1.275 is the correct answer im sure
(x - 4)(2x + 3)
Using foil:
2x^2 + 3x - 8x - 12
Simplify.
2x^2 - 5x - 12 is the product after using FOIL.
All triangles have a total of 180° in them.
So to find x, simply take 50° and 100° from 180°:
x = 180 - 100 - 50
= 30°
So x = 30°, and thus option D
6 + 5 = 11
5 + 6 = 11
11 - 5 = 6
11 - 6 = 5
hope this helped!