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Dovator [93]
3 years ago
9

Twice a number added to six results in thirsty

Mathematics
1 answer:
horsena [70]3 years ago
7 0

Answer: 6+2n=30

Step-by-step explanation:

Since you did not say what you need to do, I will assume that you need to write an equation.

In order to solve this exercise it is important to remember the following:

1. The word "Twice" indicates you must multiply by 2.

2. The word "result" indicates an equal sign = .

Then, based on the explained above, you know that "Twice a number" can be represented with the following expression:

2n

Where "n" is the number mentioned.

Then, you know that "Twice a number added to six" can be expressed as following:

6+2n

 Therefore, you can conclude that "Twice a number added to six results in thirsty" can be represented with the following equation:

6+2n=30

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Find the value of Q. No links plz.
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Step-by-step explanation:

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If 4 times the sum of a number and 3 is six less than twice the number, what is the number?
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Sally finds a coin with a radius of 1.5 centimeters and a thickness of 0.25 cm. It has a measured mass of 18.54 grams. How can S
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Answer:

Silver

Step-by-step explanation:

Find the volume of the coin

<u>Volume of a cylinder</u>

\textsf{V}=\sf \pi r^2 h \quad\textsf{(where r is the radius and h is the height)}

Given:

  • r = 1.5 cm
  • h = 0.25 cm

Substituting given values into the formula to find the volume:

\sf \implies V=\pi (1.5)^2(0.25)

\sf \implies V=0.5625 \pi \:cm^3

Find the density of the coin given it has a measured mass of 18.54 g

<u>Density formula</u>

\sf \rho=\dfrac{m}{V}

where:

  • \rho = density
  • m = mass
  • V = volume

Given:

  • m = 18.54 g
  • \sf V=0.5625 \pi \:cm^3

Substituting given values into the density formula:

\implies \sf \rho=\dfrac{18.54}{0.5625 \pi}

\implies \sf \rho=10.49149385\:g\:cm^{-3}

Given:

  • \textsf{Density of Lead}=\sf 11.3\:g\:cm^{-3}
  • \textsf{Density of Silver}=\sf 10.49\:g\:cm^{-3}

Therefore, as \sf \rho=10.49\:g\:cm^{-3} the coin is made from silver.

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