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please help ♡♡♡♡♡could 13.5 cm, 80cm and 3.5 cm be the side length of a triangle

Solve the triangle. a = 21°, c = 105°, c = 5

Which equation shows the quadratic formula used correctly to solve 5x2 + 3x -4 0 for x? cos -3+ v (3) 2-4() 2(5) 3+ |(3)² +4() 205) 3+ (3) 2-4() -3+ v (3)² +4()

The median am of triangle ∆abc is half the length of the side towards which it is drawn, bc . prove that triangle ∆abc is a right triangle, and find angle mac and abm