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Dvinal [7]
2 years ago
12

Your little brother wants hot chocolate ot be 150 degrees, but you accidentally heated the water to 175 degrees. If after 5 minu

tes the temperature is 165 and the temperature in your house is 70 degrees, how long will your little brother have to wait to drink his hot chocolate?
Mathematics
2 answers:
attashe74 [19]2 years ago
7 0
<h3><u>Answer:</u></h3>
  • My little brother will have to wait for 12.5 minutes to drink his hot chocolate.
<h3><u>Step-by-step explanation:</u></h3>

We know that in 5 minutes, the temperature of the hot chocolate decreased by 10 degrees. We also know that the temperature is fixed at 70 degrees. Now, using the info given, let's solve!

  • => 5 minutes = 10 degrees decrease
  • => 1 minute = 2 degrees decrease
  • => 1 minute x 12.5 = 2 x 12.5 degrees decrease
  • => 12.5 minutes = 25 degrees decrease
<h3><u>Conclusion:</u></h3>

Therefore, my little brother will have to wait for 12.5 minutes to drink his hot chocolate.

Hoped this helped.

BrainiacUser1357

Ber [7]2 years ago
3 0

Answer:

12.5 minutes

Step-by-step explanation:

it takes 5 minutes to cool 10 degrees

after ten minutes it would be 20 degrees less

then after 2.5 minutes it would be 5 degrees less

so it would take you 12.5 minutes to get 25 degrees less

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Circumference of a circle - derivation

This page describes how to derive the formula for the circumference of a circle.

Recall that the definition of pi (π) is the circumference c of any circle divided by its diameter d. Put as an equation, pi is defined as

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d

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