Answer:
d=1
Step-by-step explanation:
Factor d^2 - 2d - 8 into (d-4)(d+2)
Move -2/d+2 onto the other side, changing it into 2/d+2.
![\frac{-3d}{(d-4)(d+2)} +\frac{3}{d-4}+\frac{2}{d+2} = 0](https://tex.z-dn.net/?f=%5Cfrac%7B-3d%7D%7B%28d-4%29%28d%2B2%29%7D%20%2B%5Cfrac%7B3%7D%7Bd-4%7D%2B%5Cfrac%7B2%7D%7Bd%2B2%7D%20%3D%200)
Let the empty side equal zero.
Add 3/d-4 and 2/d+2
![\frac{5d-2}{(d+2)(d-4)}](https://tex.z-dn.net/?f=%5Cfrac%7B5d-2%7D%7B%28d%2B2%29%28d-4%29%7D)
Then add that to -3d.
![\frac{2d-2}{(d+2)(d+4)}](https://tex.z-dn.net/?f=%5Cfrac%7B2d-2%7D%7B%28d%2B2%29%28d%2B4%29%7D)
Multiply 0 by d+2 and d-4 to get 2d-2 by itself.
2d=2
d=1
I can't edit the equation, but it's d-4 althroughout the question. Sorry for being so slow.
Answer:
64
Step-by-step explanation:
960 divided by 15 is 64. The unit rate means one so you are trying to get it to 1 second so just do 15 divided by 15 which is 1, then 960 divided by 15 which is 64
Answer:
Step-by-step explanation:
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