Answer:
6.07/212
Step-by-step explanation:
Step 1: Convert
, which is in radians into degrees. To convert it multiply by 

900/12
75
Step 2: 75 degrees isn't on the unit circle but 45 degrees and 30 degrees is. Since 45 + 30 = 75 you can use the cosine of 45 and 30 to find the exact value
cos45 = 
cos30 =
Step 3: Add the cos45 and cos30 to get cos5pi/12

Hope this helped!
Hey again!
i don't know if i am doing this correctly but i will give it a go
179 - 143.20 = 35.8
179 / 35.8 = 5
so this would mean from 179 to 143.20 their is a 5% discount
Hope This Helps!
Answer: 5 (8-9x)
Step-by-step explanation:
25 x 2 - 45 x -10
50 - 45 x -10
40 - 45x
Answer: Perpendicular because the second line has a 2/3 slope and starts at 4.