2. (4a - 8b + 12c) (-5/2) Simply using distributive property and combining like terms

-10a + 20b - 30c

Step-by-step explanation:

(4a - 8b + 12c)(-5/2)

=(4a + - 8b + 12c)(-5/2)

=(4a)(-5/2) + (-8b)(-5/2) + (12c)(-5/2)

=-10a + 20b -30c

(Also Mathpapa is great for this kind of problems and Mathw*y is also a good one I use those two all the time they both saved me so many times)

False

the two smaller sides have to be bigger than the largest side to connect

9 + 7 = 16 and 16 is not bigger than 16 so 9,7,and 16 cannot form a triangle

Hope this helps

Step-by-step explanation: