Answer:
You add the purple numbers and it sums up to give you the blue number. That's what I noticed.
Most likely cot x = cos x / sin x , but i'm still learning this myself. I hope it helps :)
-23/17y < 12/7
y > 12/7 * - 17/23
y > - 204 / 161 or -1 43/161
Answer:
Remove 9 from triangle B to A
Step-by-step explanation:
Given
Three Triangles
A: 1,2,3
B: 7,8,9
C: 4,5,6
Required
Make their sum equal
First, we need to calculate the sum in each triangles;






Remove 9 from triangle B to A




At this point, we have:

<em>Hence, the solution is to remove 9 from B to A</em>
Because 2,4,6,8,10,12,14,16 are all even and 10 is even and 8 soo 16 is even.....