Question

1. (4x10⁻²)x(3x10⁵)=
2. (4x10⁻¹⁰)/(2x10⁵)=
3. (5x10⁻⁵+7x10⁻⁴)x(4x10⁸)/(5x10³)=

Answer 1

Explicación:

1-. (4×10^-2)×(3×10^5)

(4×3)×(10^-2×10^5)

12×10^-2+5

12×10^3=1,2×10^4=12000

2-. (4×10^-10)/(2×10^5)

simplifica: 2/10^15

2x10^-15

3-.(5×10^-5+7×10^-4)×(4×10^8)/(5×10^3)

((5/10^5 + 7/10^4) x4x10^5)/5

(20+280)/5

60