Answer:
0.3
Step-by-step explanation:
Answer is B (hope this helps!)
Answer:
<h2>it's b</h2><h2>you can go with it</h2>
...........
X = (12 +- sqrt (144 -4(7)(3))/14
x = (12 + - sqrt (144 - 84))/14
x = (12 + - sqrt(60))/14
x = (12 + - 2sqrt 15))/14
x = (6 + - sqrt 15) / 7
