3. WEATHER On a cold January day,
Mavis noticed that the temperature
dropped 21 degrees over the course of the
day to -9°C. Write and solve an equation
to determine what the temperature was
at the beginning of the day.
SET UP AN EQUATION AND SOLVE

Question

07-04-2020
Mathematics

contestada

3. WEATHER On a cold January day,
Mavis noticed that the temperature
dropped 21 degrees over the course of the
day to -9°C. Write and solve an equation
to determine what the temperature was
at the beginning of the day.
SET UP AN EQUATION AND SOLVE

Respuesta :

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egrigg2010 egrigg2010 · Answer 1 · 2020-04-07T18:44:19+02:00

Answer: -9 + 21 = t t = 12°C.

Step-by-step explanation: For this problem lets have t be equal to the original temperature in the beginning of the day. The equation -9 + 21 = t represents this situation because it states that if we add the degrees that dropped to the current degrees it will give us our original degrees.

Solve.

-9 + 21 = t (Simply add -9 + 21) -9 + 21 = (+12)

12 = t

So, the original degrees in the beginning of the day was 12°C.

3. WEATHER On a cold January day, Mavis noticed that the temperature dropped 21 degrees over the course of the day to -9°C. Write and solve an equation to determine what the temperature was at the beginning of the day. SET UP AN EQUATION AND SOLVE

Respuesta :

Otras preguntas

3. WEATHER On a cold January day,
Mavis noticed that the temperature
dropped 21 degrees over the course of the
day to -9°C. Write and solve an equation
to determine what the temperature was
at the beginning of the day.
SET UP AN EQUATION AND SOLVE