Question

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

Answer 1

Answer:

D.

Step-by-step explanation:

The given expression is

$(19 \times10^{5})-(5 \times 10^{4})$

Here we just extract the common factor:

$(19 \times10^{4}10)-(5 \times 10^{4})\\10^{4}(19(10)-5)\\10^{4}(190-5)\\185 \times 10^{4}$

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:

$185 \times 10^{4}=1.85 \times 10^{6}$

Therefore, the right answer is D.

Answer 2

Answer:

1850000

scientific notation:

= 1.85 × 10^6

Step-by-step explanation:

Don't have one sorry