Take out the GCF of -4d, which creates
-4d(d^2+7d-1)
Doesn't seem right... tell me if I messed up anybody... if not, there's your answer.
Answer:
-4/3 is the answer :)
Step-by-step explanation:
12 : 19...................
Basically, this is saying that 80% of (x) = 2 so you have know what the whole would be. It would be 2.5 because 80% of 2.5 is 2. So because you are subtracting 7 from v to get 2.5, you have to add 2.5 to 7 to get v. V=9.5