You need to put all the x's in one side...for that you'll have to subtract -4x to the other side and solve >>>>> 6=-4x+6x-8x=2>>>>>>6=-6x+2>>>now you should get something like this. now you gotta subtract the 2 to the other side and get 4=-6x
Answer:
d) 86.2 degrees
x = 86.20°
Attached is the image used in the question;
Step-by-step explanation:
Applying the law of cosine;
Cos C = (a² + b² - c²)/2ab
Where;
Angle C = x
c = 13 ft
b = 9ft
a = 10ft
Substituting into the equation;
Cos x = (10² + 9² - 13²)/(2×10×9)
Cos x = 0.0667
x = cos⁻¹(0.0667)
x = 86.20°
Apothem- 6.928
Area (rounded)- 166.3