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prisoha [69]
3 years ago
14

The perimeter of triangle ABC is 36 cm. Its sides are proportional to the numbers 3, 4 and 5. Find the sides of the triangle.

Mathematics
1 answer:
DiKsa [7]3 years ago
5 0

Answer:

3x+4x+5x=36

12x=36

x=36/12

x=3

3x=3 into 3=9

4x=4 into 3=12

5x=5 into 3=15

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S_{100}=\dfrac{(2)(1)+(100-1)(1.5)}{2}\cdot100=\dfrac{2+(99)(1.5)}{1}\cdot50\\\\=(2+148.5)\cdot50=150.5\cdot50=7,525\\\\\boxed{S_{100}=7,525}\\\\Answer:\\the\ common\ difference:\ d=1.5\\the\ fifth\ term:\ a_5=7\\the\ sum\ of\ first\ 100\ terms:\ S_{100}=7,525

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3 years ago
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Answer:

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Step-by-step explanation:

The formula of a volume of a square pyramid:

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3 years ago
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