Question

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Ken predicts that the average temperature will be −5°C in December. If he predicts the temperature will rise 6°C in January and fall 3°C in February, which of the following equations can he use to find the sum of the temperatures for those months? Check all that apply.

A. [6 + 3] + 5 = 14
B. (–5) + [3 + 6] = –4
C. [(–5) + (–3)] + 6 = –2
D. 5 + [(–6) + (–3)] = –4
E. [6 + (–5)] + (–3) = –2
F. [(–5) + 6 ] + (–3) = 4

Answer 1

Given : Ken predicts that the average temperature will be −5°C in December. If he predicts the temperature will rise 6°C in January and fall 3°C in February,

To Find : which of the following equations can he use to find the sum of the temperatures for those months

[6 + 3] + 5 = 14

(–5) + [3 + 6] = –4

[(–5) + (–3)] + 6 = –2

5 + [(–6) + (–3)] = –4

[6 + (–5)] + (–3) = –2

[(–5) + 6 ] + (–3) = 4

Solution:

average temperature December  = - 5 °C

temperature will rise 6°C in January

=> average temperature  January  =  -5 + 6  = 1°C

fall 3°C in February,

=> average temperature February, = 1 - 3 = - 2°C

sum of the temperatures for those months = -5 + 1 - 2

= - 6°C

None of the Given options are correct

Looks some mistake in Data

if Question is

Ken predicts that the average temperature will be −5°C in December. If he predicts the temperature will rise to  6°C in January and fall to 3°C in February,

sum of the temperatures for those months  = (-5)  + 6 + 3     = 4°C

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