Is it possible to form a triangle with the given side lengths? If not explain why not. 2.7, 3.1, 4.3

a. yes
b. no; 2.7 + 3.1 > 4.3
c. no; 4.3 + 2.7 > 3.1
d. no; 3.1 + 4.3 > 2.7​

a=24; b=12

step-by-step explanation:

a/b=2: 1

a=2b

36/(1+2)=12

b=12

a=24

x = -4

step-by-step explanation:

- 20 - 4(x + 3) = 4x

=> -20 - 4x - 12 = 4x

=> - 32 -4x = 4x

=> -32 = 4x + 4x

=> - 32 = 8x

=> -32/8 = x

=> -4 = x

combine all like terms then its just a 2 step equation