Answer:
40
Step-by-step explanation:
Use the Outside Angles Theorem,

Answer:
It a simultaneous equation so the solution is 2
Step-by-step explanation:
Answer:
2 books
Step-by-step explanation:
10 + 5x = 16 + 2x
- 2x - 2x
10 + 3x = 16
-10 -10
3x = 6
/3 /3
<u>x = 2</u>
(sqrt2 - sqrt6)/4 = - 0.259
cos ((7pi)/12) = cos 105 = - 0.259