3/30=9/v
3×3=9
30×3= 90
v=90
D = 14
1/6d + 2/3 = 1/4d - 1/2
2d + 4*2 = 3d - 6
2d - 3d = -6-8
-d = -14
d = 14
A. Is the answer
Hope this helped :)
Step-by-step explanation:
Hey there!!
Given,

Cross multiply.
15 = 2z
Therefore, z= 15/2
<em><u>Hope it helps</u></em><em><u>.</u></em><em><u>.</u></em>
I don't really know how to explain it to you but what I can tell you is that in 1 centigram there are 10 milligrams.