x10¹)=

10⁻⁹(3.8x1-7,4x10)=

10⁻⁹(3.8-74)=

-70.2x10⁻⁹=

-7.02x10⁻⁸