Which situations can be represented by the expression -75 + 75?
A Last night Sarah read 75 fewer pages than the night before. She reads
B A diver is 75 feet below the surface of the water and then comes up to
the surface.
C Peter adds 75 milliliters of water to a test tube containing 75 milliliters.
D Amber owes the phone company 75 pages tonight.
B A diver is 75 feet below the surface of the water and then comes up to
the surface.
C Peter adds 75 milliliters of water to a test tube containing 75 milliliters.
D Amber owes the phone company Last night Sarah read 75 fewer pages than the night before. She reads
75 pages tonight.
B A diver is 75 feet below the surface of the water and then comes up to
the surface.
C Peter adds 75 milliliters of water to a test tube containing 75 milliliters.
D Amber owes the phone company
geez - why repeat everything?
It's B no matter how many times you say it.
The situation that can be represented by the expression -75 + 75 is:
B. A diver is 75 feet below the surface of the water and then comes up to the surface.
To understand this, let's break down the expression.
-75 represents being 75 feet below the surface (a negative distance) and +75 represents coming up to the surface (a positive distance). When we add -75 and +75, the negative and positive values cancel each other out, resulting in a total distance of 0. In this case, the diver starts 75 feet below the surface and then rises up to the surface, ending at a level of 0 feet below the surface.