Step-by-step explanation:
B because the straight angle must be 180°
Answer:

Step-by-step explanation:

» Collect second degree terms (x² coefficients) together and first degree terms (x coefficients) and constants

The length would be 18 inches and the width would be 9 inches since the length is twice its width and to find perimeter you do length x 2 and width x 2 and add it together so 18x2 = 36 and 9x2 = 18. 36 + 18 = 54
<u>Answer:</u>
<h2>
14.21 cm</h2>
<u>Explanation:</u>
you mean the hypotenuse* lol
the hypotenuse = √(11²+9²)
the hypotenuse = √(121+81)
the hypotenuse = √(202)
the hypotenuse ≈ 14.21 cm