If there is a sample of pennies that has a mass of 857.2 g. What is the average mass of a penny that is 2.73 g. How many pennies are in the sample?
after you get the answer you would have to(round up to the nearest whole number)
16 years ago
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1 year ago
To find the average mass of a penny, divide the total mass of the sample by the mass of each penny.
Average mass of a penny = Total mass of the sample / Mass of each penny
Average mass of a penny = 857.2 g / 2.73 g
Calculating the average mass of a penny:
Average mass of a penny = 314.56
Rounding up to the nearest whole number gives an average mass of 315 g per penny.
To calculate the number of pennies in the sample, divide the total mass of the sample by the average mass of a penny.
Number of pennies = Total mass of the sample / Average mass of a penny
Number of pennies = 857.2 g / 315 g
Calculating the number of pennies in the sample:
Number of pennies = 2.7253968253968253
Rounding up to the nearest whole number, there are approximately 3 pennies in the sample.
11 months ago
To find the average mass of a penny and the number of pennies in the sample, we can use the formula:
Average mass = Total mass / Number of pennies
Given that the total mass of the sample is 857.2 g and the mass of a single penny is 2.73 g, we can rearrange the formula to solve for the number of pennies:
Number of pennies = Total mass / Mass of a single penny
Now let's calculate the average mass and the number of pennies step by step:
1. Average mass:
Average mass = Total mass / Number of pennies
Average mass = 857.2 g / 2.73 g
Calculating the division: Average mass ≈ 314.628 g/penny
2. Number of pennies:
Number of pennies = Total mass / Mass of a single penny
Number of pennies = 857.2 g / 2.73 g
Calculating the division: Number of pennies ≈ 314.263
Since we need to round up to the nearest whole number, the number of pennies in the sample is 315.
Therefore, the average mass of a penny is approximately 314.628 g, and there are 315 pennies in the sample.