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aniked [119]
3 years ago
9

While mining, Nancy found a Large metal bar that contain 12 g of copper. Nancy also determined that the bar was 80% copper. What

was the total weight of the metal bar in grams?
Mathematics
1 answer:
Snezhnost [94]3 years ago
5 0

Answer:

  15 grams

Step-by-step explanation:

If the copper made up 80% of the weight of the bar (w), then the bar weighed ...

  0.80w = 12 g

  w = (12 g)/0.80 = 15 g

_____

Copper has a density of about 8.96 g/cm³, so Nancy's "large" metal bar is about the size of two sugar cubes.

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vladimir1956 [14]

Based on the calculations, all of the numbers belong to this arithmetic sequence.

<h3>How to calculate an arithmetic sequence?</h3>

Mathematically, the nth term of an arithmetic sequence can be calculated by using this expression:

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<u>Where:</u>

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Next, we would determine the common difference as follows:

d = a₂ - a₁

d = 105 - 99 = 6.

d = a₃ - a₂

d = 111 - 105 = 6.

d = a₄ - a₃

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Based on the calculations, all of the numbers belong to this arithmetic sequence.

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Complete Question:

What is the number that does not belong to this sequence 99, 105, 111, 117, 123, 129, 135, 141, 147, 153

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2 years ago
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False , Combining a coin toss and a roll of a die makes a simple event.

In statistics, what does a probability mean?

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A true statement is​ "For data at the interval​ level, you CAN calculate meaningful differences between data​ entries."

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brainly.com/question/11234923

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3 0
1 year ago
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valkas [14]

Answer:

F to B Your welcome :)

Step-by-step explanation:

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3 years ago
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