I'm guessing 9.1 is a typo and it's suppose to be 9.0. In that case, the answer is D
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°
Answer: (v - 9)^2 - 81
Step-by-step explanation: Use the formula (b/2)^2 in order to create a new term to complete the square.
Hope this helps! :) ~Zane
Answer:
81 is the right answer of your question
The following scenarios that describes the surface area of a figure would be Painting the walls of a wooden toy chest and Frosting a cake for a birthday because they both talk about the surface of something!
I hope this helped! Mark me Brainliest! :) -Raven❤️