In the morning, Harrison checked the temperature outside to find that it was 12°F. Later in the afternoon, the temperature rose 12°F. Write an expression representing the temperature change. What was the afternoon temperature?

Original problem posted: 12°F + 12°F = 24°F

Corrected problem from the comments: -12°F + 12°F = 0°F

Step-by-step explanation:

Original Problem statement:

"In the morning, Harrison checked the temperature outside to find that it was 12°F. Later in the afternoon, the temperature rose 12°F. Write an expression representing the temperature change. What was the afternoon temperature?"

Morning temperature: 12°F

Change in temperature: +12°F

Afternoon temperature: 12°F + 12°F = 24°F

Corrected Problem statement:

"In the morning, Harrison checked the temperature outside to find that it was -12°F. Later in the afternoon, the temperature rose 12°F. Write an expression representing the temperature change. What was the afternoon temperature?"

Morning temperature: -12°F

Change in temperature: +12°F

Afternoon temperature: -12°F + 12°F = 0°F

54 kilometers per hour

step-by-step explanation:

according to rules:

1 km = 1000 meter

which means that 1 meter = 1/1000 km

1 hour = 3600 second [ as 1 hour = 60 min = 60 *60 seconds ]

which means that 1 second = 1/3600 hour

therefore, 1 kilometer/hour =

thus to convert 15 meter per second to kilometer per hour, we multiply 15 to 3.6 kilometer/hour.

15 meter/second=   which is the required answer.