Which of the following sets of points are reflections of each other across the origin?

(-6, -9) → (-6, -9)

(-6, -9) → (6, 9)

(-6, -9) → (-6, 9)

(-6, -9) → (-9, -6)

What is the circumference of the pie

Car a and car b were in a race .the driver of car b claimed that his car was twice as fast as car a

Julie begins counting backwards from 1000 by 2’s and at the same time tony begins counting forward from 100 by 3’s.   if they count at the same rate, what number will they say at the same time?