Aboy who is 3 feet tall can cast a shadow on the ground that is 7 feet long. how tall is a man who can cast a shadow that is 14 feet long? solve this problem by setting up a proportion. show your work.(p. 250, example 4)

Me solve this problem, and someone clearly explain to me how to solve it.1.) use the value of the discriminant to determine if the given trinomials has 2 real solutions, 1 real solution, or no real solutions.a.  x2  − 4x  − 7 = 0b. 4r2  + 11r  − 3 = 0c. 3m2  + 7 = 0d.  t2  + 2t  + 1 = 0

Atriangle with all sides of equal length is a/an triangle. a. right b. scalene c. equilateral d. isosceles

How do you determine if an ordered pair is a solution to a given equation?