Respuesta :

we are given the expanded form and we need to write the standard form:
10 + 8x(1/10) + 3 x(1/100) + 9 x (1/1000)
So, that is:
10 + 0.8 + 0.03 + 0.009
= 10.839
ShìnshìàSabaku
10 + 0.8 + 0.03 + 0.009
= 10.839