Y=-4x²+4x-1 this quadratic equation is of the form ax² + bx + c
and its discriminante is ( Δ = b²- 4ac)
:
So Δ = b² 4ac ==> (4)² - 4(-4)(-1)==> (16) -16 = 0
When Δ = 0, the parabola intercept x=axis in one & only one point
And the x-intercept = -b/2a = (-4)/[2.(-4)] ==> x = 1/2
Answer:
$21
Step-by-step explanation:
Sqrt of 96 is 9.8 and the sqrt of 8 is 2.8
9.8 divided by 2.8 is 3.5
If you don't want to solve it using decimals then:
Sqrt of 96 is 9 and the sqrt of 8 is 2
9 divided by 2 is 4.5
If you want to estimate it then:
Sqrt of 96 is 10 and the sqrt of 8 is 3
10 divided by 3 is 3.3
It all depends on whether the question wants it exact to the decimal, to the 1st number place or estimated but I think the first option of 3.5 is your best bet.
Hope that helped :-)
y + 6 = -1/6 ( x - 5 )
That is point-slope form. :) (its called something like that)
6x-y=4 is the same as y=6x-4 the slope of that line is 6, so a perpendicular line would be -1/6.
