Question

Plz help 10 point

Use fraction bars and the rules of dividing signed number (- 15/5)/3/5

A (-18/5)

B -9

C (-12/ 5)

D-5

Answer 1

D. -5

Explanation:

`(-(15)/(5))/((3)/(5))=(-15)/(3)=\boxed{-5}`

The compound fraction is easily simplified because both numerator and denominator have 5 in their denominator. Hence the ratio is the ratio of the numerators.

When an odd number of minus signs is involved in multiplication or division, the result is negative.