PLEASE HELP!! Determine if the given information would form a unique triangle, many different triangles, or no triangles. Explain your reasoning..

1) 18 in, 12 in, and 7 in

2) 14 mm, and 12 mm

3) 4 in, 5 in, and 2 in

4) 4 ft, 16 ft, and 1 ft​

you probably already have the answer but anyways it's b. 15.0

step-by-step explanation:

0.02

step-by-step explanation:

time of 9 192 631 770 periods of the radiation corresponding to the transition between the 2 hyperfine levels of the ground state of the caesium 133 atom at 0 k (but other seconds are sometimes used in astronomy)