Mathematics

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News:
October 2020 - we help students and teachers with materials with examples from mathematics, physics, and electro - materials for distance teaching forms due to the ongoing COVID-19 pandemics.
March-April 2020 - we were hopelessly overwhelmed by math problems from our users (the first lockdowns due to COVID-19), and we managed to solve them all during the summer holidays.
Q1 2021 - we are tired of the year-long lockdown and closed schools. There was plenty of online distance learning. You certainly learned less than at school when you interact with your teacher and classmates.

• The temperature 12
  The temperature of a liquid was 25°C before it was warmed at a rate of 10°C per minute for 5 minutes. It was then cooled at 3.5°C per minute for 6 minutes. What was the temperature of the liquid after cooling?
• Lower temperature
  The level of temperature of the liquid in a thermometer is 24.32°C lower than the boiling point of water. What is the thermometer reading? Show your answer by drawing and shading the thermometer.
• Jacob
  Jacob is baking chocolate cookies. The recipe uses 2/8 of a cup of sugar to bake a batch of cookies. If Jacob wants to make one-half of a batch. How many cups of sugar does he need?
• A map 3
  A map is drawn to a scale of 1 : 25 000. This scale can be expressed as 1 cm represents n km. Find n.
• Centre of the hypotenuse
  For the interior angles of the triangle ABC, alpha beta and gamma are in a ratio of 1: 2: 3. The longest side of the AB triangle is 30 cm long. Calculate the perimeter of the triangle CBS if S is the center of the side AB.
• Two cakes
  Two cakes were each cut into 8 slices. Maria ate   1/8 of the chocolate cake and 1 slice of carrot cake. Julia ate  1/2 of the carrot cake. Mark ate 1 slice of each. Thomas ate 3 slices of chocolate cake. How many slices were left?
• Petra's test
  The answer will be given 8 marks, and the wrong answer will be deducted 3 marks. The total number of marks obtained by the school is 36. If Petra answered six questions correctly,   how many questions were answered incorrectly by the student from the scho

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