The x-intercept the value of x when y=0, i.e.
y=x^2+6x-17=0
The expression does not have rational factors, so we will resort to the quadratic equation to solve for x.
A=1
B=+6
C=-17
x=(-B +/- sqrt(B^2-4AC) ) / (2A)
=(-6 +/- sqrt(36+68) )/ (2)
=-3 +/- sqrt(26)
or
x=-3+sqrt(26) or -3-sqrt(26) [intercepts of x]
The y-intercept of the equation is solving for y after setting x to zero.
i.e.
y=x^2+6x-17 when x=0
I'll leave this last task for you so as not to bore you!
Answer:
16.66666667
Step-by-step explanation:
=12+10.66666667-6
=22.66666667-6
=16.66666667
Answer:76.65
Step-by-step explanation:
First, you write 36.5 times 2.10
Then, multiply them.
That equals 76.65
Answer: A) 23.5%
Explanation: 340-260= 80
80/340=0.2352x100=23.5
Area of ABC : AB*AC/2
the maximum of the parabola is reached at x=-4/(2*(-1))=2 hence A is at (2,0) and B is at (2,(-2)^2+4*2+C)=(2,12+C)
C is the second root (x-intersect), which we can find :
determinant1 : D=16-4*(-1)*C=4(4+C) thus the second root is at x=
Hence the area of the triangle is
hence
.
We remark that
Hence 4+C=16 thus
C=12