12 divided by 30 and you get .4 which is the same as 40%
Answer:
y = -7
Step-by-step explanation:
I wrote how I did
and the steps
I could better help if I knew the question.....
umm.. sure
Step-by-step explanation:
First of all let x-1=0
x=1
Therefore,
P(x)=2x^4+4x^3-7x^2-kx+9
P(1)=2(1)^4+4(1)^3-7(1)^2-k(1)+9
2(1)+4(1)-7(1)-k+9=0
2+4-7-k+9=0
15-7-k=0
8-k=0
-k=-8
Therefore,k=8