Answer:
the side length is 8
Step-by-step explanation:
The formula is 1/2 x ( a + b ) x h
A and b are the top and bottom sides and h is always the perpendicular height.
Now replace the variables...
1/2 x (6 + 14 ) x 8.4
And then...
1/2 x 20 x 8.4 which will give you 84cm^2
Hope this helps! Anymore questions let me know :)
Answer:
x = -1/3 and x = 4 choose 4
Step-by-step explanation:
3x2 + 11x – 4= 0
...
3xx - 12x + x - 4 = 0
3x(x -4) + x - 4 = 0
(x-4)(3x + 1) = 0