For last

Last week, the temperature varied a total of 17 degrees over the day. If the high for the day was 10 degrees, what was the low for the day (write a number sentence and solve it. )

Correct answer:

t2 =  -7 °C

Step-by-step explanation:

t1=10 °C Δ=17 °C  t2=t1Δ=1017=7°C

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