A triangle is rotated 90° about the origin. Which rule describes the transformation? O(x, y) (-X, -y)
O(x, y) → (-y, x)
O (x, y) - (-y, -x)
(x, y) - (y, -x)

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19.

step-by-step explanation:

you add the 9 in the tens column since it is a single digit and 9 plus zero is 9 so it is 19

10.416 m/s

step-by-step explantion:

distance=100m

time= 9.6s

average speed=100/9.6

=10.416 m/s