What is the area of the parallelogram? Measurements:
21 cm 15 cm 20cm

Answer choices:
82cm2 30cm2 315cm2 420cm2​

The sum of two numbers is 86, and their difference is 20. find the two numbers

Which statements are true? check all that apply. the line x = 0 is perpendicular to the line y = –3. all lines that are parallel to the y-axis are vertical lines. all lines that are perpendicular to the x-axis have a slope of 0. the equation of the line parallel to the x-axis that passes through the point (2, –6) is x = 2. the equation of the line perpendicular to the y-axis that passes through the point (–5, 1) is y = 1.

This is about circle theorems. someone asap : (