Answer:
The answer is 22
Step-by-step explanation:
(3 • 5) = 15
7 + 15 = 22
22 is your answer
G(x)-f(x)=10x+2- (-8x+5)
=10x+2+8x-5
=18x-3
Add all of the interior angles to 1260. Then you simplify for x. After that you plug in what you found for X in the E expression.
It should be 0 because the only factor changing is the x value
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