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Simplify (0.3×105)÷(0.4×107)leavin...

Simplify (0.3×105)÷(0.4×107)leaving your answer in standard form

A.

7.5×104

B.

7.5×103

C.

7.5×102

D.

7.5×101

Correct answer is B

(0.3×105)÷(0.4×107)310×105÷410×107=3×104÷4×1063×1044×107=34×102=0.75×1027.5×103