You probably jsut need to use law of cosines in order to solve for angle A

or
Answer:
D:f(x) = x2 - 3x -10
Step-by-step explanation:
Answer:
24 mm squared
Step-by-step explanation:
3 x 4 x 1/2 = area of the triangle
4 x 3 = area of the rectangular top left
1 x 6 = area of the bottom rectangle
3 x 4 = 12 x 1/2 = 6
4 x 3 = 12
6 x 1 = 6
6 + 12 + 6 =24
The answer is 4x-6. Good luck! :D