Question

What the answer for a and b

Answer 1

^ means raised to the power of

a) 4,5 × 10^11

b) 3,5 × 10^3

a) = 5 × 9 × 10^3 × 10^7

= 45 × 10^3+7

= 45 × 10^10

= 4,5 × 10^11

b) = 7÷2 × 10^5 ÷ 10^2

= 3,5 × 10^5-2

= 3,5 × 10^3