This is for the first answer and to be honest just use Desmos if you don’t have a graphing calculator
Answer:
Step-by-step explanation:
Putting value of x = 1/2 in the equation
8x - 3/x
8(1/2) - 3(1/2)
= 4 - 3/2
= 2.5 or 5/2
Answer:
28.56
Step-by-step explanation:
6+10+ (3.14×8)/2
= 16 + 12.56
= 28.56 ft
We can use the Сosine formula to solve this problem.
<span>First we must find the third side (АС) of the triangle:
</span>

<span>
The smallest angle of the triangle lies opposite the smallest side, so we need to find m</span>∠C.

Now we can use Bradis's Table (I don't know the name in English, maybe Trigonometric Table?) to find m∠C:
m∠С = 38°42' = 38.7°
Answer: 38.7°
<span>I hope this helps</span>