20:37 Ahmed is riding the elevator in a building. The building has floors above and below ground level. Ahmed uses the
expression below to describe his movement.
6+(-8)
Which statement could describe Ahmed's movement?
Ahmed started 6 floors above ground level, then he went down 8 tidors.
Ahmed started 6 floors above ground level, then he went up 8 floors.
Ahmed started 6 floors below ground level, then he went up 8 floors.
Ahmed started 6 floors below ground level, then he went down 8 floors.
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Choice A

Ahmed started 6 floors above ground level, then he went down 8 floors

The +6 or simply 6, is positive, so he's on the 6th floor to start. Then adding on -8, which is the same as subtracting 8, moves him down 8 floors.

6 + (-8) = 6 - 8 = -2 indicates he's 2 floors below ground level, so he's in basement level 2 (perhaps some kind of parking garage).

the answer is A.

Step-by-step explanation:

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