The triangles shown below must be congruent . true or false ?

While scuba diving, rajeev dove to a depth of 12.6 feet below the surface of the water and then descended another 8.7 feet. what expression can be used to find rajeev's new position? 12.6 – 8.7 –12.6 – 8.7 –12.6 – (–8.7) 12.6 – (–8.7)

Anyone know? will mark brainliest if you're correct!

Solve each equation using the quadratic formula. find the exact solutions. 6n^2 + 4n - 11