What would the perimeter of a triangle be if the side lengths were 5x+2, 3x-5, and x+10

True or false? many triangular shapes can be circumscribed about a given circle

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

Given the two similar triangles, how do i find the missing length? if a=4, b=5, and b'=7.5 find a'