Answer:
55.4
Step-by-step explanation:
The sum of the angles of a triangle is 180
If we have a right triangle, one angle is 90
The other two angles must add to 90 degrees
Let the unknown angle be x
34.6 + x = 90
Subtract 34.6 from each side
34.6+x-34.6 = 90-34.6
x =55.4
7x^2 -5x + 4
5x^2 – 6x+2
- (-2x^2 - x - 2)
We got 5x^2 - (-2x^2) = 5x^2 + 2x^2 = 7x^2
-6x - (-x) = -6x + x = -5x
2 - (-2) = 2+2 = 4
So the equation would be 7x^2 -5x + 4
Hope this help :3
(A) 1(B) 3 (C) 2(D) 4
