Question

Find (18 × 10^6) + (5 × 10^4).

A. 1.805 × 10^7

B. 1.8005 × 10^7

C. 1.805 × 10^6

D. 1.8005 × 10^6

Answer 1

A.1.805 × 10^7

Explanation:

(18 × 10^6)+(5 × 10^4)

Take 10^4 in common,

=10^4(18 × 10^2 + 5)

=10^4(1800+5)

=10^4(1805)

=10^7 × 1.805

=1.805 × 10^7

Answer 2

Can you post photo please? I cant understan ehats this