Question

95 POINTS FOR AWNSER
Read this word problem.
In the morning, the temperature was
–
10°C. By the afternoon, it had risen to
–
2°C. What was the change in temperature from the morning to the afternoon?
To solve the problem, Luke subtracted
–
2–(
–
10) and came up with an answer of 8°C. Is Luke correct? Why or why not?

Answer 1

Answer:

$yes \: he \: is \: correct \\ \underline{\boxed{(\triangle{ \delta}) = 8}}$

Step-by-step explanation:

$change \: in \: temp. \: ( \triangle{ \delta}) = t_2 - t_1 \\ hence \to \\( \triangle{ \delta}) = (- 2) - (- 10) \\ (\triangle{ \delta}) = - 2 + 10 \\ (\triangle{ \delta}) = 10 - 2 \\ (\triangle{ \delta}) = 8$

Answer 2

Answer:

No

Step-by-step explanation:

Luke only does it mathematically, he didnt bothet to check first by following step by step explanation