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andreev551 [17]
3 years ago
11

The surface area of the rectangular prism can be found using the expression 6x exponent 3 + 4x exponent 2 + 12x. if the value of

x is 3, what is the surface area, in square centimeters of the prism?
Mathematics
1 answer:
kupik [55]3 years ago
7 0

Answer:

234 cm²

Step-by-step explanation:

Given expression to represent the surface area of the rectangular prism is 6x^{3} +4x^{2} +12x

The given value of x is 3.

Now, finding value of expression by sustituting value of "x" as given.

Surface area of the rectangular prism = 6x^{3} +4x^{2} +12x

Surface area of the rectangular prism= 6\times 3^{3} +4\times 3^{2} +12\times 3

∴ Surface area of the rectangular prism= 6\times 27+ 4\times 9+ 12\times 3

Surface area of the rectangular prism= 162+36+36= 234\ cm^{2}

∴ Surface area of the rectangular prism= 234 cm²

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3 years ago
Triangle RST, with vertices R(5,-9), S(9,-5), and T(7,-4), is drawn on the coordinate grid below.
kakasveta [241]

The area of the triangle with the coordinate of the vertice will be 6 square units.

<h3>What is the triangle?</h3>

A triangle is a three-sided polygon with three angles. The angles of the triangle add up to 180 degrees.

Triangle RST, with vertices R(5,-9), S(9,-5), and T(7,-4), is drawn on the coordinate grid below.

Then the area of the triangle will be

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Area = 1/2 [{5 x -5 + 9 x -4 + 7 x -9} - {-9 x 9 + -5 x 7 + -4 x 5}]

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More about the triangle link is given below.

brainly.com/question/25813512

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7 0
2 years ago
Pls!!<br> f(x)=√x+2 and g(x)=9x−4<br> f(g(x))=<br><br> f(g(3))=<br> show work pls thank uu
Monica [59]

Answer:

  • Find f(g(x)) by substituting the entire g(x) function for x in f(x)
  • f(x)=\sqrt{x} +2\\f(g(x))=\sqrt{(9x-4)} +2 that's the answer
  • Then f(g(3)) is just putting in place of x in our new equation
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3 years ago
A train is travelling at a constant speed in ten minutes it travels 24 km work out how far it travels in 20 minutes
Elina [12.6K]
If it travels at a constant speed for twice the amount of time, the train should travel twice the distance, or 24 * 2 = 48 km.
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