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100 POINTS HELP PLEASE You decide to study which dishwashing detergent removes dried on ketchup the fastest. Which of these would be considered a constant in the experiment?

A. Using 40 °C water
B. Altering the wash cycle length
C. Using different amounts of ketchup
D. Using different brands of dish detergent

1 Answer

3 votes

Should be A: 40 C water

Step-by-step explanation:

answered
User Mferly
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