< A + < B + < C = 180
13.5 + 63.9 + < C = 180
< C = 102.6
Answer: its model, graph, and scale
Step-by-step explanation:
19.7989898732 or to simplify it 19.79
Step-by-step explanation:
7
x - (k+2)x + 4
Since the roots are equal, b^2 - 4ac =0
a =x, b=k+2, c =4
(k+2)^2 - 4(1×4) =0
K^2 + 4k + 4-16 =0
K^2 +4k - 12=0
K^2 +6k - 2k - 12 =0
K(k + 6) - 2(k +6)=0
(k-2)(k +6) =0
K =2 or - 6
