'3' is 5 /7 of the way from -2 to 5
5/7 th of the way from 7 to -8 is a = -3 5/7
= 2t^2 -20t -36 Bowl shaped parabola (due to positive coefficient of x^2) min occurs at t = - b/2a = - -20/(2*2) = 5
n = -80o
You are welcome ! Have fun.....
(3x + 5/6 )(3x + 5/6 )
= 9x^2 + 5 x + 25/36
Here it is....if you add the numbers, you will have your answer....
HAve you tried to draw a Venn Diagram yet? I'll post one shortly....
2020 2024 2028 2032 2036 2040 2044 2048 <====== count them
xy + 4x + 2y + 8 = 1
x (y+4) + 2y + 8 = 1
x = (-2y -7) / ( y+ 4) you cannot divide by zero.....so when y = -4 there is no solution for x
x/(x - 5) = 4/(x- 1) cross multiply , then solve the resulting quadratic
x( x-1) = 4 (x-5)
x^2 -5x +20 = 0 Use quadratic formula to solve for x (I changed it from 'c' to avoid confusion with the quad formula)
\(x = {-b \pm \sqrt{b^2-4ac} \over 2a}\)
