Answer:
53°
Step-by-step explanation:
17² = 18² + 20² - 2(18)(20) cos Q
289 = 324 + 400 - 720 cos Q
289 = 724 - 720 cos Q
-435 = -720 cos Q
0.6042 = cos Q

Q = 52.83
Answer:
33.33
Percentage Calculator: 120 is what percent of 360? = 33.33.
<span>(2d - 5)(2d - 4) = 4d^2 - 2d x 4 - 5 x 2d + 20 = 4d^2 - 18d + 20
Answer is B
Hope it helps! </span>
Answer:
12 is 52 i think. i am not sure about 11.
Step-by-step explanation:
im so sorry i know 11:(
I hope this helps on 12 tho