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Mandarinka [93]
3 years ago
11

Adiya said that the first step to solving the quadratic equation x2 + 6 = 20x by completing the square was to divide 6 by 2, squ

are that value, and add the result to both sides. Is Adiya’s solution method correct? Explain.
Mathematics
2 answers:
maksim [4K]3 years ago
8 0

Answer:

No, it is incorrect.

Step-by-step explanation:

The quadratic equation is

x^2+6 = 20x or x^2-20x+6=0. To complete square we take the coefficient of x divided by 2, square that value and add the result to both sides. In the equation given the number to do the process is 20, not 6, then the solution method is incorect.

attashe74 [19]3 years ago
8 0

Answer:

NO it is not correct

Step-by-step explanation:

Adiya’s method is not correct. To form a perfect square trinomial, the constant must be isolated on one side of the equation. Also, the coefficient of the term with an exponent of 1 on the variable is used to find the constant in the perfect square trinomial. Adiya should first get the 20x term on the same side of the equation as x2. Then she would divide 20 by 2, square it, and add 100 to both sides.

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100 POINTS!!!!!
Oksanka [162]

Answer:

a. Ratio of their circumference = 2:3

b. The ratio of their surface areas = 2:3

c. The ratio of their volume = 4:9

Step-by-step explanation:

Let the cylinders be labelled as A and B respectively.

Diameter of cylinder A = 6 in,

its radius = \frac{diameter}{2}

                = \frac{6}{2} = 3 in

Diameter of cylinder B = 9 in,

its radius = \frac{diameter}{2}

               = \frac{9}{2}  = 4.5 in

Thus,

a. circumference of a circle = 2\pir

Circumference of cylinder A = 2\pir

                                               = 2 x \pi x 3

                                            = 6\pi in

Circumference of cylinder B = 2\pir

                                              = 2 x \pi x 4.5

                                              = 9\pi

Ratio of their circumference = \frac{circumference of cylinder A}{circumference of cylinder B}

                                               = \frac{6\pi }{9\pi }

                                               = 2:3

b. The surface area of a cylinder = 2\pirh

the surface area of cylinder A = 2\pirh

                                                  = 6\pih

the surface area of cylinder B = 2\pirh

                                                = 9\pih

The ratio of their surface areas = \frac{surface area of cylinder A}{surface area of cylinder B}

                                                 = \frac{6\pi h}{9\pi h}

                                                 = 2:3

c. Volume of a cylinder = \pir^{2}h

volume of cylinder A = \pir^{2}h

                                = \pi x 3^{2} x h

                                = 9\pih

volume of cylinder b = \pir^{2}h

                                    = \pi x 4.5^{2} x h

                                    = 20.25\pih

The ratio of their volume = \frac{volume of cylinder A}{volume of cylinder B}

                                         = \frac{9\pi h}{20.25\pi h}

                                         = 4:9

6 0
3 years ago
Please help I need it I’ll give Brainly please
Lapatulllka [165]

Answer:

35.7

Step-by-step explanation:

So to find voulme you would mutiple and we have the two number 11.9 and 3 so you would do 11.9x35.7 this equals 35.7 i hope this helps you.

3 0
3 years ago
Read 2 more answers
PLEASE HELP I AHVE LIMITED TIME
Sonbull [250]

Answer:

C

Step-by-step explanation:

the smaller one is half the size

3 0
3 years ago
Read 2 more answers
(2,-1) (2.6) on a graph​
choli [55]
For 2,1 you go over two up 1. for 2,6 go over 2 up 6. If u want to make a line then you connect the two points once you plot them
5 0
3 years ago
What is the value of x?
Hitman42 [59]
The correct answer is √313. ( square root of 313 or 17.7)
Hope this helps.
7 0
3 years ago
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