# Mathematics

Is there a bad grade of**mathematics**for certification or exam?

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We consider mathematics to be a bearer of common sense, without which it is difficult in the next career to achieve success. Whether as a manager, programmer, judge, mason or electrician, you will make decisions every day, the quality of which will depend on your wisdom, maturity, concentration. The smartest and better decisions you make in life, the greater the potential for success in your personal and working life. This will help you with our portal with examples of mathematics with their solutions. If you are looking for math material, you are getting ready for a prize, a graduate, a monitor, a nationwide knowledge test is also right here. In addition to examples, we also offer online math calculators.

- Winch

The steel rope has a diameter of 6mm and a length of 20m. We are winding on drum width 60mm, starting diameter 50mm. What is the final diameter after winding? - Sphere floating

Will float a hollow iron ball with an outer diameter d1 = 20cm and an inside diameter d2 = 19cm in the water? The iron density is 7.8 g/cm 3. (Instructions: Calculate the average sphere density and compare with the density of the water. ) - Delayed clock

Michael put a new battery into his watch at midnight. However, they are 5 seconds late each minute. How many hours does the watch show in 24 hours? - Iceberg

What is the surface area of 50 cm iceberg (in the shape of a cuboid) that can carry a man with luggage with a total weight of 120 kg? - Banknotes

How many different ways can the cashier payout € 310 if he uses only 50 and 20 euro banknotes? Find all solutions. - Concentric circles

There is given a circle K with a radius r = 8 cm. How large must a radius have a smaller concentric circle that divides the circle K into two parts with the same area? - Number of songs

Write an expression for the number of songs they need for this show. Evan and Peter have a radio show that has 2 parts. They need 4 fewer than 11 songs in the first part. In the second part, they need 5 fewer than 3 times the number of songs in the first p

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