Answer:
C. 50 degrees.
Step-by-step explanation:
The angles of the triangle add up to 180. So the remaining angle is 50.
It cannot be factored, so it is prime.
Let's check the dot product .
v.w = 5(4)-2(10) = 20 -20 =0
So the dot product is not 20 . And since the dot product is zero, so they are perpendicular.
And the y component of w is 10.
So correct options are first and third .
If x = 8, then the factor is (x - 8); likewise, if x = -5, then the factor is (x + 5). FOIL those together and get B