Question

Sameer woke up one morning and saw frost on the windows. It was -7°C outside. Later in the day, the frost melted. At 3 p.m. it was 2°C outside. Which expression represents the difference between the two temperatures?

Answer 1

Answer:

$d = 9$

Step-by-step explanation:

Given

$Morning = -7^{\circ}C$

$Afternoon = 2^{\circ}C$

Required

What represent the difference

The expression that represents the difference (d) are:

$d = |Morning - Afternoon|$

Substitute values for Morning and Afternoon

$d = |-7 - 2|$

$d = |-9|$

$d = 9$