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Kobotan [32]
2 years ago
13

Helllohello help please if you want -

Mathematics
1 answer:
uranmaximum [27]2 years ago
6 0

3(7d + 4e) = 3 • 7d + 3 • 4e = <u>21d</u><u> </u><u>+</u><u> </u><u>12e</u>

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Alexis bought a pyramid-like paperweight for her teacher. The paperweight has a volume of 200 cm3 and a density of 1.5 grams per
Nikolay [14]

Answer:

The density is equal to the weight divided by the volume:

\rho=\dfrac{W}{V}

The paperweight weights 300 grams.

Step-by-step explanation:

The density of the paperweight can be calculated knowing the weight and the volume of this paperweight.

The density is equal to the weight divided by the volume:

\rho=\dfrac{W}{V}

We know that the density of this paperweight is 1.5 grams per cm3, and its volume is 200 cm3.

We can use the formula of the density to calculate the weight:

\rho=\dfrac{W}{V}\\\\\\W=\rho\cdot V=1.5\;\dfrac{g}{cm^3}\,\cdot\;200\; cm^3\\\\\\W=300\;g

The paperweight weights 300 grams.

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Step-by-step explanation:

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3 years ago
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So the answer is 9

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kicyunya [14]

Answer:9


Step-by-step explanation:

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Which matrix represents the solution to this system of equations?
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