What is the ratio of the circumference to the diameter for any circle? for example diameter is 8cm and circumference is 24cm

Determine whether the quadrilateral below is a parallelogram. justify/explain your answer (this means back it up! give specific information that supports your decision. writing just "yes" or "no" will result in no credit.)

Find the solution set of this inequality. enter your answer in interval notation using grouping symbols. |8x-4| ≤ 12

Write the slope-intercept form of the line that passes through the point (1, 0) and is parallel to x - y = 7. t