Answer:
i think it is B
Step-by-step explanation:
i am not 100% sure
Because 6 * 8 + ( - 2 )* 24 = 48 - 48 = 0 , the vectora u and v are orthogonal ;
Two vectors are orthogonal if their dot product is zero.<span />
Just set it equal to zero and solve using the quadratic equation.
(3x+1)+(2x+4)=90
3x+1+2x+4=90
5x+5=90
5x=85
x=17
Answer:
17 obtuse triangle
Step-by-step explanation:
hope it helps
