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prisoha [69]
3 years ago
5

Find the circumference r = 5 cm c [?] cm c=d

Mathematics
1 answer:
ElenaW [278]3 years ago
3 0

Step-by-step explanation:

radius of circle =5 cm

circumference of a circle =2πr

=2π×5

=10π=10×3.14

circumference=31.4 cm

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Ksivusya [100]
It’s a right triangle :)
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3 years ago
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<img src="https://tex.z-dn.net/?f=-6x%5E4-3x%5E2y%5E2%20%2B%205y%5E4" id="TexFormula1" title="-6x^4-3x^2y^2 + 5y^4" alt="-6x^4-3
Mashutka [201]

Answer:

the answer to the question is 8x⁴- 5x²y² - 6y⁴  

Step-by-step explanation:

the normal way of using BODMAS is apply to all polynomial equations.

subtracting  -6x⁴- 3x²y² + 5y⁴ from 2x⁴ - 8x²y² - y⁴.

polynomial of the same degree is very easy to calculate. this equation is having the same degree of polynomial all through, therefore:

  Applying Bracket to the equation

   2x⁴ - 8x²y² - y⁴- ( -6x⁴- 3x²y² + 5y⁴)

  Open the bracket

   2x⁴ - 8x²y² - y⁴ +6x⁴+3x²y² - 5y⁴

  collects the likes terms

   2x⁴ +6x⁴- 8x²y² +3x²y² - 5y⁴  - y⁴

  The final answer is =

   8x⁴- 5x²y² - 6y⁴  

6 0
4 years ago
There are 20 marbles in a bag. Each marble has a different design or color. How many ways can you draw 8 marbles from the jar? I
Digiron [165]

Answer:

The number of ways of selecting a combination of 8 marbles from a bag containing 20 marbles is 125970

Step-by-step explanation:

The number of selecting 8 marbles from a bag of 20 marbles

A combination gives the number of possible order or arrangement in a collection of k items selected from a set of n items

C_{n,k} = \dbinom{n}{k}= \dfrac{n!}{k!\cdot \left ( n - k \right )!}

In the question, k = 8, and n = 20

Substituting the values of n and k in the above equation gives;

C_{20,8} = \dbinom{20}{8}= \dfrac{20!}{8!\times\left ( 20 - 8 \right )!} = 125,970

Therefore, the number of ways of selecting 8 marbles from a bag containing 20 marbles is given by the combination C₂₀, ₈ = 125970.

8 0
3 years ago
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The right answer for the question that is being asked and shown above is that:

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4)graph of linear inequality => <span>F)half-plane </span>
5)slope of a horizontal line => <span>C)0 </span>
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