Answer:
12x<180
14
Step-by-step explanation:
12x<180
x<180/12
x<15
Since x has to be less than 15, he took at most 14 people.
Answer:
Step-by-step explanation:
2+2
You add 2 to 2 3,4
Answer:
and 
Step-by-step explanation:
We are given that sin x+cos x=cos 2x
We have to solve the given equation for 

Because 








Tan x is positive in I and III quadrant
In III quadrant angle
replace by 
Therefore, 

Looking at the numbers, we can see that the differences are 72, 36, and 18. Notice that they are each factors of the next by the same constant 2.
18 * 2 = 36
36 * 2 = 72
There, it means that 18/2 will be subtracted from 20.
20 - 18/2
= 20 - 9
= 11
The next number in the sequence would be 11. Hope this helps!