Question

Between the time iko woke up and lunchtime, the temperature rose by 11. Then by the time he went to bed, the temperature dropped by 14.

Write an addition expression for the temperature relative to when iko woke up.

Answer 1

Answer:

11 - 14

Step-by-step explanation:

Let's call the temperature when iko woke up: T

Between the time iko woke up and lunchtime, the temperature rose by 11. This means that the temperature at that time was the previous one plus 11: T + 11

Then by the time he went to bed, the temperature dropped by 14. This means that the temperature at that time was the previous one less 14: T + 11 - 14

To compare this temperature to the initial temperature T, we have to subtract it: T + 11 - 14 - T = 11 - 14 = -3. This means that the temperature at the end of the day was 3 degrees less than at the beginning

Answer 2

The expression for the temperature relative to when iko woke up is t - 3

How to write and solve equation?

let

• The temperature when iko woke up = t

• Temperature between wakeup and lunchtime = t + 11

Temperature at bed time = t + 11 - 14

The temperature relative to when iko woke up = t + 11 - 14

= t - 3

This means the temperature at bed time is less than 3

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