B. 25 Km. The measure of BC is 25 km.
The easiest way to solve this problem is using the cosine theorem c = √a²+b²-2ab*cos A.
BC = √AC²+AB²-2(AC)(AB)*cos A
BC = √(21km)²+(14km)²-2(21km)(14km)*cos 89°
BC = √441km²+196km²-588km²*(0.017)
BC =√637km²-10.26km²
BC = √636.74km²
BC = 25.03km ≅ 25
Answer:
x= 6, -6
Step-by-step explanation:
Move the x onto the left side of the equation and solve.
Hope this helps! Brainliest please!
<em>Saffron</em>
Answer:
$578.60
Step-by-step explanation:
This is because:
$231.55 x 12 = 2778.60
2778.60 - 2200 = $578.60
Answer: 47 degrees Celsius is 116.6 Fahrenheit
Step-by-step explanation:
Answer:
The answer is 4.
Step-by-step explanation:
The value of a in ax^2 - 40x + 109 = 0 when one solution to the quad equation is x = 5 + 3 over 2i is 4.
