△JKL and △LMN are shown. There are two triangles, triangle JKL and triangle LMN with common vertex L. The angle KLJ and angle NLM are opposite angles. Side JK is congruent to side KL. Side LN is congruent to side LM. The measure of angle JKL is 72⁰.

What is m∠KJL?

m∠KJL = ˚

Astudent draws two parabolas on graph paper. both parabolas cross the x-axis at (-4, 0) and (6,0). the y-intercept of thefirst parabola is (0, –12). the y-intercept of the second parabola is (0-24). what is the positive difference between the avalues for the two functions that describe the parabolas? write your answer as a decimal rounded to the nearest tenth.

Find the roots of the polynomial function f(x) = x^3 + 2x^2 + x

The areas of two similar triangles are 72dm2 and 50dm2. the sum of their perimeters is 226dm. what is the perimeter of each of these triangles?