B²-4ac?
<span>5x²+7x-6 = 0 </span>
<span>the form is ax²+bx+c = 0 </span>
<span>a=5, b=7, c=-6 </span>
<span>The discriminant D = b²-4ac </span>
<span>= 7² - 4(5)(-6) = 49 + 120 </span>
<span>= 169 </span>
X² - 2x + y² + 6y - 6 = 0
x² - 2x + y² + 6y = 6
(x² - 2x + 1) + (y² + 6y + 9) = 6 + 1 + 9
(x - 1)² + (y + 3)² = 16
center: (h, k) = (x, y) = (1, -3)
radius: 4
If 21 out of 24 students did their homework, 3 out of 24 did not do it.
This written as a fraction is 3/24 and can be reduced to 1/8.
This in decimal form is 0.125 .
To convert the decimal to a percent, multiply by 100 and put a percent sign at the end of the number.
0.125 × 100 = 12.5
12.5%
(3)-(6)
= -3
this is the answer
So.. if you notice the picture below.. .the length is that much
thus
take the derivative of A, zero it out, and then check the critica points for any maxima by using the first-derivative test