10) If two lines with equations a¹x + b¹y + c¹ = 0 and a²x + b²y + c² = 0 are parallel then show that a¹b² = a²b¹. plz help me !!​

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.

Which statement best explains why ben uses the width hi to create the arc at j from point k

What is the measure of angle x? answer