Question

Find (19 × 105) − (5 × 104). A) 1.805 × 105 B) 1.805 × 106 C) 1.85 × 105 D) 1.85 × 106

Answer 1

1850000

scientific notation:

= 1.85 × 10^6

Explanation:

Don't have one sorry

Answer 2

D.

Explanation:

The given expression is

`(19 *10^(5))-(5 * 10^(4))`

Here we just extract the common factor:

`(19 *10^(4)10)-(5 * 10^(4))\\10^(4)(19(10)-5)\\10^(4)(190-5)\\185 * 10^(4)`

Then, we move the decimal point two spot to the left, that will increase our power in two, specifically the exponent will change from 4 to 6, due to the two spot movement of the decimal point:

`185 * 10^(4)=1.85 * 10^(6)`

Therefore, the right answer is D.