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dimaraw [331]
2 years ago
6

A rock weighs 80 g on a triple beam scale. The same rock is then gently placed inside a graduated cylinder containing 30 mL of w

ater. If the water level in the graduated cylinder rises to 75 mL. What is the density of the rock
Mathematics
1 answer:
Alexxandr [17]2 years ago
3 0

Answer:

  • 1.78 g/cm³

Step-by-step explanation:

<u>80 g rock displaces water:</u>

  • 75 ml - 30 ml = 45 ml = 45 cm³

<u>Density = mass / volume:</u>

  • d = 80 g / 45 cm³
  • d = 1.78 g/cm³ (rounded)
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Answer:

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Step-by-step explanation:

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gizmo_the_mogwai [7]

Answer:

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Step-by-step explanation:

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3 years ago
The scale of a model train is 1 inch to 13.5 ft. One of the cars of the model train is 5inches long. What is the length in feet
aleksklad [387]

Answer:

The length of the actual train's car is <u>67.5 feet.</u>

Step-by-step explanation:

Given:

The scale of a model train is 1 inch to 13.5 ft.

Now, to get the length of the actual car of the train.

Let the length of actual train's car be x.

And, the length of the car of model train = 5\ inches\ long.

<em>According to the scale of the model train, 1 inch is equivalent to 13.5 ft. </em>

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Now, to get the length of actual train's car using cross multiplication method:

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By cross multiplying we get:

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7 0
3 years ago
What does arc BC equal?
Dmitrij [34]

Answer:

124

Step-by-step explanation:

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Dennis_Churaev [7]

Answer:

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