The result of (250 x 10^-6) - (7 x 10^-5) is?

To solve the expression (250 x 10^-6) - (7 x 10^-5), it's important to express both terms with the same exponent for the base of 10.

Start by adjusting the second term, 7 x 10^-5, to match the exponent of the first term, which is -6. This can be accomplished by converting 7 x 10^-5 to a form with a power of 10^-6:

7 x 10^-5 = 7 x 10^-5 x (10^1 / 10^1) = 70 x 10^-6.

Now the expression looks like this:

(250 x 10^-6) - (70 x 10^-6).

Next, combine the coefficients while maintaining the same power of 10. You subtract 70 from 250:

250 - 70 = 180.

Therefore, the result is:

180 x 10^-6.

This confirms that the correct answer is indeed 180 x 10^-6, which directly corresponds with one of the options provided. It's also crucial to perform the operation in the correct order and ensure that both terms are aligned in terms of their exponential notations for an accurate result.