The correct name is the right triangle
Answer:

Step-by-step explanation:
In a given triangle, the sum of every angle is always
. Here, we are given a right angle (
), as well as another
angle. Simply subtracting from 180 will give us the answer.

Answer:
(D) Each year,the machinery loses a value of 4,500
When it is 3 years old,it is worth a little over 35K ,and when it is 6 years old,its worth about 22K.
This info means A,C and B is wrong b/c it loses too little value per year.
(a-b)²=(a²-2ab+b²)
3(x-2)²-2(x-1)
=3(x²-4x+4)-2(x-1)
=3x²-12x+12-2x+2
=3x²-14x+14
Answer: 3x²-14x+14
If the question is 3*2/3=2+N/3
N=0
If the question is 2/3=2+N/3
N=-4