Rounding or compatible numbers to estimate the sum 620+107=
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y =
Since this line is parallel to the line to be found, both have the same slope:
Coordinates: ( - 9 , - 2 )
y - ( -2 ) = ( x - ( -9 ) )
y =
Since this line is parallel to the line to be found, both have the same slope:
Coordinates: ( - 9 , - 2 )
y - ( -2 ) =
The chance that any given bulb is on is equal to 1/2. The chance that all twenty bulbs are on at the same time is 