If ABC is an isosceles triangle, and B is the vertex angle, AB = 20x-2, BC = 12x +30, and AC=25x, find x and the measures of the side of the triangle.

Aportion of a hiking trail slopes downward at about an 84° angle. to the nearest tenth of a flot, what is the value of x, the distance the hiker traveled along the path, if he has traveled a horizontal distance of 120 feet? a. 143.3 b. 12.5 c. 120.7 d. 130.2

How many sides does a regular polygon have if each exterior angle measure is 45 degrees explain your answer, i really don't understand this.

What number line represents the solution set for the inequality -1/2 greater than or equal to 4