Which two temperatures have a sum of 0°C ? a ; 2 degrees celsius and -2 degrees celsius
b ; 2 degrees Celsius and 2°C
c ; -2°C and -2°C
d ; 2°C and 0°C

walter needs to make at least 5 more cookies but no more than 40. 5 ≤ x ≤ 40

step-by-step explanation:

20 ≤ x + 15 ≤ 55

subtract 15 from all parts

20-15 ≤ x + 15-15 ≤ 55-15

5 ≤ x ≤ 40

this means how many more cookies he has to make

walter needs to make at least 5 more cookies, but no more than 40 cookies; 5 ≤ x ≤ 40

a

step-by-step explanation:

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step-by-step explanation: