Answer:
-3
Step-by-step explanation:
It would just be -12+9=-3.
There is a not so well-known theorem that solves this problem.
The theorem is stated as follows:
"Each angle bisector of a triangle divides the opposite side into segments proportional in length to the adjacent sides" (Coxeter & Greitzer)
This means that for a triangle ABC, where angle A has a bisector AD such that D is on the side BC, then
BD/DC=AB/AC
Here either
BD/DC=6/5=AB/AC, where AB=6.9,
then we solve for AC=AB*5/6=5.75,
or
BD/DC=6/5=AB/AC, where AC=6.9,
then we solve for AB=AC*6/5=8.28
Hence, the longest and shortest possible lengths of the third side are
8.28 and 5.75 units respectively.
Answer: 4). 35,56,89
Step-by-step explanation: for a triangle to be acute all three angles have to measure below 90 degrees
20. B
21. B
22. A
23. C
24. A
25. A
Those should be right? Let me know if you need an explanation.
Red= 5 shirts
Blue=3 shirts
Green=2 shirts
White=4 Shirts
