<span>It will take 20 minutes. The fridge needs to cool down by 90-50=40degrees. The fridge cools at 2 degrees per minute, i.e. 40/2=20 minutes total.</span>
Question 1: D
Question 2:D
Question 3: C
Question 4: A
Question 5: D
Answer:
Actually Coordinator plane is called Cartesian plane to name and honor Rene Descartes who created and introduced the the coordinate system to show how algebra could be used to solve geometric problems.
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