They are right angles, supplementary means that they add up to 180. You can remember this because S in supplementary stands for S in straight line (which is 180 degrees. They are both right angles because 90 + 90 will equal 180.
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Answer:
it's a) the variable y represents the pounds of cookies sold in the $63 purchase
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Answer:
Step-by-step explanation:
-2x + 6 = -6
-2x = -12
x = 6
19. B.
20. J.
Hope this helps :P