Can someone help me state the congruence that is needed to prove Triangle ABC is congruent to Triangle DEF using the given postulate or theorem. The photo is attached right here:

Write the expression in complete factored form. 5n_(c - 3) - n(c - 3) =

The boiling point of water at an elevation of 0 feet is 212 degrees fahrenheit (°f). for every 1,000 feet of increase in elevation, the boiling point of water decreases by about 2°f. which of the following represents this relationship if b is the boiling point of water at an elevation of e thousand feet? a) e = 2b - 212 b) b = 2e - 212 c) e = -2b + 212 d) b = -2e + 212

Atriangular field has sides of lengths 21, 39, and 41 yd. find the largest angle. (round your answer to the nearest degree.)