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DaniilM [7]
3 years ago
7

Your lab develops a synthetic compound that is extremely light but very durable. You test it by making a solid ball with a radiu

s of 20.0 millimeters. Which of the following is closest to the volume of the synthetic compound ball, in cubic millimeters?
Mathematics
1 answer:
scZoUnD [109]3 years ago
5 0

Answer:

Pi x r² = 1256.63706144

Step-by-step explanation:

i'm not 100% sure this is right

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4 times a number is greater than 48
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This inequality is written as: 4x>48. the answer is x>12
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A goods train runs at the speed of 72 kmph and crosses a 250 m long platform in 26 seconds. What is the length of the goods trai
Flauer [41]

The length of the goods train is 270 meters.

Given that, a goods train runs at the speed of 72 kmph and crosses a 250 m long platform in 26 seconds.

<h3>What is the distance formula with speed and time?</h3>

Speed is defined as the rate at which an object moves from one place to another in a given interval of time. It is a scalar quantity as it defines only the magnitude not the directions of an object moving. The S.I. unit of speed is m/s.

The speed of a moving object can be calculated as Speed = Distance / Time.

Now, to convert km/h to m/sec multiply the measure by 5/18.

That is, 72 × 5/18 = 20 m/sec

Let the length of the train be x metres.

So, then (x+250) / 26 = 20

⇒x+250=520

⇒x=270 meters

Therefore, the length of the goods train is 270 meters.

To learn more about the speed visit:

brainly.com/question/7359669.

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5 0
2 years ago
11,16,21,...<br> Find the 43rd term.<br> Find the 43rd term.
RoseWind [281]

Answer:

You add 5 each time so we just need to multiple 5 by 40  since we alredy have the first three terms.

40*5=200

21+200=221

Hope This Helps!!!

8 0
2 years ago
Calculate 42kg of 105kg as a percentage
yulyashka [42]
\frac{42\,\mathrm{kg}}{105\,\mathrm{kg}} = \frac{2\cdot21}{5\cdot 21} = \frac{2}{5} = \frac{4}{10}=40\%
7 0
3 years ago
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What is 972 divided by 9
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Answer:

108

Step-by-step explanation:

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