Question

Can someone explain to me how to get my answer

Evaluate and leave the solution in standard notation: (2 x 104)(5.1 x 102)
A. 10.2
B. 10,200,000
C. 1,200,000
D. 102,000

Answer 1

I am assuming that 104 and 102 mean 10^4 and 10^2
=2*10^4*5.1*10^2
=2*5.1*10^4+2
=10.2*10^6
=10200000
B.

Answer 2

Yes sorry , so just multiply straight across ?

Answer 3

Basically.

Answer 4

Thanks

Answer 5

No prob.