Which system of equations can be used to find the roots of the equation 4x5 - 12x4+x-5x3 - 2x?
ly=-4x + 12x² - 6x
y = 5x3 2x
(y=4x8 – 12x - 5x² + 8x
(y = 4x5 – 12x + 6x
b= -5x² + 2x
jy = 4x – 12x² + 6x
= 5x² – 2x

Find the measure of the interior angles of the following regular polygons: a triangle, a quadrilateral, a pentagon, an octagon, a decagon, a 30-gon, a 50-gon, and a 100-gon.

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

Anormally distributed data set has a mean of 176.3 and a standard deviation of 4.2. what is the approximate z-score for the data value of 167.9? 2.00 −2.00 8.4 −8.4