Answer:
D
Step-by-step explanation:
a number expressed in standard form is
a × [tex]10^{n}[/tex] : 1 ≤ a < 10 and n is an integer
given
(7.5 × [tex]10^{7}[/tex] )(2 × 10³)
= 7.5 × 2 × [tex]10^{(7+3)}[/tex]
= 15 × [tex]10^{10}[/tex]
= 1.5 × [tex]10^{1}[/tex] ×[tex]10^{10}[/tex]
= 1.5 × [tex]10^{(1+10)}[/tex]
= 1.5 × [tex]10^{11}[/tex]
