we know that
the number [tex] 39 [/tex] in expanded form is equal to
[tex] 39=3*10+9*1 [/tex]
so
in words
the number [tex] 39 [/tex] has [tex] 3 [/tex] tens and [tex] 9 [/tex] ones
the [tex] 3 [/tex] would be the tens place, and the [tex] 9 [/tex] would be in the ones place
therefore
the answer is
the value of the digit, of number, [tex] 9 [/tex] in the problem, is one, which is the value of place value
