Question

Write the integer that represents the opposite of each situation. Explain what zero means in each situation.

Answer 1

Answer:

The correct answers are:

a) -100

b) +32

c) +25

Step-by-step explanation:

a) The integer that represents '100 feet above sea level' is +100. The opposite integer is -100. In this case zero means sea level, so:

• above sea level the quantities are positive
• below sea level the quantities are negative

b) The integer that represents '32°C below zero' is -32. The opposite integer is +32. In this case zero means 0°C which is the water melting temperature (temperature when water passes from solid to liquid), so:

• above zero the quantities are positive

• below zero the quantities are negative

c) The integer that represents 'a withdrawal of $25' is -25. The opposite integer is +25. In this case zero means no entrances and no withdrawals, so:

• entrances are positive
• withdrawals are negative