Change 75 millimeters to decimeters. a. 75 dm b. 7.5 dm c. 750 dm d. 7,500 dm

1 millimeter = 0.01 decimeter, so we'd have to multiply whatever number of millimeters by 100 to get the number of decimeters.
We have 75 millimeters.
75 x 100 = 7500, since we have 1/100 decimeters per 100/100 millimeter.
Your answer is D.)
I hope this helps!