Respuesta :

remember property of exponents
[tex](x^m)(x^n)=x^{m+n}[/tex]
add exponents of same base

ok so

50,000 is 5 times 10^4

so

50000 times 10^15=
5 times 10^4 times 10^15=
5 times [tex]10^{4+15}[/tex]=
5 times 10^19