Question

Add 7 x 10−6 and 2.1 x 10−5

Answer 1

To add 7 x 10^-6 and 2.1 x 10^-5, express both with the same exponent and then add to get 2.8 x 10^-5.

Step-by-step explanation:

To add 7 x 10⁻⁶ and 2.1 x 10⁻⁵, we need to express both numbers with the same exponent for the base 10. We can convert 7 x 10⁻⁶ to 0.7 x 10⁻⁵ to align with the exponent of the second number. Now, simply add 0.7 x 10⁻⁵ to 2.1 x 10⁻⁵ to get 2.8 x 10⁻⁵.