Step-by-step explanation:

BC = 6 km
<u>/</u><u> </u> ACB = 34°
AC = ?
cos 34° = 
=> 0.829 = 
=> AC = 
=> AC = 7.23763570567
=> AC = 7 km
=> AC = 10 km
(nearest tenth)

<h3>Answer : 10 km</h3>

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The equation factors into (x+2)(x+6) = 0. The answers to this question are -2 and -6.
--8+4+6=2
Hope it helps :-)
<span><span>y = k *x
</span><span>
y=10 ; k=10
10 = 10*x
x = 10/10 = 1</span></span>
x =1