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Liula [17]
3 years ago
15

If 25 cm' of a quantity of marbles has a mass of 45 g, calculate the density of the marble in kg/m​

Mathematics
1 answer:
Elena-2011 [213]3 years ago
7 0

The density of the marble will be "0.18 kg/m³".

According to the question,

Volume of marbles,

  • V = 25 cm³

By converting it into m, we get

  • 0.25 m³

Mass,

  • M = 45 g

By converting it into kg, we get

  • 0.045 kg

As we know, the formula:

→ Density = \frac{Mass}{Volume}

By substituting the values, we get

→               = \frac{0.045}{0.25}

→               = 0.18 \ kg/m^3  

Thus the answer above is correct.

Learn more about density here:

brainly.com/question/15553857

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Two shapes with equal perimeter are pictured below.
Radda [10]

Answer:

Measure of CD = 17 units

Step-by-step explanation:

Perimeter of a polygon = Sum of measures of all sides of the polygon

Perimeter of the given rectangle = 2(length + width)

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                                                       = 2(3x + 2) units

Perimeter of triangle EFG = EF + FG + GE

                                           = (x - 7) + (4x - 8) + (3x + 1)

                                           = (8x - 14)

                                           = 2(4x - 7) units

Since, perimeters of both the figures are equal,

2(3x + 2) = 2(4x - 7)

3x + 2 = 4x - 7

4x - 3x = 7 + 2

x = 9

Measure of CD = (2x - 1)

                         = 2(9) - 1

                         = 17 units

6 0
3 years ago
What percent of 9.2 m is 2.5
Nadusha1986 [10]
To solve this, you just simply divide to get a decimal and then convert to a percentage.

2.5 divided by 9.2 is equal to approximately 0.2717.

You then multiply that by one hundred to get a percentage. So the final answer is approximately 27.17%.
7 0
3 years ago
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Andreas93 [3]

Answer:

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3 0
3 years ago
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When 5√20 is written in simplest radical form , the result is k√5 what is the value of K
Vladimir [108]

Answer:

Step-by-step explanation:

√20 can be rewritten as the product of two radicals:  √4√5,

and √4 = 2.

Thus, 5√20 = 5(2)√5 = 10√5.  Thus, B:  10 is correct; k = 10.

7 0
3 years ago
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wariber [46]

Answer:

2160

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