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Oksana_A [137]
3 years ago
5

The diagram shows a regular pentagon with centre O.Work out the size of angle x.​

Mathematics
1 answer:
Vinil7 [7]3 years ago
6 0

Answer:

54

Step-by-step explanation:

Each vertex of the pentagon has an angle of 108 degrees. So, x = 108/2 = 54

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Prove the polynomial identity.
Ronch [10]

Answer:

The answer to your question is: 2, 4, 5, 1 , 3

Step-by-step explanation:

The first line is the second

                                             (3x² - 6)² - (3x²)² = 36(1 - x)(1 + 1)

The second line is the forth

                                             9x⁴ - 36x² + 36x² - 9x⁴ = 36(1 - x)(1 + x)

The next line is the fifth

                                             36 - 36x² = 36(1 - x)(1 + x)

The next line is the first

                                             36(1 - x²) = 36(1 - x)(1 + x)

The last line is the third

                                             36(1 - x)(1 + x) = 36(1 - x)(1 + x)

3 0
3 years ago
Read 2 more answers
Prove that 1/sec0-tan0= sec0+tan0
Leviafan [203]

Answer:

Step-by-step explanation:

\text{LHS}=\frac{1}{\sec \theta-\tan \theta}\\=\frac{\sec \theta+\tan \theta}{(\sec \theta-\tan \theta)(\sec \theta+\tan \theta)}\\=\frac{\sec \theta+\tan \theta}{\sec^{2} \theta-\tan^{2} \theta}\\=\frac{\sec \theta+\tan \theta}{1}\\=\sec \theta+\tan \theta\\=\text{RHS}

7 0
2 years ago
So if you need 30 bags but you can buy 200 bags for 6.19 how much does it cost for 1 bag?​
maw [93]

Answer:

0.03095

Step-by-step explanation:

         0.03095

200   6.19000

        -600

           1900

          -1800

             1000

            -1000

             0

4 0
2 years ago
Denise buys flour in bulk for her bakery. The cost per pound of flour is graphed below. Which BEST describes the function of the
bonufazy [111]
Based from the graph, I think the answer is D. a piece-wise function with separate pieces of linear and step-functions. This is because as you can see from the graph, for intervals [0,1], [5,6], and [10,11] the function is linear. On the other hand, for the remaining intervals, it has a constant value which can be described as a step function. 
8 0
3 years ago
Karla has spent $42 on food. She bought milk, cheese, and meat. The milk cost half as much as the cheese and the meat cost four
Alina [70]

M = milk

C= cheese

X=meat

milk = 0.5c

meat = 4c

cheese = 1c

<span>4 +0.5 = 1c  = 5.5c</span>

 

C= 42/5.5 = 7.64

X = 7.64 x 4 = 30.56

M =7.64 * 0.5 = 4.67

 

30.56 + 3.82 + 7.64 = approximately $42



4 0
3 years ago
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