Answer:
The solution for k is the interval (-3.5,1.5)
Step-by-step explanation:
we have
![}[1-k]x^{2}+3x-(3+k)=0](https://tex.z-dn.net/?f=%7D%5B1-k%5Dx%5E%7B2%7D%2B3x-%283%2Bk%29%3D0)
we know that
If the discriminant is greater than zero . then the quadratic equation has two real and distinct solutions
The discriminant is equal to
In this problem we have
a=(1-k)
b=3
c=-(3+k)
substitute
so
solve the quadratic equation by graphing
The solution for k is the interval (-3.5,1.5)
see the attached figure
To solve both of these expressions, we want to add or subtract from left to right.
For the first one, we can rewrite it as:
8-6-9
=2-9
=-7
The second one we can rewrite as:
5-7+9+8-4
=-2+9+8-4
=7+8-4
=15-4
=11
Hi!! I hope youre having a great day!
Answer:
The answer is 2000 yuan.
Step-by-step explanation:
Devise a proportion for this, and then cross-multiply. I believe that is the easiest way.
Answer:
y=3/2x+2
Step-by-step explanation:
y-y1=m(x-x1)
m=3/2
y-8=3/2(x-4)
y-8=3/2x-12/2
y-8=3/2x-6
y=3/2x-6+8
y=3/2x+2
