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FinnZ [79.3K]
4 years ago
9

Solve the system of equations using Gaussian elimination or Gauss-Jordan elimination. 2x + 6y = 6 3x + 9y = 9

Mathematics
1 answer:
Elan Coil [88]4 years ago
5 0
The answer is x=-3/40 :)
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The radius of a semicircle is 3 kilometres. What is the semicircle's perimeter?
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Answer:

In terms of Pi: 3\pi + 6 km

Exact value (rounded): 15.42477 km

Approximated (3.14): 15.42 km

Step-by-step explanation:

Hello!

A semicircle's perimeter can be found using the formula: P = \pi r + 2r

We can plug in the values to solve for the perimeter.

<h3>Solve</h3>
  • P = \pi r + 2r
  • P = \pi(3)+ 2(3)
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In terms of Pi, it is 3\pi + 6,

Exact value of Pi, it is 15.42477

Approximation of Pi (3.14), it is = 15.42

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Hope this helped

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A building is 509 feet tall. Each floor is about 14 feet tall. About how many floors does the building have?
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Step-by-step explanation:

A conditional statement in math is a statement in the if-then form.

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