Can somone work this out step by step. i need to find x but cant figure out changing the formula around. i think i missed a step or 2 on class. can i get step by step . 1/2 + x/1 + 1/8 = 1/4

Figure abcd is a parallelogram. if point c lies on the line x = 2, what is the y-value of point c

Which of the expressions (on the photo document i inserted) together represent all solutions to the following equation? 8cos(12x)+4=-4 *the answer should be in degrees.* > i would like for someone to explain the process to find the solutions for this.

:24% of students in a class are girls. if there are less than 30 students in this class, how many students are there? how many girls are there?