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

yes
no; 2.7 + 3.1 > 4.3
no; 4.3 + 2.7 > 3.1
no; 3.1 + 4.3 > 2.7

Answer this 30 points and brainliest!

Expresa commuter train leaves downtown sation and travels at a average speed of 55 miles per hour towards the north side sation, which is 50miles away. thirty minutes later, express commuter train #7 leaves north side and travels at a average speed of 35miles per hour towards downtown sation. at the moment the two trains pass each other, how far(in miles) is train #12 from the downtown sation and how long(in minutes) has the #12 train been traveling

What are the solutions of the equation? 16x^2 + 24x + 5 = 5 a. 1/4, 5/4 b. -1/4, -5/4 c. -1/4, 5/4 d. 1/4 , -5/4