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valina [46]
3 years ago
14

Find the number of steel ball bearings, each of diameter 0.7 cm, that can be made from 1kg of steel, given that 1cm cubed of ste

el weighs 7.8 g​
Mathematics
1 answer:
dimulka [17.4K]3 years ago
7 0

Answer:

Ball Bearing Volume = (4 / 3) * PI * radius ^3

Volume = (4 / 3) * 3.14159265 * (.35)^3

Volume = (4 / 3) * 3.14159265 * 0.042875

Volume = 0.17959438 cc

1 cc of steel = 7.8 g

Volume of 1 kg of steel = 1,000 cc / 7.8 g per cc

1 kg = 128.205 cc

Number of ball bearings we can make = 128.205 / 0.17959438

Equals 713.86

Step-by-step explanation:

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If each value of the data of the poplation function is doubled which of the following is not correct?
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Answer:

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Step-by-step explanation:

Here, we want to select what will be wrong if every number in the dataset is doubled

A. This is correct

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By doubling the numbers, we have simply doubled the sum while the count is same

So what we have as the result of the division will be 2 times what we had initially making the mean doubled

B. The mode is doubled

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D. The median is doubled

This is correct

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Since all numbers are doubled in the present case, the median to is also doubled along side as the numbers are now twice what they were evenly

C. This is wrong

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3 0
2 years ago
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