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kakasveta [241]
1 year ago
10

An elevator went up 15 floors, down 9 floors, up 11 floors and down 19 floors. Find the net change

Mathematics
2 answers:
mariarad [96]1 year ago
8 0

Answer:

The net change would be -2.

Step-by-step explanation:

The upward change of elevator is represented by positive sign while the downward change represented by negative sign.

Given,

First the elevator goes up 15 floors,

change = + 15,

Then it goes 9 floors down,

change = -9,

Then it goes 11 floors up,

Change = + 11,

Finally, it goes 19 floor down,

Change = - 19

So, the net change = sum of total changes = 15 - 9 + 11 - 19 = -2

Slav-nsk [51]1 year ago
3 0
15u + 11u - 9d - 19d = -2d
It went up 26, down 28, a net change of down 2.
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